Thèses sur le sujet « Waste minimization South Australia »

Bibliography: leaves 123-130. The literature search and the findings from the investigation have been used to provide recommendations for a sector specific cooperative approach using regulation, self-regulation, voluntary agreements, economic incentatives and educational/information strategies to promote and acheive cleaner production in the South Australian foundry industry.

Communities around the globe are confronted by environmental challenges such as waste management. These challenges are further aggravated by factors such the increasing volumes of waste, landfills that are running out of capacity and scarcity of suitable land to construct new landfill sites. The National Waste Management Strategy requires participation from all members of society including households, businesses, community organisations, nongovernmental organisations, parastatals and the three spheres of government, to promote practices that minimise the volumes of waste generated. The purpose of the research was to assess and investigate the current waste management practices at the Cape Peninsula University of Technology (CPUT), and recommend a waste management system. The research employed a quantitative approach, where participants were asked to complete a survey questionnaire. A literature review was conducted on waste management at higher learning institutions, with particular focus on the contribution that a university can make in alleviating some of the adverse effects of waste management. The outcome of the review highlighted some of the opportunities and barriers that can either disrupt or augment the process of implementing a waste management system. The results from the research revealed that CPUT does not conform to the hierarchy of waste management, and there is no waste management policy in place. The effect of this is that the stakeholders were not satisfied with the lack of leadership on waste related challenges. By developing a policy, providing leadership, conducting awareness campaigns and prioritising environmental challenges such responsible management waste, could improve the image of the institution in the eyes if its stakeholders.

The essentiality for waste reduction in society is prompted by the depletion of natural resources. Internationally, five waste management strategies have been identified, namely reduction of waste (waste prevention), re-use of waste, recycling of waste, recovery of energy and disposal to landfill. In Polokwane Declaration of September 2001, South Africa’s Department of Environmental Affairs and Tourism committed itself to achieve a 50 percent reduction in the volume of waste generated by 2012 and to be landfilled and have a zero waste plan implemented by 2022. Through the National Waste Management Act, No. 59 of 2008, the South African government also committed itself to provide protection of health, well-being and the environment through measures to avoid and minimise the generation of waste. Even though several policies and legislative documents are available that address waste minimisation and recycling, individual community members are however still reluctant to participate in these activities. This study therefore investigated the current levels of understanding, education and commitment to recycling and waste minimisation in a selected South African community. The target respondents of the study were members of a local church who are representative of the various peoples that reside in the communities serviced by the selected municipality. A convenience sample of 70 participants from that church was selected to complete the questionnaires. Seventy (70) questionnaires were distributed, and all 70 questionnaires were returned. Interviews were also conducted with two managers from the Waste Management Department of the selected municipality. The data analyses conducted, included descriptive statistics and content analysis of the interview transcripts. The empirical results revealed among others that: (1) recycling removal service is limited to pre-selected recyclables; (2) the municipality contributes to local entrepreneurial opportunities; (3) public participation is a pre-requisite in the success of the programmes; (4) participation is determined by convenience; (5) enforcement of legislation assists with compliance; (6) environmental sustainability is supported by environmental concerned consumers; (7) mismatch of opinions around separation at source of generation and (8) continuous education is instrumental in waste management. The main recommendations of the study include: (1) municipalities need to provide exciting and innovative recycling and waste minimisation programmes, continuously; (2) positive attitude and behaviour of all the stakeholders determines the success of waste minimisation and recycling; and (3) society, industry and government need to join forces in ensuring success in waste management. By implementing these recommendations, stakeholders in this field of interest will go a long way in improving waste management in South Africa communities.

Thesis (MSc)--Stellenbosch University, 2005.
ENGLISH ABSTRACT: There is increasing pressure on factories and government to practise cleaner technology. The public is becoming more and more environmentally aware and external pressure from international competitors is also forcing companies to adopt environmentally sound production practices. Our natural resources and the environment need environmentally friendly practices. Waste minimisation is not only prudent practice for manufacturing industries, but is also an integral part of environmental regulations in many countries, including South Africa. This research seeks to investigate the extent and potential for industrial waste minimisation in Stellenbosch. The objectives of this thesis are, firstly to establish and evaluate the present range and extent of industrial solid waste minimisation practices; secondly to identify and evaluate potential industrial solid waste minimisation measures that could (if necessary) be instituted in future; and finally to propose a general strategy for the minimisation of industrial solid waste in Stellenbosch. The findings reflect that currently there is little waste minimisation awareness and practice in Stellenbosch. The most common method of waste minimisation currently practised by industries is recycling through the selling of recyclables. The least common method is the equipment-related change method, due to the high costs involved in adopting this method. Based on the findings, a suitable regional waste management strategy was developed and this strategy could possibly be adopted elsewhere in South Africa. Key words: waste minimisation, waste management, re-use, recycling, factory, environment, practice, participation, cleaner technology, awareness, Stellenbosch
AFRIKAANSE OPSOMMING: Daar is toenemende druk op fabrieke sowel as op die regering om skoner tegnologie te beoefen. Die publiek raak ook toenemend meer omgewingsbewus en druk vanaf die kant van internasionale mededingers forseer maatskappye om praktyke in te stel wat gunstig is ten optigte van die omgewing. Ons natuurlike hulpbronne en die omgewing benodig omgewingsvriendelike vervaardigingspraktyke. Die beperking van afvalstowwe is nie net vir die fabriekswese 'n wyse praktyk nie, maar maak ook in vele lande, met inbegrip van Suid-Afrika, 'n integrale deel uit van regulasies met betrekking tot die omgewing. Hierdie navorsingsprojek poog om die omvang en potensiaal van beperking van afvalstowwe in Stellenbosch te ondersoek. Die doelwitte van die ondersoek is eertens om ondersoek in te stel na die huidige reikwydte en omvang van praktyke om vaste industriële afvalstowwe te beperk en dit te evalueer; tweedens om potensiële industriële vaste afvalstofbeperkingsmaatreëls wat, indien nodig, in die toekoms ingestel sou kon word, te indentifiseer en te evalueer; en dan uiteindelik 'n algemene strategie vir die beperking van vaste industriële afvalstowwe in Stellenbosch voor te stel. Die bevindings in hierdie tesis bewys dat daar tans gennge bewustheid van die noodaaklikheid van afvalstofbeperking in Stellenbosch is en dat dit ewe min in die praktyk toegepas word. Die mees algemene vorm van beperking van afvalstowwe in die fabriekswese is deur middel van verkoop van herwinbare afvalstowwe. Die mins algemene vorm van beperking van afvalstowwe hou verband met die vervanging van toerusting. Die rede hiervoor het te doen met die koste verbonde aan die strategie. Vanuit hierdie bevindings is toepaslike strategie vir die bestuur van afvalstowwe op streeksvlak ontwikkel. Hierdie strategie sou moontlik ook elders in Suid-Afrika toegepas kon word. Sleutelwoorde: beperking van afvalstowwe, afvalstofbestuur, hergebruik, herwinning, fabriek, omgewing, praktyk, deelname, skoner tegnologie, bewustheid, Stellenbosch

Thesis (MDF)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: Johannesburg generates in excess of 1 500 000 tonnes of general waste annually and has on average 10 years’ lifespan remaining on its four landfill sites. As a signatory to the Polokwane Declaration, the City of Johannesburg has recognised the need for new interventions to divert waste from landfills by various methods, such as separation at source; alternative treatment methods and the conversion of waste to energy. Progress has, however, been slow and this research aims to investigate alternative waste management techniques that can be applied in the City of Johannesburg to fast track the realisation of these targets. Using scenario planning techniques, the research considers implications for policy and management decisions in realising the best possible future in the area of waste management in Johannesburg. The scenario process was used to develop the following scenarios for waste management in Johannesburg: Long walk to freedom. Waste collection coverage includes pockets of the community where waste collections services are less than optimal. The residents of the city, particularly in these underserviced areas, are also not very knowledgeable of the impact that the waste generated within their communities can have on the environment and what alternatives there are to manage this. Pick it up. The City provides full services to a society that functions in relative oblivion of the implications of their behaviour on the environment. It is assumed to be the role of government to “pick up” after communities and dispose of waste. This scenario is oblivious of the waste hierarchy and the role communities could play in minimising waste. Wishing on a star. The city continues to have under-serviced areas, public awareness is high and this fuels correct behaviour and a mind-set shift with regard to waste management. Working together we can do more. The City optimises its service provision to cover all areas while also ensuring maximum public awareness and behaviour change with regard to waste management.

Companies are constantly expected to be more competitive while working in an environment in which time and cost are limited, thereby preventing such companies from taking the time required to be responsive. It is, therefore, important that companies understand that conventional knowledge and methods will not serve unless there is a concerted focus on improvement of organisational performance toward fulfilling increased expectations, not just maintaining that which is comfortable. A more sustainable approach may be the introduction of lean manufacturing techniques. The lean manufacturing process is one that continuously strives to eliminate waste, thereby increasing the percentage of time that may be devoted to value-adding activities. Lean manufacturing principles were applied in the Can Coating Plant of Duco Speciality Coatings. This study was intended to identify waste in the current production process in the Can Coating Plant and then to use lean tools and principles to eliminate such waste. Implementation of these lean tools proved to result in a leaner and more value-adding process. The new process rendered a positive result on Duco Coating’s costs, quality and product performance. Recommendations on further improvements were also offered.

Thesis (MSc)--Stellenbosch University, 2002.
ENGLISH ABSTRACT: As the world enters a new millennium, global awareness of environmental issues have reached new heights. No longer is the environment seen as an all-absorbing and allproviding resource. Rather, there exists a greater awareness that without active management, the inherent risks and hazards - posed by both the natural environment and humankind's interaction with this environment - will be realised. In order to ensure a sustainable co-existence, humanity's interaction with the surrounding. environment must be managed in a responsible manner. In this regard, all aspects of this interaction require attention. Various frameworks, manifested in a variety of forms, have been proposed. One of the most basic aspects of species existence is the generation of waste. Human existence is no different. However, as a result of the variety of activities that characterise humans' existence on Earth, the generation of waste represents the most tangible and probably the most threatening aspect of this interaction. This study focuses on waste management from an environmental perspective at a specific institution, namely the University of Stellenbosch. In terms of its findings, the study has established the applicability of various regulatory and institutional frameworks within which the University operate. These frameworks address the role of the University both in terms of waste management and sustainable development. It has established the types of waste generated, the generating processes, the storage, and removal and disposal characteristics of waste management at the University. Waste management at the University is determined to be complex and fragmented, the result of a variety of activities occurring. It has established that limited waste minimisation and reduction activities occur, even though the University had identified effective and efficient resource use as a strategic priority. Although attempts at improving waste management are admittedly underway, the study has found that adopting an environmental management system approach to waste management will enable the University to meet pending legislative and institutional environmental commitments.
AFRIKAANSE OPSOMMING: Met die binnetree van 'n nuwe millennium het wêreldwye bewustheid van omgewingskwessies nuwe hoogtes bereik. Die omgewing word nie meer bloot beskou as 'n alles-absorberende en alles-voorsienende hulpbron nie. Veel eerder groei bewustheid van die noodsaak vir aktiewe bestuursingryping om die gevare en bedreigings inherent aan die natuurlike omgewing, en die mens se interaksie daarmee, die hoof te bied. Ter wille van volhoubare saambestaan moet die mens-omgewing interaksie op verantwoordelike wyse bestuur word. Alle aspekte van hierdie interaksie vereis aandag en 'n verskeidenheid raamwerke in 'n verskeidenheid formate is hiervoor voorgestel. Die produksie van afval is een van die mees basiese kenmerke van lewensbestaan. Menslike bestaan is nie daarbo verhewe nie. Weens die verskeidenheid aktiwiteite wat menslike bestaan kenmerk, is die produksie van afval die mees tasbare en waarskynlik mees bedreigende manifestasie van mens-omgewing interaksie. Hierdie tesis fokus op afvalbestuur uit die invalshoek van die omgewing, soos dit beslag kry aan 'n spesifieke instansie, naamlik die Universiteit van Stellenbosch. Die studie het ten aanvang die implikasies van die verskeidenheid regulatoriese en institusionele raamwerke waarin die universiteit opereer, bevestig. Hierdie raamwerke omvat die rol van die Universiteit beide in terme van afvalbestuur en volhoubare ontwikkeling. Die tipes afval wat aan die instansie gegenereer word is geklassifiseer en die genererings-, opbergings-, verwyderings- en verwerkingsprosesse en verantwoordelikhede is vasgestel en gedokumenteer. Afvalbestuur aan die Universiteit blyk kompleks en gefragmenteerd te wees, hoofsaaklik as gevolg van die wye verskeidenheid afval-skeppingsbronne wat hier aangetref word. Ook is bevind dat, ten spyte van die instansie se identifisering van effektiewe hulpbrongebruik as 'n strategiese prioriteit, slegs beperkte afval-inkorting en -reduksie aan die instansie plaasvind. Hoewel daar tans 'n aktiewe proses geloods word om afvalbestuur te verbeter, beveel die studie die aanvaarding, ontwerp en implementering van 'n veel meer wydlopende en holistiese benadering in die vorm van 'n geïntegreerde omgewingsbestuurstelsel aan. Slegs hierdeur sal die Universiteit in staat wees om aan die volgende vlaag wetgewing rakende afvalbestuur te voldoen en ook verantwoordelike omgewingsverbintenis te demonstreer.

South Africa is confronted by waste management challenges and the need to redress environmentally acceptable waste management practices. In seeking to address this challenge, the South African government has introduced waste management legislation, policies and strategies. Despite the legislation, policies and strategies on waste management, illegal waste dumping continues to exist as a major challenge in particular for the Nelson Mandela Bay Municipality. This study focuses on illegal waste dumping in Nelson Mandela Bay Municipality which negatively impacts on development. The study seeks to make recommendations which will assist the Nelson Mandela Bay Municipality to improve its waste management services. This study involved a community participatory approach by communities in Motherwell, New Brighton and Gelvandale. The research follows a mixed method approach, employing both qualitative and quantitative approach. A Public Perception Survey is used as a method of data collection aimed at determining the present public opinions regarding the waste management services currently offered by the Nelson Mandela Bay Municipality (NMBM). The study found that despite interventions by the NMBM to address illegal dumping, the problem continues to exist. Poor service provision by the NMBM in terms of waste collection services combined with the lack of awareness of the community‟s responsibility towards the cleanliness of its communities leads to littering and illegal dumping of waste by communities. The NMBM is not effective in the planning, coordination and implementation of its waste management services. Recommendations have been presented with regard to how effective waste management services in NMBM can be enhanced.

Thesis (MPhil)--Stellenbosch University, 2012.
ENGLISH ABSTRACT: Organisations are beginning to take responsibility for the impacts made by their operations/activities on the environment. The sustainability of organisations can not only be measured by their economic performance, but also by their social and environmental performance. Good governance as recommended in the King III report (Institute of directors in South Africa, 2009) requires reporting to be integrated with the organisation’s social and environmental performance. Organisations inevitably use natural resources and generate waste. Agenda 21 states that organisations should use natural resources efficiently (UNCED, 1992). The challenge according to UNDP (1998:1) is not to stop growth, but to “change the patterns of consumption and production, using new technologies to achieve greater efficiency and reduce waste and pollution”. Waste management is not only an internal concern for the Council for Scientific and Industrial Research (CSIR), but also for the national and international institutions. In South Africa, waste management previously only involved the disposal of waste aspects of it; leaving out important components of waste management such as its treatment and the principles of waste reduction, reuse and recycling. South Africa has in the past ten years changed and has instead developed sustainability plans. For example, The Polokwane Declaration on waste management outlines what the government, civil society and the business community will do to ensure the reduction of waste generation and disposal (South Africa, 2001). The National Environmental Management: Waste Act (Act 59 of 2008) states that waste must be reduced, reused, recycled and treated before it is disposed. To this effect, South African municipalities are trying to identify ways to ensure that residents and industry adhere to these requirements. The CSIR is a scientific and technological research, development and implementation organisation which has a long-standing commitment to environmental protection. It has been accredited for adherence with ISO14001 Environmental Management System requirements for over ten years. Development of the Zero-Waste to Landfill Framework builds on the strengths of the organisation’s Environmental Management System and enhances sustainable practices throughout the organisation; and also responds to national imperatives such as the Polokwane Declaration. Typical waste streams generated at the CSIR sites include general business waste (paper, cans, plastics, glass etc), general industrial waste (oils, greases, metals, plastics etc), and hazardous waste (chemical, laboratory, bio hazardous). The Zero-Waste to Landfill Framework assists, and gives guidance to the organisation in order to achieve Zero-Waste to Landfill. It informs the CSIR in planning for initiatives and systems that need to be in place in order to achieve the Zero-Waste to Landfill goal. The framework is developed to provide sustainable solutions for waste management which result in economic, social and environmental benefits for an organisation such as the CSIR. This research was done to look into the factors that ensure that an effective waste minimisation process and programme is implemented at the CSIR, and the recommendations are that; a) The CSIR participates in sustainability reporting. b) The CSIR implements green procurement. c) The CSIR explores different innovative methods, technologies and materials that can be used to minimise waste. d) The CSIR runs intensive awareness raising campaigns.
AFRIKAANSE OPSOMMING: Dit blyk dat sekere Suid-Afrikaanse organisasies uiteindelik besig is om verantwoordelikheid te neem ten opsigte van die impak wat hul produksieprosesse op die omgewing het. Die volhoubaarheid van organisasies word nie net deur ekonomies uitsette gemeet nie, maar sluit ook die monitoring van organisatories-ekonomiese in. Effektiewe bestuur soos aanbeveel deur die King III verslag (Institute of directors in South Africa, 2009) vereis dat organisatoriese rapportering sosiale en omgewingsuitsette insluit. Dit is onafwendbaar dat organisasies natuurlike bronne sal gebruik en afval daardeur genereer. Agenda 21 (UNCED, 1992) vereis egter dat organisasies natuurlike hulpbronne op ‘n effektiewe en verantwoordelike manier sal gebruik. Volgens die UNDP (1998:1) is die uitdaging aan organisasies nie om vooruitgang te stuit nie, maar “to change the patterns of consumption and production, using new technologies to achieve greater efficiency and reduce waste and pollution”. Effektiewe afvalbestuur is nie net van toepassing op die “Council of Scientific and Industrial Research (CSIR) nie, maar geld ook vir ander nasionale organisasies. In die verlede was afvalbestuurmetodes in Suid-Afrika hoofsaaklik gemik op die wegdoening van afval, terwyl metodes soos hergebruik, afvalvermindering en herwinning nie eers oorweeg is nie. Suid-Afrika het gedurende die afgelope tien jaar vooruitgang gemaak op hierdie terrein deur planne te ontwikkel wat volhoubaarheid sal bewerkstellig, byvoorbeeld the Polokwane Verklaring insake Afvalbestuur wat bepaal watter metodes die regering, gemeenskap en besigheidsgemeenskap sal implementeer om die vermindering en wegdoening van vaste afval te verseker. Die “National Environmental Management Waste Act” van 2008 vereis dat metodes vir die vermindering, hergebruik en herwinning oorweeg moet word alvorens blote wegdoening plaasvind. Die munisipaliteite in Suid-Afrika is tans besig om maniere te identifiseer wat sal verseker dat inwoners en industrieë hierdie vereistes nakom. The CSIR is gemik op tegnologiese navorsing, ontwikkeling en implementering en het ‘n langtermyn verbintenis om die omgewing te beskerm. Dit het die afgelope tien jaar die ISO 14 001 akkreditasie bekom en behou. Die ontwikkeling van die “Zero-waste to landfill”-Beleid bou op die positiewe aspek van die Organisasie se omgewingsbestuursisteem en bevorder volhoubare praktyke regdeur die Organisasie. Die Beleid spreek ook tot nasionale imperatiewe soos die Polokwane Verklaring. Die CSIR genereer afvalstrome ten opsigte van algemene kantoorafval (papier, blikkies, plastiek, glas, ens.), industriele afval (olie, ghries, metale, plastiek, ens.), sowel as gevaarlike afvalstowwe afkomstig van laboratoriums wat chemikalieë en biologies-gevaarlike materiaal insluit. Die “Zero-waste to Landfill”-Beleid fasiliteer en gee gestalte aan die Organisasie om hierdie doelwitte in die praktyk te bereik deur die ontwikkeling van inisiatiewe en sisteme. Die Beleid is ontwikkel met die doel om volhoubare oplossings te verskaf aan ‘n Organisasie soos die CSIR wat uiteindelik ekonomiese, sosiale en omgewingsvoordele sal inhou. Hierdie navorsing is gedoen om faktore wat die suksesvolle implementering van effektiewe afvalverminderings prosesse en programme by die CSIR beinvloed te ondersoek. Die aanbevelings sluit die volgende in: a) Die CSIR moet betrokke wees by volhoubare rapporteringsmetodes. b) Die CSIR moet aankoopmetodes implementeer wat volhoubaarheid ondersteun. c) Die CSIR moet verskeie innoverende metodes, tegnologie en materiale ondersoek wat gebruik kan word om die generering van afval te minimaliseer. d) Die CSIR moet intensiewe bewusmakingsveldtogte van stapel stuur.

Thesis (MTech (Public Management))--Cape Peninsula University of Technology, 2017.
The communities of Khayelitsha face problems with regard to managing waste. Increase on the generation of solid waste in the households by the members of the community; far exceed the townships’ ability and capability for safe disposal. Littering in the township is also a persistent problem, despite various clean–up and anti-litter promotional campaigns and programs introduced by local government, private organizations and other community interest groups. The persistent problem of litter and mismanagement of solid waste in the household should be addressed. The rationale and assumption underpinning this study was that waste management problems are related to social norms and attitude of the people of Khayelitsha. To investigate this phenomenon, the study adopted a qualitative paradigm. 300 heads of household residing in Khayelitsha for more than 5 years were surveyed, and door to door interview questions were conducted in 2016 June. Data from the questionnaire were analysed using Thematic and coding analysis. NVivo software was used to generate frequency tables. The responses to most interview questions were consistent for all categories of respondents and did not vary according to respondents’ background, such as gender, location household size or education. The study showed that social norms and attitudes towards waste minimisation in Khayelitsha are related to the entire waste management operation, and householders in Khayelitsha think similarly. To improve waste management in Khayelitsha the following are recommended: • Government and business need to consider incentives to minimise waste; • Government needs to improve waste management service facilities and build recycling centre which are accessible to the community; and • Government and non-governmental organizations and community members should consider awareness, education and training programs on waste wise management.

Thesis (MPhil)--Stellenbosch University, 2012.
ENGLISH ABSTRACT: Mounting pressure on waste management has forced the City of Cape Town (CCT) to progressively move towards achieving an integrated waste management system (IWMS). This system presents a holistic approach of dealing with waste issues. The waste management hierarchy indicates that the ‘cradle-to-cradle’ approach of waste management is more ideal as compared to the traditional ‘cradle-to-grave’ approaches of waste management, example landfilling. However the challenges that have transpired in the rollout of waste minimisation initiatives highlight the need to continuously improve the system. This thesis investigates the municipal solid waste (MSW) minimisation programmes initiated by the CCT Solid Waste Management Department. A systems approach that combined both quantitative and qualitative methodologies was employed in the analysis. A material flow analysis (MFA) model was used to trace the flow of waste through the waste management system. The benefit of applying the MFA approach for waste management problems has been highlighted in literature in terms of identifying potential recycling, and other, waste-treatment technologies, and predicting the outcomes of waste treatment and disposal initiatives. The main objective of this study was to apply an adapted MFA method in order to determine the progress of the existing waste minimisation programmes and to also determine the opportunities to utilise biodegradable and other recyclable components of the waste streams; thereby improving the IWMS of the CCT. The MFA provided a conceptual understanding of the flow of waste materials in the CCT. The mass assessment of waste minimisation facilities, such as the Bellville compost plant and Athlone material recovery facility and refuse transfer station, unveiled that there is still a large amount of biodegradable and recyclable municipal solid waste that ends up in landfills regardless of the waste minimisation facilities available. However, it is still immature at this stage to conclude the success of the Think Twice campaign, since this is a fairly new initiative that relies on the response rate of the public. There are challenges associated with the recyclable waste recovery rates such as public awareness, proper advertising, operational problems that still need to be addressed. The MFA results also showed the final sinks of the different waste types that are sent through the different waste minimisation facilities run by the CCT. The current institutional arrangements and legislative environment have been greatly improved but there are still a number of challenges that need to be addressed. The largest, overall challenge is devising a practical plan of ‘closing the loop’ in order to develop a circular economy. The concept of ‘cradle-to-cradle’ seems to be premised on extended producer responsibility and other stringent control mechanisms, which are currently believed, will yield negative consequences in the South African context. A lot more work needs to be done to achieve a genuinely integrated and sustainable solid waste management system.
AFRIKAANSE OPSOMMING: Die Stad Kaapstad streef na ‘n geïntegreerde afval beheer sisteem (GABS) as gevolg van toenemende druk op die bestuur van afval. Hierdie stelsel bied 'n holistiese benadering tot die hantering van afval-probleme. Die afvalbestuur-klassifikasie wys dat die “wieg-tot-wieg” benadering meer ideaal is as die tradisionele “wieg-tot-graf” benaderings van afvalbestuur, byvoorbeeld die bestaande sorteringsterreine. Die uitdagings wat voor-gekom het in die bekendstelling van afvalbeperkingsinisiatiewe het getoon dat daar ‘n voortdurende behoefte is om die stelsel te verbeter. Hierdie tesis ondersoek die munisipale vaste-afvalbeperkingsprogamme wat deur die Stad Kaapstad se Departement Vaste-Afvalbestuur geïnisieer is. Beide kwantitatiewe en kwalitatiewe metodes is gebruik om die analises uit te voer. ‘n Materiaal vloei-analise model (MVM) is gebruik om die vloei van afval deur die afvalbestuur-sisteem te volg. Die voordeel van die toepassing van die MVM-model word uitgelig in die literatuur in terme van identifisering van potensiële herwinning en ander afvalbehandelings-metodes en die voorspelling van die uitkomste van afval-behandeling en wegdoen-inisiatiewe. Die hoofdoel van die studie was om ‘n aangepaste MVM-metode toe te pas om die vordering van die bestaande afvalbeperkings programme vas te stel asook om die gebruik van bioafbreekbare en ander herwinbare komponente van die afvalstrome beter te kan benut en daardeur ‘n verbetering van die GABS van die Stad Kaapstad teweeg te bring. Die MVM het goeie insig gebied in die vloei van afvalmateriaal in die Stad Kaapstad. Die massa-waardebepaling van afvalverminderings-fasiliteite, soos die Belville kompos-aanleg en die Athlone materiaalherwinningsfasiliteit asook die afval-oordragstasie, het onthul dat daar nog groot hoeveelhede biodegradeerbare munisipale vaste-afval in die stortingsterreine beland ten spyte van die afvalbeperkings-fasiliteite wat beskikbaar is. Dit is egter nog te vroeg om ‘n gevolgtrekking oor die sukses van die “Think Twice” veldtog te maak aangesien dit 'n redelike nuwe inisiatief is wat op die terugvoer van die publiek staatmaak. Daar is uitdagings wat verband hou met die herwinbare afvalhersteltempo’s soos byvoorbeeld: openbare bewustheid, goeie advertering asook operasionele probleme wat nog aangespreek moet word. Die MVM resultate het ook ‘n daling in die verskillende afval-tipes wat deur die verskillende afvalbeperkingsfasiliteite van die Stad Kaapstad gestuur word, getoon. Die huidige institusionele reëlings en wetgewende omgewing het baie verbeter, maar daar is nog 'n aantal skuiwergate wat aangespreek moet word. Die grootste algehele uitdaging tans is die ontwerp van ‘n praktiese plan om die skuiwergate te oorkom en om ‘n kringloop in die ekonomie te ontwikkel. Die "wieg-totwieg" benadering berus op uitgebreide produsente verantwoordelikheid en ander streng beheermaatreëls wat waarskynlik negatiewe gevolge in die Suid-Afrikaanse konteks gaan oplewer. Daar is egter nog baie werk wat gedoen moet word om ‘n geïntegreerde en volhoubare stelsel vir die bestuur van vaste-afval daar te stel.

This paper is an investigation into the role of the Nelson Mandela Bay Metropolitan Municipality (NMBMM) in the up-keep and management of open spaces, in Zwide Township. The study examines the manner in which the legislative framework for waste management is being implemented as prescribed in legislative directives. The Constitution of the Republic of South Africa Act, 1996 (Act 108 of 1996), envisions the transformation of the local government system. Subsequently, policy frameworks and principles have been developed to support the new vision of local government. The Batho Pele Principles and the white paper were passed in March 1998. Both documents spelt out the implementation of the principle and the framework in which the local government system should operate as set out in the developmental local government concept. The developmental local government system’s core ethos lies in working with local citizenry to find ways of meeting their needs, thereby improving their quality of life. It also makes provision for public participation. Ward councillors and ward committees are an indispensable backbone of community participation. It is assumed in this study that a number of environmental, social, economic and health challenges are associated with waste disposal in open spaces. Such hazards range from health risks to the abuse of open spaces by antisocial individuals and groups. The situation is exacerbated by poor implementation of constitutional and legislative directives regarding waste management and disposal to ensure a humane and environmentally friendly atmosphere. The research assumes that the problem cannot be overcome by the NMBMM alone. Well-orchestrated community awareness education programmes such as projects like “trash is cash “and innovative ways of managing waste, including waste recycling, need to be drawn upon. The strategic placement of waste stations and the timeous collection of waste could improve the situation. The observation is that the level of service delivery varies within residential areas and in socioeconomic strata. The previously disadvantaged areas seem to have borne the brunt in terms of poor waste management services until now. The municipality has been accustomed to a situation whereby it removes the waste on an ad hoc basis in selected areas in the townships. The situation is exacerbated by little foresight into the ever growing population, specifically amongst the lower socioeconomic sector of the population. As a result, the ecology and environment is impacted in a negative way. Amidst the challenges of dumping in open spaces, a sense of determination appears within the community to want to prevent the situation; to illustrate: There is an organized group of youths who have cleaned up open spaces at along Qeqe Street in Zwide. They developed a car wash bay as a venture to generate an income. The Green Township Movement is another scheme which is mobilising the community, street by street, to keep their neighbourhood environmentally clean and green. Potentially, the Waste Management Directorate could collaborate with these groupings to halt waste dumping in open spaces. In so doing they could contribute to establishing an environmentally friendly neighbourhood. The NMBMM needs therefore to take advantage of the situation and reengineer its waste management strategy, policies and directives and augment the initiatives that the community have taken upon themselves. The study will endeavour to ultimately advise on viable strategies in an attempt to unravel barriers that have been identified, while simultaneously addressing the challenges to improving the quality of life in the township. This will be done by analysing a legislative framework and thereafter replicating the best practice used locally, nationally and internationally.. It also seeks to associate with individuals within local government in addition to groups that are like minded in combating the concern. The existing environmental regulations and the present economic situation are sound starting points. Together they present an opportunity to change the prevailing attitudes towards recycling. Finally, a number of conclusions that were arrived at during the study will be followed by recommendations. These will be based on the literature review and observations.

Bibliography: p. 367-392. This thesis takes an overview of urban waste disposal practices in Sydney, Melbourne and Adelaide since the time of their respective settlement by Europeans through to the year 2000. The narrative identifies how such factors as the growth of representative government, the emergence of a bureaucracy, the visitation of bubonic plague, changed perceptions of risk, and the rise of the environmental movement, have directly influenced urban waste disposal outcomes.

The hydrometallurgical refining of platinum group metals results in large volumes of liquid waste that requires suitable treatment before any disposal can be contemplated. The wastewater streams are characterized by extremes of pH, high inorganic ion content (such as chloride), significant residual metal loads and small amounts of entrained organic compounds. Historically these effluents were housed in evaporation reservoirs, however lack of space and growing water demands have led Anglo Platinum to consider treatment of these effluents. The aim of this study was to investigate whether biological wastewater treatment could produce water suitable for onsite reuse. Bench-scale activated sludge and anaerobic digestion for co-treatment of an acidic refinery waste stream with domestic wastewater were used to give preliminary data. Activated sludge showed better water treatment at lab scale in terms of removal efficiencies of ammonia (approximately 25%, cf. 20% in anaerobic digestion) and COD (70% cf. 43% in digestion) and greater robustness when biomass health was compared. Activated sludge was consequently selected for a pilot plant trial. The pilot plant was operated on-site and performed comparably with the bench-scale system, however challenges in the clarifier design led to losses of biomass and poor effluent quality (suspended solids washout). The pilot plant was unable to alter the pH of the feed, but a two week maturation period resulted in the pH increasing from 5.3 to 7.0. Tests on algal treatment as an alternative or follow-on unit operation to activated sludge showed it not to be a viable process. The activated sludge effluent was assessed for onsite reuse in flotation and it was found that there was no significant difference between its flotation performance and that of the process water currently used, indicating the effluent generated by the biological treatment system can be used successfully for flotation. Flotation is the method whereby minerals refining operations recover minerals of interest from ore through the addition of chemicals and aeration of the ore slurry. Target minerals adhere to the bubbles and can be removed from the process.

Every time a good is produced, waste occurs as an unwanted by-product. Waste has become a real environmental issue across the world, contributing to the degradation of the environment and human health. As part of a local and international effort to lessen industrial pollution, a concept to reduce waste production at source was introduced to companies in the early 1990s. Pioneered in the Netherlands and the United Kingdom (UK), this concept has been termed 'waste minimisation'. Waste minimisation is achieved by implementing changes to business practices and processes, such as improved housekeeping (e.g. prevention of spills), and changes to equipment that is less wasteful. It is often undertaken by a group of organisations, including for example service providers, manufacturing companies and regulators that join a waste minimisation club (WMC). This provides an opportunity in which training can be received by, waste minimisation assessments made on, and information and ideas about waste reduction at source exchanged by member companies. WMCs have been used successfully in Europe to achieve waste minimisation in industry and residential communities. This study aims to contribute to the development of a sustainable WMC model in South Africa. It analyses the WMC support structures in South Africa and compares them to support structures offered in the UK. This offers a point of reference from which the impact of South African support structures on WMCs in general, and the Pietermaritzburg Waste Minimisation Club (PWMC) in particular, can be established. The PWMC consists of small and medium companies across sectors, each with less than 200 employees and with an annual turnover less than 40 million rand. The club was initiated by the Pollution Research Group of the University of KwaZulu-Natal (UKZN). It was the first of its kind in South Africa, having been facilitated on a small budget by staff and students from the UKZN. The study found that the self-help approach adopted by the PWMC was only partially successful. The PWMC was successful in terms of raising awareness of its members to waste minimisation issues. The study also found that member companies, both from the PWMC and WMCs generally, need to be shown in practical terms that 2 waste minimisation can result in financial savings before management buy-in can be attained. If more University manpower had been allocated, in the form of students for instance, to identify and orchestrate implementation of sustainable waste minimisation solutions, the PWMC member adoption rate of waste minimisation may have been raised. The small PWMC budget may have made this impossible, however. Lack of funding may also have prevented facilitators putting together a large support team, as has been done for a similar and more successful project in England. This demonstrates that self-help WMCs need an initial funding boost to be successful. This funding should be invested in gaining buy-in from company personnel rather than to drive the waste minimisation process on behalf of member companies. Driving waste minimisation on behalf of companies or 'hand-holding' leads to a passive acceptance of waste minimisation as is currently the case in South Africa, as well as 'shirking' as has been observed in the UK. Such a facilitated self-help approach can then lay the basis for WMCs, which use the support infrastructure established by their predecessors. Studies of WMCs in England and Wales based on a self-help approach showed that they achieved financial savings that are comparable to those in demonstration clubs. The promotion of such sustainable WMCs in South Africa needs to be performed by a central support agency such as the British Envirowise. Envirowise was seen to successfully promote waste minimisation among those it reached. However, it reached only a small percentage of overall industry. A successful South African agency therefore needs to promote itself effectively and nation-wide. A successful South African Envirowise organisation should also facilitate the creation of WMCs by leading a forum of industry, service providers, higher education and waste minimisation champions of proven worth, to create an action plan for WMC development for each province. Each province would then allocate funds for a waste minimisation champion who, in conjunction with the local development agency, would create a provincial action plan for the development of facilitated self-help WMCs. The local support and expertise recruited to form and manage WMCs would decrease costs and leverage income. This kind of support agency needs to be upheld by waste management legislation based on the concept of sustainable development, recognising the need for environmental protection alongside that of economic growth. To date no such legislation is in place in South Africa. It is hoped that the White Paper on Integrated Pollution and Waste Management, which endorses the principle of sustainable development alongside with the necessity to reduce waste at source, will form the basis for a successful South African WMC culture.
Thesis (M.Env.Dev.)-University of KwaZulu-Natal, Pietermaritzburg, 2005.

A research report submited to the Faculty of Engineering and the Built Environment, of the University of the Witwatersrand, Johannesburg, in part all fulfillment of the requirements for the MSc. (Building) in Construction Project Management.
Construction waste minimisation and avoidance at the design stage of a construction project is the most favourable solution in the existing waste management hierarchy triangle. However, there are currently only a limited number of exploratory and context-specific studies that state effective construction waste minimisation factors which can be implemented during the design stage. This can be regarded as a relatively new concept and new research topic, especially as no studies have been done in a South African or a Gauteng region context. This research report aims to address this local knowledge gap. The research method included an initial conceptual framework of factors (identified from surveying both global and local literature) as a launch pad in order to quantitatively survey design consultants in Gauteng with regards to both the significance and ease of implementation of the identified factors. The research target population consisted of; architects, architectural technologists, architectural draughtsman, structural engineers, structural technologists, structural draughtsman and finally sustainability consultants. The target population was further narrowed by only including designers who have both attempted to minimise construction on greenfield projects in Gauteng and who have received Green Building Council of South Africa (GBCSA) accreditation on the same project. This report presents a hierarchical list of twenty-six critical factors that can be implemented during the design stage in order to minimise or avoid construction waste in the context of Gauteng, South Africa. The report further indicates which of these factors will be easier to implement than others. These factors are aimed mainly at clients of construction projects, as they are in essence the stakeholders who will contractually enforce designers to implement these construction waste minimisation factors in order to lower project costs. Furthermore; these factors will also serve as valuable references for the Gauteng Provincial Government as the factors can be utilized in order to drive provincial construction waste regulations and eventually national reform.

Through the National Environmental Management Act (No. 107 of 1998), the South African Department of Environmental Affairs and Tourism (DEAT) introduced the concept of the Waste Hierarchy (Reduce - Reuse - Recover - Dispose) as the only possible road towards sustainable development. This concept of sustainable waste management was extended into the Polokwane Declaration on Waste Management which identified Zero Waste as the ultimate goal for sustainable waste management systems in South Africa. Zero Waste is defined as the concept of using all waste produced in a certain area for production activities in that area when it is environmentally acceptable, socially equitable and economically viable, with unavoidable residual waste going to landfill. The aim of this thesis is to test the applicability of Zero Waste to post-consumer waste arising from rural and urban areas. The primary reason that this study has been attempted is that little research in South Africa has focused on the demand-side management of post-consumer waste, and that whatever research that has been undertaken has focused almost exclusively on waste management in urban areas. In order to realise the aim of this thesis, two case studies were selected and analysed: one rural and one urban. These case studies were selected due to differences in characteristics of the waste arising from households, existing waste management systems and socio-economic indicators for households in these areas. In each case study, a proposed Zero Waste Scheme was assessed for application based on four sustainability criteria: environmental, social, economical and institutional. The Zero Waste Schemes are based on the conceptual Zero Waste Model (ZWM) that has been specifically developed as the main tool for conducting this research. The development and use of the ZWM in assessing waste management systems in South Africa is a significant contribution of this thesis to knowledge. Generally, the results showed that the proposed Zero Waste Schemes could meet three of the evaluation criteria used in the investigation, but could not meet the fourth: institutional sustainability. For this reason, the Zero Waste Schemes could not be implemented since the municipalities responsible for waste management in those areas did not have the capacity administrative, financial resources and political will - to implement them. Thus, institutional sustainability has been shown to be the main constraint in the application of Zero Waste Schemes in post-consumer waste management systems in South Africa. This is another significant contribution of this thesis to knowledge.Other significant findings from this study reveal that rural areas lack basic waste collection and disposal systems; hence this lack in service delivery prevents full implementation of Zero Waste Schemes in these areas. In contrast, households in urban areas are served by integrated waste management systems that extend to most households, and most of these households are able to finance the waste management services provided. The existence of the integrated waste management systems was used as a basis for introducing waste minimisation and at-source separation of recyclables in order to reduce the amount of waste needing disposal. Education of households in urban areas has been identified as a key factor in establishing Zero Waste Schemes in the case study areas. In conclusion, it has been shown in this thesis that although Zero Waste Schemes are theoretically applicable to rural and urban areas of South Africa, institutional constraints that will have to be overcome in order to make Zero Waste a reality. Implicit in this conclusion is the extension of waste collection services to rural households and the full participation of rural and urban households in Zero Waste Schemes, participation which can only be verified by actual implementation of the schemes. This is the next step in the approach towards Zero Waste within post-consumer waste management in South Africa.
Thesis (Ph.D.)-University of KwaZulu-Natal, Durban, 2009.

Environmental legislation is becoming more stringent as people are realising the need for conservation and a reduction of environmental degradation in order to facilitate sustainable development. To ease legislative pressures, companies need to work together in symbiotic networks, whereby co-operation between companies results in far more innovative practices than if the companies acted individually. Success in an industrial network is largely dependent on cleaner production, where industries seek to redirect from waste treatment to waste minimisation. Cleaner production has already received international recognition and waste minimisation initiatives have been used as a tool of cleaner production. Two polluting industrial sectors within South Africa, the textile and metal finishing sectors, were chosen to investigate waste minimisation concepts. One company from each sector was used as a case study. The dissertation followed company network identification, potential to participate within an industrial symbiotic network, and waste minimisation opportunities. Suppliers and buyers, up and down the product line were identified. Relationships with these partners should be advanced such that environmental concerns are at the forefront of any decision-making. In light of developing industrial networks and maintaining symbiotic relationships, the company's potential was investigated by interviewing employees of various ranks. Both companies were partially suited to participate within an industrial symbiotic network and company-specific barriers were identified, such as ineffective internal communication. The waste minimisation investigation followed a four-phase approach of planning and organisation; pre-assessment; assessment; and feasibility study. In both the companies investigated, water savings were identified as the waste minimisation focus area with potential for improvement. In total, potential water savings of over R80 000 per annum were identified. In the textile company, the weaving department and bleach house were further investigated. Cloth weaving errors were attributed to machine stops, as each stop has the potential to result in a cloth fault. In the bleach house the potential existed to reduce the number of rinse tanks. Although a modem and automated process, the plating plant in the metal finishing company was identified as having potential waste minimisation opportunities. Of particular interest was the reduction of solution carry over from the plating tanks into subsequent tanks. Extended drip times were investigated. Additional waste minimisation opportunities included repairing pipe leaks, replacing the degreasing solvent, trichloroethylene, with a less harmful cleaning agent and establishing a symbiotic relationship with the oil supplier, Castrol. Over and above the main waste minimisation opportunities highlighted, other recommendations and potential savings were identified. Each case study emphasises that simple waste minimisation initiatives, without expending capital, reduce demands on natural resource, such as water, and benefit the company financially. Successful waste minimisation leads to further cleaner production initiatives, which may then initiate better network interactions with the further potential of promoting sustainable development.
Thesis (M.Sc.Eng.)-University of Natal, Durban, 2002.

The inception of global warming has resulted in mitigation efforts across all relevant sectors. Waste management activities produce approximately 12% of methane emissions in South Africa. The current scope of waste management favours sustainable strategies targeting zero waste and waste diversion, however landfill disposal of municipal solid waste (MSW) is still the primary strategy employed by South African municipalities. This study evaluated the greenhouse gas (GHG) impacts of various waste management scenarios that included recycling, composting, anaerobic digestion, and landfill gas recovery through case studies of the eThekwini Municipality (Mariannhill landfill) and uMgungundlovu District Municipality (New England Road landfill) MSW streams. Each waste management strategy was assessed on the basis of GHG emissions, landfill space savings and economic feasibility. A waste stream analysis (WSA) was conducted to obtain both the qualitative and quantitative data required. The results of the WSA determined that the biogenic fraction of the MSW stream for typical South African municipalities varies between 32-40% while the recyclable fraction ranges between 38-44%. The Waste Resource Optimisation Scenario Evaluation (WROSE) model was developed for the quantification of GHG emissions and is based on the US EPA emissions factors for landfill disposal, landfill gas recovery, recycling and composting. An emissions factor was derived to include the GHG impacts of anaerobic digestion using a streamlined life cycle analysis approach. The results confirmed that recycling, anaerobic digestion and composting all produce GHG reductions, in comparison with the baseline scenario of landfill disposal, and a combination thereof through Mechanical Biological Treatment (MBT) produced the greatest net GHG reductions (between -63,338 to -71,522 MTCO2e/annum for the New England Road MSW stream, and -71,280 to -86,123/annum MTCO2e for the Mariannhill MSW stream). The results indicated that the implementation of MBT scenarios would produce landfill space savings of 94,375 to 103,302 m3 for the Mariannhill landfill, extending the landfill lifespan by 12-14 years, while savings of 73,399 – 74,100 m3 could be realised for the New England Road landfill, extending the landfill lifespan by 2-3 years. The study concluded that while the focus of waste management has changed and zero waste/waste diversion goals require alternative waste management methods to be implemented, the capital and operational costs of some technologies are the main barrier for implementation in developing countries, and that the environmental and social benefits should be evaluated further to truly gauge the costs/benefits involved.
Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, Durban, 2010.

Growing municipal waste mismanagement and associated environmental impacts is an enormous environmental concern in developing countries such as South Africa. Hence, this study explored current waste management and minimisation patterns and practices in the Ekurhuleni Metropolitan Municipality (EMM), located east of the Gauteng province. The study was undertaken using a mixed method design, particularly the concurrent triangulated design where the quantitative and qualitative data were collected at the same time. The methods employed were desktop surveys, interviews with the participants and use of questionnaires which were designed based on the objectives of the study. The questionnaires were designed for different types of participants (namely, households, informal reclaimers, municipal officials and landfill officials). All the data collected were stored in Microsoft Excel (2010) spread sheet for statistical analyses. The study has revealed some patterns, practices as well as trends regarding waste management and minimisation within the EMM municipality. At household level, there was some environmental awareness on waste management practices provided by the municipality as well as local recycling options although there are numerous challenges to be resolved before these functions can become effective. With informal recycling, a number of waste materials are being reclaimed at various landfill sites. However, current informal waste picking activities by the so-called scavengers are not sustainable as waste is not separated prior to disposal at various point sources. In addition, informal reclaimers have to travel long distances to reach waste sources. Another concerning constraint hampering the effectiveness of informal waste recovery, has to do with their daily exposure to several environmental and health risks. Furthermore, the study has found out that the EMM is predominantly focused on providing better waste management services rather than balancing this activity with waste minimisation through reclaiming and recycling operations. Thus, the municipality lacks adequate infrastructure to undertake waste minimisation effectively. Also, waste minimisation and awareness campaigns were found to be inadequate and at an infant stage, unlike those carried out by private companies. In view of these findings, a number of recommendations have been made.
Environmental Sciences
M. Sc. (Environmental Science)

M. Tech. Construction Management
This dissertation is primarily concerned with the investigation of waste generation rates, the causes of waste and waste management strategies adopted in the construction industry in Tshwane, South Africa.

Bibliographical refernces appear at the end of each chapter
This study reviews solid waste management practices in Polokwane City. The study area covered some of the residential areas in Polokwane City; namely; Ivy Park, Fauna Park, Welgelegen, Westernburg and the City Centre. This article describes two main methods that were used to collect data; that is Qualitative and Quantitative method. Field survey was also made to validate data obtained from the participants that were interviewed during qualitative data process. After framing the problem, the objectives of Solid Waste Management Practices in Polokwane City were briefly outlined as follows: • Assess solid waste management practices in Polokwane City. • Make comparison on how households and the municipality take responsibility in storing, collecting, transporting, treating and disposing solid waste. • Investigate what problems the City encounters in managing solid waste. • Make relevant recommendations aimed at improving solid waste management practices within the City. The service management was administered by the municipality and private sector. From the five study residential areas, the Municipality manages waste in the City Centre while the private sector manages waste in the other residential areas. However, the City continues to play an administrative role over the contracted service provider. Statistical results were presented in figures and tables. The results showed the storage habits, frequency of collection, mode of transport and methods of disposal for solid waste in Polokwane City. The only method of disposal in the city was found to be landfilling. Activities that took place at the landfill site, such as reclaiming were outlined together with the economic values that these activities add to the City. The study also revealed that as population increases, the amount of solid waste generated also increased.
Environmental Sciences
M. Sc. (Environmental Management)

The increase in global population and high urbanisation rates characterised by high resource consumption and waste generation levels has led to challenges in waste management around the world. Waste management remains one of the most critical challenges faced by local governments in developing countries. Informal business enterprises have come under the spotlight for their high waste production and poor waste management practices. Many arguments have been put forward as to the real environmental impacts caused by informal business enterprises due to their waste practices. This research aimed at assessing the waste management practices in the informal business sector in Olievenhoutbosch Township, Pretoria. Data collection was carried out between March 2016 and September 2016. The research utilised both qualitative and quantitative methods. The methodology employed techniques that included structured questionnaires, structured interviews and field observations. Semi- structured face to face interviews were carried out with key informants. These interviews provided information on the frequency of waste collection, available waste management awareness and challenges faced in delivering the service. The research also involved 230 field observations to study the pattern and frequency of waste collection and waste behaviours by informal business enterprises. Questionnaires were administered to 120 informal business enterprises with a response rate of 84.17%. Data from questionnaires and field observations indicated that waste generated by informal business enterprises (plastic bags, card board, packaging plastics, glass bottles and plastic bottles) was mainly recyclable waste. The most preferred disposal methods were use of refuse plastic bags (31%), open space dumping (20%) and burning (30%). Analysis of the results showed that there was lack of information on waste management and that also influenced waste behaviours. Preferences for waste disposal methods were influenced by many factors including lack of information, shortage of waste disposal facilities and waste collection frequency by the local town council. The research found that waste collection in various sections of the township was done once per week which has led to increased indiscriminate waste dumping and burning of waste. It was recommended that waste management information be provided to informal business enterprises especially on waste separation and recycling. The municipality should increase frequency of waste collection or provide central point waste facilities to business operators.
Environmental Sciences
M. Sc. (Environmental Science)

Thesis submitted in partial fulfillment of the requirements for the degree of Doctor of Technology: Department of Chemical Engineering, Durban University of Technology, 2007.
The metal finishing industry has been rated among the most polluting industries worldwide. This industry has traditionally been responsible for the release of heavy metals such as chrome, nickel, tin, copper etc into the environment. The application of cleaner production systems to a range of industries, including the metal finishing industry has provided significant financial and environmental benefits. An example of a successful application cleaner production in the metal finishing industry is the reduction in the typical water consumption from 400 1/m² to less than 10 1/m² of plated product. The successful application of cleaner production to the mental finishing industry has encountered many barriers. These barriers include the need for a highly skilled cleaner production auditor and the need for rigorous plant data to effectively quantify the cleaner production potential of the company under consideration. This study focuses on providing an alternate user-friendly audit system for the implementation of cleaner production in the mental finishing industry. The audit system proposed eliminates the need for the need for both a technical auditor and rigid plant data. The proposed system functions solely on plant operator inputs. The operator’s knowledge is harnessed and used to conduct an efficient and effective cleaner production audit. The research is based on expert knowledge, which was gained by conducting audits on some 25 companies using traditional auditing tools. This company audits were used to construct a database of data that was used in the verification of the models developed in this study. The audit is separated into different focus components. The first system developed was based on fuzzy logic multi variable decision-making. For this system the plant was categorized into different sections and appropriate fuzzy ratings were allocated based on experience. Once the allocations were completed multi variable decision analysis was used to determine the individual variable impact. The output was compared and regressed to the database equivalent. Operator inputs can then be used to determine the individual category outputs for the cleaner for the production rating for the company under consideration. The second part of this study entails the development of mathematical models for the quantification of chemical and water consumptions. This was based on the present and ideal (cleaner production) plant configuration. Cleaner production operations are compared to present operations and potential savings quantified. Mathematical models were developed based on pilot scale experiments for the acid, degreaser and zinc plating process. The pilot experiments were carried out on a PLC controlled pilot plant. These models were developed form factorial experimentation on the variables of each of the plating processes. The models developed aid in the prediction of the relevant optimum consumptions. The key challenge in traditional evaluation systems has been the quantification of the plant production. The most effective measure of production is by means of the surface area plated. In this study a novel approach using the modeled acid consumption is proposed. It was assumed that the operator inputs for the above models would not be precise. The models developed allowed for input variations. These variations were incorporated into the model using the Monte Carlo technique. The entire cleaner production evaluation system proposed is based on an operator questionnaire, which is completed in visual basic. The mathematical model was incorporated into the visual basic model. For the purpose of model verification the mathematical models were programmed and tested using the engineering mathematical software, Mat Lab. The combined fuzzy logic and mathematical models prove to be a highly effective means of completing the cleaner production evaluation in minimal time and with minimal resources. A comparative case study was conducted at a local metal finishing company. The case study compares the input requirements and outputs from the traditional systems with the system proposed in this study. The traditional model requires 245 inputs whilst the model proposed in this study is based on 56 inputs. The data requirements for the model proposed in this study is obtained from a plant operator in less than one hour whilst previous models required high level expertise over a period of up to two weeks. The quality of outputs from the model proposed is found to be very comparable to previous models. The model is actually found to be superior to previous models with regards predicting operational variations, water usages, chemical usages and bath chemical evolution. The research has highlighted the potential to apply fuzzy-mathematical hybrid systems for cleaner production evaluation. The two limitations of the research were found to be the usage of a linear experimental design for model development and the availability of Mat Lab software for future application. These issues can be addressed as future work. It is recommended that a non-linear model be developed for the individual processes so as to obtain more detailed process models.

This qualitative study explores daily environmental sustainable attitudes and behaviours of Gauteng’s urban youth. A social constructivist paradigm underlines the views, challenges and activities expressed. The Reasonable Person Model (RPM) and Social Networking Theory ensure that the content, as well as methodological elements and results herein adhere to a psychological framework. Focus groups and online interviews were utilised to explore the link between community well-being and the state of the natural environment and the sample was drawn using purposive and snowball sampling. The literature reviewed focuses on existing climate change concerns, pro-environmental attitudes and behaviours, and emerging local and international practices, including the importance of expanding local practices. A thematic analysis, ensured for a broad variety of responses, and hence detailed discussion -of and dissemination of results. Using common threads in the results, recommendations and suggestions were made, to improve future studies and research practices concerning Environmental Responsible Behaviours (ERBs).

While contemporary environmental problems arise partly from increased industrial activities resulting in waste creation, the continued extraction and depletion of earth’s natural resources by organisations to meet consumers’ demand have led to unsustainable business practices (Jennings & Zandbergen 1995). Moreover, reversing the negative environmental impact caused by unsustainable business practices is the responsibility of the organisations whose activities cause harm to the environment (Ahuja & Khamba 2008). More importantly, managers require adequate and accurate financial and non-financial information on their unsustainable business practices to successfully manage both internal and external environmental effects of their actions (Schaltegger & Burritt 2000). But the lack of contemporary management accounting tools to capture waste information in the brewery process reduces the chance to improve waste-reduction decisions while opportunities for cost savings are also lost. Admittedly, Gale (2006:1231) argues that conventional management accounting Systems (MASs) do not have the ability to adequately monitor the increasing material costs and overheads in production processes with sufficient transparency. Nevertheless, this inability to provide adequate process waste information may likely limit organisations’ effort to implement and achieve desired waste-reduction strategies. As a result, it is imperative to integrate both physical and monetary waste information for sound decision-making. The main objective of this study is to adopt and adjust the existing MFCA framework to support and improve on managers’ process waste-reduction decisions in the South African brewery industry. In order to achieve this main objective, the study: • examines the extent to which conventional MASs provides process waste information to support waste-reduction decisions in a micro-brewery (Hope Brewery) and a large brewery (SAB Ltd); • assesses the impact of insufficient process waste information as provided by the conventional MASs on brewery waste-reduction decisions in a micro-brewery (Hope Brewery) and a large brewery (SAB Ltd); and • adjusts the existing MFCA framework to include waste categories subsumed or neglected in the provision of waste information to improve brewery waste-reduction decisions. vi The study adopted an exploratory multiple case study approach by means of in-depth interviews and a pilot study in two breweries- a micro-brewery and a large brewery to achieve the study objectives. Findings revealed that, while the use of technology is essential to reduce brewery process waste, there is lack of appropriate waste-capturing management accounting tool in both organisations. Besides it is essential for organisations to adopt appropriate management accounting tool to capture waste-related information for improved waste-reduction decisions and selection of appropriate waste management strategy. The study therefore suggests the adoption of an adjusted MFCA framework for a more robust approach to improve waste-reduction decisions since ‘what cannot be measured cannot be managed’.
Management Accounting
D. Comm. (Management Accounting)

Integrated management of municipal and hazardous waste is one of the challenges facing the new municipalities in South Africa, especially those located in previously disadvantaged rural areas. However, much of the research on solid and hazardous waste management in South Africa has examined waste management problematics in urban areas, the majority of which are located within the jurisdiction of local governments which are comparatively effective in terms of providing adequate disposal services. By contrast, this study has examined the environmental risk assessment associated with unregulated landfill sites in the Albert Luthuli municipality, in the Mpumalanga province. The determination of the environmental risk was achieved by the use of questionnaire surveys and landfill analysis forms in selected study areas. The findings have highlighted a very high environmental risk, nearly four times and above, the threshold limits set by the Department of Environmental Affairs and Tourism (DEAT, 2005:15) for all of the landfill sites examined. Several exposure pathways stemming from associated environmental impacts have also been identified for the study. The higher environmental risk determined for the problem sites is ascribed to numerous factors, including their ill-planned location, the sensitivity and vulnerability of the natural environment and adjacent rural settlements, the lack of appropriate waste pre-treatment processes prior to disposal, and most significantly, the lack of regulatory and control measures to contain the myriad of environmental problems generated. In conclusion, it is recommended that several measures (including closure) should be taken in order to reduce and contain the magnitude of environmental risks involved.
Environmental Sciences
M.Sc.(Environmental Sciences)