Bibliografias temáticas / Drinking water Arsenic content Bangladesh

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Literatura científica selecionada sobre o tema "Drinking water Arsenic content Bangladesh"

Autor: Grafiati
Publicado: 4 de junho de 2021
Última modificação: 25 de janeiro de 2023

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Artigos de revistas sobre o assunto "Drinking water Arsenic content Bangladesh"

1

Nahar, N. "Causes and distribution of arsenic contamination in Bangladesh: evidence from the literature". Water Policy 11, n.º 3 (1 de junho de 2009): 362–78. http://dx.doi.org/10.2166/wp.2009.045.

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In attempting to eliminate disease caused by drinking polluted surface water, millions of tube-wells were drilled in Bangladesh. However, owing to arsenic in groundwater, the availability of safe drinking water has declined from earlier achievement of 97% to 51.2%. This article reviews the causes and distribution of arsenic concentration in rural Bangladesh from a wide variety of literature. Scientists have converged to two hypotheses for causes of arsenic in groundwater: the pyrite oxidation hypothesis and the oxy-hydroxide reduction hypothesis. There is a positive correlation between arsenic content in irrigated groundwater and arsenic contained in soils. There is a significant presence of arsenic in rice and leafy vegetables. Today, arsenic is causing toxicity to human health and creating major social problems. This finding implies that, had there been a precautionary measure taken when a new technology tube-well was being introduced, in the form of testing water for harmful metals, the risk that the rural population is facing now could have been drastically reduced. This lack of precautionary measure, before starting a mass installation of tube-wells for drinking and irrigation should be seen as a “human error” and avoided in future water policy and planning.
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Karim, M. R. "Microbial contamination and associated health burden of rainwater harvesting in Bangladesh". Water Science and Technology 61, n.º 8 (1 de abril de 2010): 2129–35. http://dx.doi.org/10.2166/wst.2010.031.

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Rooftop rainwater harvesting has received an increased attention as a potential alternative water supply source both in the coastal and arsenic affected rural areas in Bangladesh. Several programs in installing rainwater harvesting systems have been implemented to mitigate the drinking water problem in the coastal and arsenic affected areas in the country. This study was conducted with a view to assess sanitary integrity, microbial contamination and the associated health risk of the currently practiced rooftop rainwater harvesting mainly used for drinking water supply. Sanitary inspection of the rainwater harvesting systems and an extensive sampling of harvested rainwater from the storage reservoirs and laboratory analysis were conducted. The study findings reveal that harvested rainwater was found to microbiologically contaminated to some extend. The disease burden estimated using QHRA model showed a significant microbial health burden associated with drinking untreated rainwater and both viral and bacterial pathogens dominate the microbial disease burden. In context of arsenic mitigation, rainwater harvesting reduces the health risk from arsenic; however it may increase the microbial disease burden much higher than the level of arsenic health risk at 50 μg/L of Bangladesh standard. Microbial risk needs proper attention through the implementation of a water safety plan for safe and sustainable rainwater harvesting in Bangladesh.
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Bajpai, Rajesh, Vertika Shukla, Upasana Pandey e D. K. Upreti. "Do Lichens have the Ability to Remove Arsenic from Water?" INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT 5, n.º 01 (1 de janeiro de 2019): 47–49. http://dx.doi.org/10.18811/ijpen.v5i01.8.

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Arsenic (As) contamination of groundwater is a serious threat to human health. Apart from anthropogenic sources, favorable geological conditions also result in elevation of the arsenic problem in Asia, especially in South East Asia. More than 100 million people in South East Asian countries especially Bangladesh, West Bengal (India), Vietnam, China, drink and cook with arsenic-contaminated water, which causes chronic health problems for a long time. A large number of mechanism for removing As from drinking water includes the use of filters, which differ in their efficiency and applicability. In the present study, we propose the use of biofilters prepared from lichen biowaste for removal of arsenic from contaminated water. Six lichen species were tested for the applicability as biofilters. The physicochemical analysis confirmed the presence of high elemental (C, N, H, O) content in the treated lichen species. It was observed that species having high elemental content were able to remove arsenic more effectively.
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Akhter, Tangina, Md Zainul Abedin, Jayanta Kumar Basak e Farzana Akhter. "Design and Development of Arsenic and Iron Removal Unit for Drinking Water: A Sustainable Approach in Environment". Asia Pacific Journal of Energy and Environment 3, n.º 2 (31 de dezembro de 2016): 67–74. http://dx.doi.org/10.18034/apjee.v3i2.234.

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This study elucidated and attempted to design and development of arsenic and iron removal unit for drinking water. The process of reducing iron and arsenic from water has been experimented by developing a unit in the Department of Farm Structure at Bangladesh Agriculture University, Mymensingh. In order to test the performance of the developed unit, arsenic contaminated water with four different concentrations like 0.05, 0.10, 0.15 and 0.20 mg/l were prepared in the laboratory and passed into the developed unit and the respective output concentrations were found to be 0.00, 0.01, 0.025 and 0.05 mg/l. The input and output concentrations of arsenic were tested in the chemical testing laboratory under the Bangladesh Institute of Nuclear Agriculture, Mymensingh. Iron contaminated water were collected from four selected tube wells of local Mymensingh and were also passed into the developed unit with four input concentrations like 0.18, 0.1532, 0.179 and 0.133 mg/l and the respective output concentrations were found to be 0.10, 0.1021, 0.11 and 0.09 mg/l. The concentrations of Iron were tested in the chemical testing laboratory under the Soil Resource Development Institute, Dhaka. The results have revealed that iron and arsenic content brings to allowable limit. The developed unit has the capacity to remove Arsenic and Iron and help to eradicates hazardous problem of people.
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Merrill, D., A. Shamim, Ali, Jahan, B. Labrique, Christian e P. West. "Groundwater Iron Assessment and Consumption by Women in Rural Northwestern Bangladesh". International Journal for Vitamin and Nutrition Research 82, n.º 1 (1 de fevereiro de 2012): 5–14. http://dx.doi.org/10.1024/0300-9831/a000089.

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In Bangladesh, approximately 97 % of the rural population uses groundwater as a drinking source. In many areas of the country this water is known to have elevated levels of iron. The contribution to iron intake that this exposure provides, and the impact on health, are unknown. In the pre- and post-monsoon seasons of 2008, we measured iron content of household tube well water, explored local water collection methods, and estimated iron intake through consumption of groundwater for 276 women of reproductive age in a rural setting in northwestern Bangladesh. Groundwater samples were analyzed for total iron (mg/L), arsenic (category of µg/L), pH, temperature (oC), and oxidation-reduction potential (Eh). Participants drank [mean (SD); 2.7 (0.8) L] of water per day, all of which was collected from domestic tube wells. Total iron concentration in groundwater was high, [median (IQR) 16.3 (6.9, 28.2) mg/L], and variable throughout the area. Using this value, estimated daily iron intake [median (IQR)] was 41.1 (16.0, 71.0) mg from drinking water alone. The amount of water consumed was unrelated to its iron concentration (r = - 0.06; p = 0.33) despite potentially unpleasant organoleptic qualities of high iron content in water. Groundwater contributes substantially to daily iron intake of rural Bangladeshi women and currently represents an under-assessed potential source of dietary iron.
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Ohno, K., Y. Matsuo, T. Kimura, T. Yanase, M. H. Rahman, Y. Magara, T. Matsushita e Y. Matsui. "Effect of rice-cooking water to the daily arsenic intake in Bangladesh: results of field surveys and rice-cooking experiments". Water Science and Technology 59, n.º 2 (1 de janeiro de 2009): 195–201. http://dx.doi.org/10.2166/wst.2009.844.

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The effect of rice-cooking water to the daily arsenic intake of Bangladeshi people was investigated. At the first field survey, uncooked rice and cooked rice of 29 families were collected. Their arsenic concentrations were 0.22±0.11 and 0.26±0.15 mg/kg dry wt, respectively. In 15 families, arsenic concentration in rice increased after cooking. Good correlation (R2=0.89) was observed between arsenic in rice-cooking water and the difference of arsenic concentration in rice by cooking. In the second survey, we collected one-day duplicated food of 18 families. As a result, we estimated that six of 18 families likely used the arsenic contaminated water for cooking rice even they drank less arsenic-contaminated water for drinking purpose. We also conducted rice-cooking experiments in the laboratory, changing arsenic concentration in rice-cooking water. Clear linear relationships were obtained between the arsenic in rice-cooking water and the difference of arsenic concentration in rice by cooking. Factors that affect arsenic concentration in cooked rice are suggested as follows: (1) arsenic concentration in uncooked rice, (2) that in rice-cooking water, (3) difference in water content of rice before and after cooking, and (4) types of rice, especially, the difference between parboiled and non-parboiled rice.
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Ahmad, Junaid, Bishwanath Goldar e Smita Misra. "Rural communities' preferences for arsenic mitigation options in Bangladesh". Journal of Water and Health 4, n.º 4 (1 de dezembro de 2006): 463–77. http://dx.doi.org/10.2166/wh.2006.0030.

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In the context of arsenic contamination of groundwater in Bangladesh, this paper analyses rural people's preferences for arsenic-free drinking water options. A particular focus is on rural households' willingness to pay for piped water supply which can provide a sustainable solution to the arsenic problem, and how the preference for piped water supply compares with that for various other household/community-based arsenic mitigation technologies. The analysis is based on data collected in a survey of over 2700 households in rural Bangladesh. Six arsenic mitigation technologies were selected for the study: three-kolshi (pitcher) method, activated alumina method (household-based and community-based), dugwell, pond sand filter and deep tubewell (handpump). The survey results indicate that, after taking into consideration the initial and recurring costs, convenience, associated risks and the advantages and disadvantages of each selected technology, the preference of the rural people is overwhelmingly in favor of deep tubewells, followed by the three-kolshi method. The analysis reveals a strong demand for piped water in both arsenic-affected and arsenic-free rural areas, and scope of adequate cost recovery. Between piped water and other arsenic mitigation technologies, the preference of the rural people is found to be predominantly in favor of the former.
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Kundu, Debasish Kumar, Arthur P. J. Mol e Aarti Gupta. "Failing arsenic mitigation technology in rural Bangladesh: explaining stagnation in niche formation of the Sono filter". Water Policy 18, n.º 6 (10 de agosto de 2016): 1490–507. http://dx.doi.org/10.2166/wp.2016.014.

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Arsenic contamination of shallow hand pump tube well drinking water in Bangladesh has created opportunities for radical innovations to emerge. One such innovation is the household Sono filter, designed to remove arsenic from water supplies. Applying a strategic niche management approach, and based on interviews, focus groups and a workshop, this article explains the Sono filter's failure to establish itself as a successful niche technology. Three explanatory factors are identified: lack of a strong social network (of technology producers, donors, users, and government actors) around it; diverging expectations regarding its potential to be a long-term solution; and lack of second-order learning amongst key actors. Beyond these three factors that help to explain the lack of successful niche formation, this paper clearly shows that the overwhelming dependency on fund-driven projects also deters successful niche formation in the context of the developing world.
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Hoque, Md Imdadul, Md Aktarul Islam e Md Niaz Morshed. "Water quality of Barishal sadar upazila in Bangladesh for drinking, irrigation, aquaculture and livestock consumption". Asian Journal of Medical and Biological Research 6, n.º 1 (8 de abril de 2020): 44–55. http://dx.doi.org/10.3329/ajmbr.v6i1.46478.

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A study was conducted to assess of groundwater and surface water quality of Barisal sadar upazila. Total 22 water samples (11 pond water and 11 groundwater) were collected from January to March, 2017. Samples were slightly acidic in nature and 7 pond water not suitable for aquaculture in respect of pH. Samples of pond were “excellent” and groundwater samples were “good” for irrigation except two high salinity group water for irrigation for EC. Calcium indicates the samples were suitable for aquaculture but 7 samples were not suitable due to higher Mg content. In respect of K, 9 samples were not suitable for aquaculture. Cu concentrations found suitable for all purposes. For Fe and Zn samples are suitable for irrigation and consumption. Chloride showed, samples were not suitable for livestock consumption except 7 ponds sample. Samples are not suitable for aquaculture in respect of Cl, Fe and Zn. For Manganese, samples (except 1) found suitable for consumption. Samples were “excellent” for sensitive, semi-tolerant and tolerant crops in respect of B. Not any samples responded to CO3 test and HCO3 concentrations found normal. All water sources free from Arsenic contamination. Phosphorus concentration in groundwater might not be harmful for multipurpose use. SAR categorized all samples “excellent” class for irrigation except 2 groundwater samples. 15 samples were “suitable”, 3 were “marginal” and 4 were “unsuitable” for irrigation in respect of RSC. For HT, 13 were “moderately hard” and 09 were “hard” limit for irrigation and samples were suitable for drinking and livestock consumption. Asian J. Med. Biol. Res. March 2020, 6(1): 44-55
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Quino-Favero, Javier, Raúl Eyzaguirre Perez, Patricia Prieto Veramendi, Paloma Mogrovejo García e Lisveth Flores del Pino. "Assessing the Removal of Arsenite and Arsenate Mixtures from the Synthetic Bangladesh Groundwater (SBGW) Using Combined Fe(VI)/Fe(III) Treatments and Local Regression Analysis". Water 13, n.º 9 (21 de abril de 2021): 1134. http://dx.doi.org/10.3390/w13091134.

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Arsenic is an inorganic pollutant that, depending on oxidation–reduction and pH level conditions, may be found in natural waters in two variants: As(III) and As(V). Any treatment to effectively remove arsenic from water will be conditioned by the presence of one or both variants. In this context, this study assesses using electrochemically produced Fe(VI) with Fe(III) to remove As(III), As(V), and their combinations from the Synthetic Bangladesh Groundwater (SBGW) containing anions that interfere with iron-based arsenic removal processes. The combined use of Fe(VI) and Fe(III) allowed us to remove the total arsenic below the 10 mg L−1 threshold established by the World Health Organization and Peruvian regulations for drinking water. An optimum combination of 1 mg L−1 of Fe(VI) and 30 mg L−1 of Fe(III) was identified and tested on the removal of four different proportions of As(III):As(V) for two total concentrations: 500 and 250 mg L−1. There were no significant differences in the final removal values under the different proportions of As(III):As(V) for each total concentration, with a final removal average of 99.0% and 96.9% for the 500 and 250 µg L−1 concentrations, respectively.
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Mais fontes

Teses / dissertações sobre o assunto "Drinking water Arsenic content Bangladesh"

1

Aziz, Sonia N. "Valuation of Avoiding Arsenic in Drinking Water in Rural Bangladesh: An Averting Behavior Analysis". Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/AzizSN2007.pdf.

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Uddin, G. M. Saleh. "Groundwater contamination by arsenic in Bangladesh : causes, consequences and solutions". Title page, table of contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09ENV/09envu18.pdf.

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Chowdhury, Ahmedul Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Development of low-cost systems for safe drinking water in areas of Bangladesh and India affected by arsenic". Publisher:University of New South Wales. Chemical Sciences & Engineering, 2009. http://handle.unsw.edu.au/1959.4/43340.

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Safe water options for five arsenic-affected villages (Sarupie, Manikganj; Daniapara, Shirajdekhan; Babutepara, Muradnagar; Iruaien, Laksham; Rahulllabad, Nabinagar) in central Bangladesh were studied in order to assist the local people and to obtain an indication of general solutions to the arsenic problem that is currently affecting ~100 million people on the Indian subcontinent. Arsenic concentrations were measured in all drinking waters believed to be safe and in a random sample of "red" (unsafe) tubewell waters. Depending on geography, history of safe water sources and availability of pond/river, the options of dugwells, deep tubewells and sand filters were recommended for core village areas, combined with sustainable output testing and a distribution system to maximise the benefits of sustainable water output. Very shallow tubewells were recommended for testing in villages where dugwells were successful. Rainwater harvesting was not recommended, due to expense, small storage capacity and summer dry periods. Two dugwells of optimised design were constructed in Iruaien and Daniapara, each serving 50-100 families. The knowledge gained in the villages was incorporated into the first draft of a "Safe Water Book" for dissemination of honest and accurate information about solutions to the arsenic problem. An air/iron treatment system was developed for removal of arsenic from tubewell water in locations where water treatment is the only option available. The system is based on the Bangladeshi "three kalshi" method, but optimised for efficient contact of water with air and iron. It can be constructed like a sand filter, and requires no chemical input, except for clean scrap iron. Spent scrap iron containing arsenic can be incorporated into concrete for safe disposal. A model air/iron system was constructed and run for two years to demonstrate the long-term viability of the device. A colorimetric method, using silver diethyldithiocarbamate, was developed for determination of arsenic in the villages of Bangladesh. The equipment was adapted for rugged field use, and performed successfully without electricity or running water in improvised laboratory space in villages, providing linear calibrations 0-500 ??g/L and a 2σ limit of detection of 5 ??g/L. The appropriate technologies that should be developed or optimised for the arsenic affected region are described and preliminary suggestions are given about means by which self-propagating solutions might be developed in villages to solve the arsenic problem.
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Rammelt, Crelis Ferdinand Institute of Environmental Studies UNSW. "Development and infrastructure in marginalised communities: safe drinking water in rural Bangladesh". Awarded By:University of New South Wales. Institute of Environmental Studies, 2009. http://handle.unsw.edu.au/1959.4/44524.

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The poor in most developing countries are persistently marginalised in their living conditions, including their access to safe drinking water. The research objectives have been (1) to better understand why this state of affairs has endured despite decades of efforts and interventions, and (2) to propose more adequate alternatives. The central case study was concerned with drinking water in rural Bangladesh ?? a matter of grave urgency since the discovery of arsenic in the groundwater more than a decade ago. Millions of users are exposed to dangerous levels of contamination, and the implementation of solutions has been slow and inadequate. Little has been done so far to integrate the research on this complex humanitarian crisis. Many have argued that conventional views on development are ill-equipped to address the ??growing gap?? between rich and poor; the models often fail to interpret inequity beyond mere financial indicators. This thesis therefore puts forward a different analytical framework (based on the theoretical concepts of core-periphery and capital stock). This was designed to increase our understanding of marginalisation by taking into account unequal ownership of, entitlement to, and control over, ecological, technological, organisational and human assets. Through an action research methodology, this analytical framework was informed by a participatory programme that established safe drinking water supplies in several poor and arsenic-affected villages. The learning experience was then fed back into the programme. This pragmatic approach was also systemic, i.e., it emphasised the community level, which was framed within the context of external influences, various other programmes and national policies. This resulted in a clarification of the problem in terms of (1) lack of ownership of community land, resources, drinking water institutions and technical knowledge; (2) restricted access to (non-) governmental services and benefits from public or collective assets; and (3) exclusion from decision-making in new water sector developments. It was concluded that alternative strategies need to focus on vesting ownership, entitlement and control in marginalised communities. The steps to achieve this will have far-reaching ramifications for how organisations, policymakers and funding agencies perceive and plan development projects. The analytical and methodological approach of this thesis is relevant to other cases of marginalisation in different socio-economic contexts.
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von, Brömssen Mattias. "Hydrogeological and geochemical assessment of aquifer systems with geogenic arsenic in Southeastern Bangladesh : Targeting low arsenic aquifers for safe drinking water supplies in Matlab". Doctoral thesis, KTH, Miljögeokemi och ekoteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-53300.

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Naturally occurring arsenic (As) in Holocene aquifers in Bangladesh have undermined a long success of supplying the population with safe drinking water. Arsenic is mobilised in reducing environments through reductive dissolution of Fe(III)-oxyhydroxides. Several studies have shown that many of the tested mitigation options have not been well accepted by the people. Instead, local drillers target presumed safe groundwater on the basis of the colour of the sediments. The overall objective of the study has thus been focussed on assessing the potential for local drillers to target As safe groundwater. The specific objectives have been to validate the correlation between aquifer sediment colours and groundwater chemical composition, characterize aqueous and solid phase geochemistry and dynamics of As mobility and to assess the risk for cross-contamination of As between aquifers in Daudkandi and Matlab Upazilas in SE-Bangladesh. In Matlab, drillings to a depth of 60 m revealed two distinct hydrostratigraphic units, a strongly reducing aquifer unit with black to grey sediments overlies a patchy sequence of weathered and oxidised white, yellowish-grey to reddish-brown sediment. The aquifers are separated by an impervious clay unit. The reducing aquifer is characterized by high concentrations of dissolved As, DOC, Fe and PO43--tot. On the other hand, the off-white and red sediments contain relatively higher concentrations of Mn and SO42- and low As. Groundwater chemistry correlates well with the colours of the aquifer sediments. Geochemical investigations indicate that secondary mineral phases control dissolved concentrations of Mn, Fe and PO43--tot. Dissolved As is influenced by the amount of Hfo, pH and PO43--tot as a competing ion. Laboratory studies suggest that oxidised sediments have a higher capacity to absorb As. Monitored hydraulic heads and groundwater modelling illustrate a complex aquifer system with three aquifers to a depth of 250 m. Groundwater modelling illustrate two groundwater flowsystems: i) a deeper regional predominantly horizontal flow system, and ii) a number of shallow local flow systems. It was confirmed that groundwater irrigation, locally, affects the hydraulic heads at deeper depths. The aquifer system is however fully recharged during the monsoon. Groundwater abstraction for drinking water purposes in rural areas poses little threat for cross-contamination. Installing irrigation- or high capacity drinking water supply wells at deeper depths is however strongly discouraged and assessing sustainability of targeted low-As aquifers remain a main concern. The knowledge gained here can be used for developing guidelines for installing safe wells at similar environments in other areas of Bangladesh.
QC 20111227
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Choudhury, Zubaida Akhtar. "Groundwater arsenic pollution in Bangladesh : a study of water consumption behaviour and decision-making processes within rural communities". Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610220.

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Huang, Shan. "Assessing the Role of Risk Communication in Reducing Exposure to Arsenic in Drinking Water". Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/HuangS2005.pdf.

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Khoda, Sultana Kudrati. "Use of waste glass for arsenic removal from drinking water in Bangladesh : a laboratory and field-based study". Thesis, University of Brighton, 2015. https://research.brighton.ac.uk/en/studentTheses/005851de-5129-479d-9643-b1660342cd52.

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A number of low-cost synthetic filtration media have been proposed for the removal of arsenic (As) from drinking water in areas such as Bangladesh, where exposure to environmental arsenic is a major human health issue. This PhD research project examines the application of recycled glass and waste stainless steel fragments as a practical medium for arsenic removal at a household scale. To assess the performance of recycled glass media as a practical filter bed, glass granules were differentiated by colour, size and mode of glass size reduction (imploded and ground). The selected glass granules were used as media for batch adsorption and column filtration experiments using a prepared As (III) test solution and using natural As-contaminated water in Bangladesh, where recycled glass in column filtration mode was used to treat arsenic contaminated natural water in the presence of other metalloids. Filter media made from recycled glass and waste stainless steel fragments were characterized via SEM and PXRF. SEM study also gave information about the mechanism of arsenic removal by glass granules. Sequential extraction experiments were also performed on used filtration media to assess arsenic removal and adsorption processes. Results indicate that glass granules associated with stainless steel fragments (sstl) can remove arsenic from drinking water at an efficiency suitable for household application. Arsenic removal effectiveness depends largely on the presence of stainless steel fragments with glass (introduced with the glass media during the recycling and preparation process). The glass particle size and mode of size reduction was also found to influence the removal of arsenic: ground glass performed better than imploded glass and smaller ground glass particles (s < 0.5 mm) performed better than imploded glass of the same size. Batch experiment results concluded that glass colour may have minor influences on arsenic removal although the differences were not significant. Further results also revealed that < 0.05 kg sstl can remove arsenic to below acceptable limits from a 0.50 ppm arsenic solution with an effectiveness > 0.168 mg/g sstl. It was found that 57 kg of small clear DSGF (dry sieved ground fresh) glass (s < 0.5 mm) can treat 132.5 l of water with 100% removal of arsenic from starting concentrations of 0.50 ppm, using a recycled glass filter column. There is a scope for improvement of the glass filter media by adding stainless steel fragments but the study did not determine the potential and further work is required to optimize the ratio of DSGF glass and stainless steel fragments. Considering the price and operational drawbacks of other existing filters in Bangladesh, recycled glass has potential to be used in more sustainable arsenic filter filtration units. The results, coupled with the low cost of waste glass, indicate that waste glass should be investigated further for use in domestic water filtration for arsenic removal.
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Boberg, Molly, e Märta Selander. "Systematic and Automatized Hydrogeological Data Capturing for Provision of Safe Drinking Water in Daudkandi, Bangladesh". Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297811.

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Arsenic-contaminated drinking water exposes ~230 million people worldwide to increased risks of several diseases and is considered one of the greatest threats to public health. In Bangladesh, arsenic-contaminated water has been declared the largest poisoning of a population in history, where 39 million people are exposed to arsenic levels above the WHO guidelines (>10 μg/L). Drinking water is mainly provided by tube-wells installed by local drillers and the majority are located in aquifers with high arsenic levels. The major challenges of identifying arsenic-safe aquifers consist of a lack of a common tool for quality assurance of hydrogeological data, post-processing of the data, and a possibility to forward analyzed data to national and local stakeholders. Therefore, the purpose of this study was to investigate the potential of applying a digital solution for collecting and managing hydrogeological data in a quality assured platform. This study was a pilot-project in the sub-district Daudkandi, Bangladesh in collaboration with the KTH-International Groundwater Research Group. To fulfill the purpose, a method was developed for systematic and automated data capturing of hydrogeological information in GeoGIS, an advanced software that proved to be an efficient tool for visualizing hydrogeological data. The results show that collecting a few field data in a systematic and automated way is helpful for interpreting aquifer sequences and will enable better prerequisites for targeting safe aquifers and installing safe tube-wells. Conclusions are that the integration of a digital platform as a decision tool may significantly improve arsenic mitigation strategies. Furthermore, providing information to public and private sectors in Bangladesh would increase the transparency of hydrogeological conditions and may help improve safe water access to high arsenic areas of Bangladesh.
Över 230 miljoner människor världen över exponeras dagligen för arsenik-förorenat dricksvatten vilket kan ge upphov till hjärt- och kärlsjukdomar, diabetes samt olika cancersjukdomar. Arsenik (As) är en extremt giftig halvmetall som är naturligt förekommande i grundvatten och klassas som ett utav de största hoten mot allmän folkhälsa, vilket gör reducerande åtgärder till en samhällsutmaning av global karaktär. Ett land som är hårt drabbat av höga arsenikhalter är Bangladesh, där miljontals människor utsätts för arsenik-nivåer som överstiger WHO:s rekommenderade riktlinjer (>10 μg/L). Dricksvattenförsörjningen tillhandahålls framförallt genom vattenbrunnar installerade av lokala borrare och där majoriteten är placerade i akviferer med skadligt höga arsenikhalter.  Utmaningarna med att identifiera arseniksäkra akviferer är flera, bland annat saknas ett gemensamt verktyg för att hantera, kvalitetssäkra och analysera hydrogeologisk data, samt för att delge denna till olika parter på lokal, regional och nationell nivå. Syftet med den här studien var således att undersöka potentialen i att tillämpa ett digitalt verktyg för insamling och hantering av fältdata från olika databaser till en kvalitetssäkrad plattform. Studien genomfördes som ett pilotprojekt i distriktet Daudkandi, Bangladesh i samarbete med forskningsgruppen KTH-International Groundwater Research Group. För att uppfylla syftet utvecklades en metod för systematisk och automatiserad datainsamling av hydrogeologisk information i GeoGIS, en avancerad mjukvara som visade sig vara ett effektivt verktyg för visualiseringar av hydrogeologiska data. Resultaten visar att insamling av en liten mängd fältdata är till stor hjälp för att tolka akvifersekvenser samt för att urskilja arseniksäkra akviferer, vilket skapar bättre förutsättningar för installation av säkra vattenbrunnar. En slutsats som dras är att integreringen av en digital plattform för datainsamling avsevärt kan förbättra beslutsfattandet för arsenikreducerande strategier samt underlättar ett transparent informationsflöde. Genom att tillhandahålla transparent hydrogeologisk information till privat och offentlig sektor i Bangladesh kan även tillgången på säkert dricksvatten förbättras.
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Annaduzzaman, Md. "Effectiveness of Tubewell platform color as screening tool for arsenic and manganese in drinking water wells: An assessment from Matlab region Southeastern Bangladesh". Thesis, KTH, Mark- och vattenteknik (flyttat 20130630), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124582.

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Arsenic (As) contamination in groundwater is a severe and adverse water quality issue for drinking purposes, particularly in Southeast Asia, where groundwater is the main drinking water source. Bangladesh is one of the countries where arsenic poisoning in groundwater is massive and it is essential to find out a reliable alternative safe drinking water source. In this process, it is very much needed to identify As-rich wells to avoid drinking water from them and to assess the extent of contamination as well. This study attempts to evaluate the potentiality of tube-well (TW) platform color as low-cost quick screening tool for As and Mn as well in drinking water wells (n=272). The result shows strong association of red color platform with As-rich water in the corresponding wells compared to WHO guideline value of 10 μg/L (98.7% certainty) and regional (Bangladesh/India) standard of 50 μg/L (98.3% certainty). The sensitivity and efficiency of red color platforms to screen high As water in TW for 10 μg/L are 98% and 97%. Similarly, for 50 μg/L, it is 98% for both sensitivity and efficiency. However, because of a very low number (n=4) of TW platform stained with black color, it is not possible to make any conclusion on the potentiality of black color as a screening tool for Mn. This study suggests that red colored platform can be potentially used for primary identification of TWs with elevated As concentration and to prioritise sustainable As mitigation management. However, this study does not discard the concept of black colored platform as a screening tool for Mn-rich water. Further study is recommended to evaluate the efficiency of black color as a screening tool for Mn.
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Livros sobre o assunto "Drinking water Arsenic content Bangladesh"

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Arsenic in ground water, the hidden catastrophe: A comprehensive review, Bangladesh perspective. Dhaka: Md. Azizur Rahman, 2004.

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Raihana, Afifa. Silent killer in action: Arsenic contamination in Bangladesh : how to ensure safe drinking water? Dhaka: Striving Towards Environmental Protection, 2004.

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Integrated Approach for Mitigation of Arsenic Contamination of Drinking Water in Bangladesh (Project). Integrated Approach for Mitigation of Arsenic Contamination of Drinking Water in Bangladesh: An arsenic mitigation project in Sharsha Upazila, Jessore : progress report, March 2004. Dhaka: Japan International Cooperation Agency, 2004.

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Integrated Approach for Mitigation of Arsenic Contamination of Drinking Water in Bangladesh (Project). Integrated Approach for Mitigation of Arsenic Contamination of Drinking Water in Bangladesh: An arsenic mitigation project in Sharsha Upazila, Jessore : final report, November 2004. [Dhaka]: Japan International Cooperation Agency, 2004.

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5

Water, Illinois Bureau of. Arsenic in Drinking Water Rule. Springfield, IL: Illinois Environmental Protection Agency, 2002.

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6

Arsenic in drinking water. Washington, D.C: National Academy Press, 1999.

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7

Water, National Research Council (U S. ). Subcommittee on Arsenic in Drinking. Arsenic in drinking water: 2001 update. Washington, DC: National Academy Press, 2001.

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8

Eaton, Andrew D. Analytical chemistry of arsenic in drinking water. Denver, CO: AWWA Research Foundation and American Water Works Association, 1998.

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De, Sirshendu. Arsenic removal from contaminated groundwater. New Delhi: The Energy Resources Institute, 2012.

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Frost, Floyd J. Cancer risks associated with elevated levels of drinking water arsenic exposure. Denver, Colo: AWWA Research Foundation, 2004.

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Capítulos de livros sobre o assunto "Drinking water Arsenic content Bangladesh"

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Das, Natasha, Surajit Bhattacharya e Mrinal K. Maiti. "Biotechnological Strategies to Reduce Arsenic Content in Rice". In Arsenic in Drinking Water and Food, 445–60. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8587-2_18.

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Rahman, Mohammad Mahmudur, e Ravi Naidu. "Potential Exposure to Arsenic and Other Elements from Rice in Bangladesh: Health Risk Index". In Arsenic in Drinking Water and Food, 333–40. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8587-2_12.

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Fukushima, Yosuke, Yoshimi Hagihara e Kiyoko Hagihara. "Social Environment Analysis Regarding Arsenic-Contaminated Drinking Water in Bangladesh". In New Frontiers in Regional Science: Asian Perspectives, 197–215. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55169-0_11.

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Shibata, Sho, Kiyoko Hagihara, Yoshimi Hagihara e Akira Sakai. "Community Level Planning for Arsenic Contaminated Drinking Water in Bangladesh". In New Frontiers in Regional Science: Asian Perspectives, 271–90. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55169-0_14.

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Frisbie, Seth H., Donald M. Maynard e Bilqis A. Hoque. "The Nature and Extent of Arsenic-Affected Drinking Water in Bangladesh". In Metals and Genetics, 67–85. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4723-5_5.

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Gadgil, Ashok J., Susan Amrose e Dana Hernandez. "Stopping Arsenic Poisoning in India". In Introduction to Development Engineering, 359–98. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-86065-3_14.

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AbstractIn the 1980s, most households of rural India and Bangladesh switched from surface sources for their drinking water – which was causing high incidence of diarrheal disease – to groundwater extracted by hand pumps. However, for tens of millions of people, this groundwater contained high levels of arsenic, which has led to what the WHO has called the “largest mass poisoning of a population in history.” This case study describes the development of ElectroChemical Arsenic Remediation (ECAR), which is a technology that uses iron electrodes to oxidize and remove aqueous arsenic from drinking water. Pilot evaluation of ECAR began in 2011, with a 100 L reactor at a school in Amirabad. However, political tensions in Amirabad caused the subsequent 600 L reactor pilot to be relocated to a school in Dhapdhapi. The findings from this pilot enabled the construction of a 10,000-liter per day (LPD) ECAR plant at Dhapdhapi. During this scaling up process, technical and contextual challenges were encountered and overcome, including those arising from intermittent power supply and a hot/humid climate. Additionally, implementation challenges included training of local operators, ensuring continuity of knowledge within the team, revisiting and correcting early mistakes, and additional engineering work needed during commissioning. The 10,000 LPD plant has been successful both technically and financially. However, after the handoff of the ECAR technology and plant to the local partner, Livpure in 2016, no widespread replication of ECAR plants in the region has occurred. The engineering science behind ECAR continues to be an active area of research, with ongoing projects investigating the implementation of next-generation ECAR technologies in rural California and the Philippines.
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Khan, N. "Arsenic safe drinking water in rural Bangladesh". In Arsenic in the Environment - Proceedings, 889–90. CRC Press, 2014. http://dx.doi.org/10.1201/b16767-325.

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"Implementation of safe drinking water supplies in Bangladesh". In Natural Arsenic in Groundwater, 323–34. CRC Press, 2005. http://dx.doi.org/10.1201/9780203970829-42.

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Rammelt, C., e J. Boes. "Implementation of safe drinking water supplies in Bangladesh". In Natural Arsenic in Groundwater, 307–17. Taylor & Francis, 2005. http://dx.doi.org/10.1201/9780203970829.ch32.

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Karim, M., M. Gani, M. Anwar Hossain e M. Amirul Islam. "Arsenic contamination in drinking water of tube wells in Bangladesh". In Natural Arsenic in Groundwater, 163–71. Taylor & Francis, 2005. http://dx.doi.org/10.1201/9780203970829.ch19.

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Trabalhos de conferências sobre o assunto "Drinking water Arsenic content Bangladesh"

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Rahman, Md Mahfujur, M. Aziz Hasan e Kazi Matin Ahmed. "ALTERNATIVE OPTIONS FOR SAFE DRINKING WATER IN ARSENIC AND SALINITY AFFECTED NARAIL DISTRICT, BANGLADESH". In 67th Annual Southeastern GSA Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018se-312995.

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Tarannum, T., N. Mirza e T. Ahmed. "Arsenic Removal Potential Using Naturally Occurring Iron in Groundwater: A Geo-Spatial Assessment of Household Potable Drinking Water in Bangladesh". In World Environmental and Water Resources Congress 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480618.015.

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Ahmed, Kazi Matin, Prosun Bhattacharya, Mattias von Brömssen, M. Jahid Alam, Md Tahmidul Islam, Sanjeev Sharma, Dara Johnston, Nargis Akter e Eheteshamul Russel Khan. "REVISITING ARSENIC MITIGATION IN BANGLADESH FOR DESIGNING AN INTEGRATED APPROACH FOR DIGITAL DECISION MAKING TO REDUCE EXPOSURE THROUGH DRINKING WATER". In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-355804.

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Bhattacharya, Prosun, Kazi Matin Ahmed, Mattias von Brömssen, Gunnar Jacks, Mohammed Hossain e M. Aziz Hasan. "INSTALLATION OF ARSENIC-SAFE AND LOW MANGANESE WELLS BY LOCAL DRILLERS FOR MEETING THE CHALLENGES OF SAFE DRINKING WATER IN BANGLADESH". In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-288040.

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Zaitseva, Nina, Olga Ustionova, Pavel Shur, Irina Leshkova e Elena Vlasova. "POPULATION HEALTH RISK ASSESSMENT ASSOCIATED WITH THE CONSUMPTION OF DRINKING WATER WITH A HIGH CONTENT OF ARSENIC IN GEOCHEMICAL PROVINCE". In 20th SGEM International Multidisciplinary Scientific GeoConference Proceedings 2020. STEF92 Technology, 2020. http://dx.doi.org/10.5593/sgem2020v/1.3/s02.25.

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Dey, Nepal C., Mahmood Parvez, Mahmood Parvez, Mir Raihanul Islam, Mir Raihanul Islam, Ratnajit Saha, Ratnajit Saha, Prosun Bhattacharya e Prosun Bhattacharya. "ASSESSING EXPOSURE TO DRINKING WATER CONTAMINATED BY ARSENIC AND IRON: POTENTIAL MEASURES FOR IMPROVING ACCESS TO SAFE AND AFFORDABLE WATER IN THE CLIMATE CHANGE VULNERABLE COASTAL AREA OF BANGLADESH". In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-357167.

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Relatórios de organizações sobre o assunto "Drinking water Arsenic content Bangladesh"

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Mathieu, Johanna L., Ashok J. Gadgil, Kristin Kowolik e Susan E. A. Addy. Removing Arsenic from Contaminated Drinking Water in Rural Bangladesh: Recent Fieldwork Results and Policy Implications. Office of Scientific and Technical Information (OSTI), setembro de 2009. http://dx.doi.org/10.2172/972648.

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Buchmann, Nina, Erica Field, Rachel Glennerster e Reshmaan Hussam. Throwing the Baby out with the Drinking Water: Unintended Consequences of Arsenic Mitigation Efforts in Bangladesh. Cambridge, MA: National Bureau of Economic Research, abril de 2019. http://dx.doi.org/10.3386/w25729.

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Shan, Yina, Praem Mehta, Duminda Perera e Yurissa Yarela. Cost and Efficiency of Arsenic Removal from Groundwater: A Review. United Nations University Institute for Water, Environment and Health, fevereiro de 2019. http://dx.doi.org/10.53328/kmwt2129.

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Hundreds of millions of people worldwide are exposed to arsenic-contaminated drinking water, leading to significant health complications, and social and economic losses. Currently, a wide range of technologies exists to remove arsenic from water. However, despite ongoing research on such technologies, their widespread application remains limited. To bridge this gap, this review aims to compare the effectiveness and costs of various arsenic remediation technologies while considering their practical applicability. A search conducted using the Medline and Embase databases yielded 31 relevant articles published from 1996 to 2018, which were categorized into laboratory and field studies. Data on the effectiveness of technologies in removing arsenic and associated costs were extracted and standardized for comparison as much as was possible, given the diversity of ways that studies report their key results. The twenty-three (23) technologies tested in laboratory settings demonstrated efficiencies ranging from 50% to ~100%, with the majority reaching relatively high removal efficiencies (>90%). Approximately half achieved the WHO standard of 10 µg/L. Laboratory studies used groundwater samples from nine (9) different countries – Argentina, Bangladesh, Cambodia, China, Guatemala, India, Thailand, the United States, and Vietnam. The fourteen (14) technologies tested in the field achieved removal efficiency levels ranging between 60% and ~99%, with ten (10) attaining above 90% removal efficiency. Of these, only five (5) reached established the WHO standard. Some of the technologies under-performed when their influent water contained excessive concentrations of arsenic. Only six (6) countries (Argentina, Bangladesh, Chile, China, India, and Nicaragua) were represented among the studies that implemented and tested technologies in the field, either at household or community level. For technologies tested in the laboratory, the cost of treating one cubic meter of water ranged from near-zero to ~USD 93, except for one technology which cost USD 299/m³. For studies conducted in the field, the cost of treating one cubic meter of water ranged from near-zero to ~USD 70. Key factors influencing the removal efficiencies and their costs include the arsenic concentration of the influent water, pH of the influent water, materials used, the energy required, absorption capacity, labour used, regeneration period and geographical location. Technologies that demonstrate high removal efficiencies when treating moderately arsenic-contaminated water may not be as efficient when treating highly contaminated water. Also, the lifetime of the removal agents is a significant factor in determining their efficiency. It is suggested that remediation technologies that demonstrate high arsenic removal efficiencies in a laboratory setting need to be further assessed for their suitability for larger-scale application, considering their high production and operational costs. Costs can be reduced by using locally available materials and natural adsorbents, which provide near zero-cost options and can have high arsenic removal efficiencies. A notable feature of many arsenic removal approaches is that some countries with resource constraints or certain environmental circumstances – like typically high arsenic concentrations in groundwater –aim to reach resultant arsenic concentrations that are much higher than WHO’s recommended standard of 10 µg/L. This report maintains that – while this may be a pragmatic approach that helps progressively mitigate the arsenic-related health risks – it is unfortunately not a sustainable solution. Continuing exposure to higher levels of arsenic ingestion remains harmful for humans. Hence arsenic-removal technology should only be seen efficient if it can bring the water to the WHO standard. A less radical approach effectively shifts the attention from the origin of the problem in addressing the impacts and postpones achieving the best possible outcome for populations. The quantitative summary of costs and effectiveness of arsenic remediation technologies reviewed in this report can serve as a preliminary guideline for selecting the most cost-effective option. It may also be used as an initial guideline (minimum standard) for summarising the results of future studies describing arsenic remediation approaches. Looking ahead, this study identifies four priority areas that may assist in commercializing wide-scale implementation of arsenic removal technologies. These include: i) focusing efforts on determining market viability of technologies, ii) overcoming practical limitations of technologies, iii) determining technology contextual appropriateness and iv) concerted effort to increase knowledge sharing in and across regions to accelerate the implementation of research on the ground. Overall, the current science and knowledge on arsenic remediation technologies may be mature enough already to help significantly reduce the global numbers of affected populations. The missing link for today’s arsenic removal challenge is the ability to translate research evidence and laboratory-level successes into quantifiable and sustainable impacts on the ground. Achieving this requires a concerted and sustained effort from policymakers, engineers, healthcare providers, donors, and community leaders.
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