Статті в журналах: "Valorisation de CO₂"

1

Lambert, Marc. "Caractérisation des co-produits du raffinage valorisation énergétique." Oléagineux, Corps gras, Lipides 13, no. 1 (January 2006): 5–8. http://dx.doi.org/10.1051/ocl.2006.3333.

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2

Alvarez-Guerra, Manuel, Jonathan Albo, Enrique Alvarez-Guerra, and Angel Irabien. "Ionic liquids in the electrochemical valorisation of CO2." Energy & Environmental Science 8, no. 9 (2015): 2574–99. http://dx.doi.org/10.1039/c5ee01486g.

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This work reviews the use of ionic liquids in electrochemical approaches for the valorisation of CO₂into value-added products, highlighting the beneficial role that ionic liquids can play in improving CO₂electrovalorisation processes.

3

Morais, Ana R. C., Ana C. Mata, and Rafal Bogel-Lukasik. "Integrated conversion of agroindustrial residue with high pressure CO2within the biorefinery concept." Green Chem. 16, no. 9 (2014): 4312–22. http://dx.doi.org/10.1039/c4gc01093k.

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4

Hauet, Jean-Pierre. "Captage, stockage et valorisation du CO 2 : un nouveau départ." Futuribles N° 455, no. 4 (June 16, 2023): 27–31. http://dx.doi.org/10.3917/futur.455.0027.

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Dans cet article, l’association Équilibre des énergies invite les pouvoirs publics à mettre en place une stratégie de développement à la hauteur des bénéfices que peuvent apporter les technologies de captage, stockage et valorisation du CO 2 — CCS / CCU en anglais (Carbon Capture and Storage / and Utilisation) — pour répondre aux enjeux climatiques. En effet, la sidérurgie, la chimie, la production de ciment, de produits pétroliers, de chaleur industrielle ou encore l’agroalimentaire sont autant de filières émettrices de CO 2 susceptible d’être capté pour être ensuite transporté, stocké et / ou valorisé, notamment dans des carburants de synthèse bas-carbone à destination des secteurs aérien et maritime. H.J.

5

Borges, Amadeu D. S., Miguel Oliveira, Bruno M. M. Teixeira, and Frederico Branco. "Co-Valorisation Energy Potential of Wastewater Treatment Sludge and Agroforestry Waste." Environments 11, no. 1 (January 9, 2024): 14. http://dx.doi.org/10.3390/environments11010014.

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The growing demand for sustainable and environment-friendly energy sources resulted in extensive research in the field of renewable energy. Biomass, derived from organic materials such as agricultural waste, forestry products, and wastewater treatment plant (WWTP) sludge, holds great potential as a renewable energy resource that can reduce greenhouse gas emissions and offer sustainable solutions for energy production. This study focused on diverse biomass materials, including sludge from WWTPs, forest biomass, swine waste, cork powder, and biochar. Chemical and physicochemical characterizations were performed to understand their energy potential, highlighting their elemental composition, proximate analysis, and calorific values. Results showed that different biomasses have varying energy content, with biochar and cork powder emerging as high-energy materials with net heating values of 32.56 MJ/kg and 25.73 MJ/kg, respectively. WWTP sludge also demonstrated considerable potential with net heating values of around 14.87 MJ/kg to 17.44 MJ/kg. The relationships between biomass compositions and their heating values were explored, indicating the significance of low nitrogen and sulphur content and favourable carbon, hydrogen, and moisture balances for energy production. Additionally, this study looked into the possibility of mixing different biomasses to optimize their use and overcome limitations like high ash and moisture contents. Mixtures, such as “75% Santo Emilião WWTP Sludge + 25% Biochar,” showed impressive net heating values of approximately 21.032 MJ/kg and demonstrated reduced emissions during combustion. The study’s findings contribute to renewable energy research, offering insights into efficient and sustainable energy production processes and emphasizing the environmental benefits of biomass energy sources with low nitrogen and sulphur content.

6

Nosek, Radovan, Michal Holubcik, Jozef Jandacka, and Lucia Radacovska. "Analysis of paper sludge pellets for energy utilization." BioResources 12, no. 4 (August 7, 2017): 7032–40. http://dx.doi.org/10.15376/biores.12.4.7032-7040.

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The pulp and paper industry in Europe produces over 11 million tons of waste per year. Given high landfill operational costs, thermal co-processing with biomass may be a viable management and valorisation option for such wastes. In this work, the analysis of biomass (wood sawdust), mixture of primary and secondary pulp mill sludge and their respective blends (50 wt.%, 60 wt.%, 70 wt.% of sludge) was assessed by thermogravimetric analysis. One of the possibilities to ensure valorisation of paper pulp mill sludge is its combustion in the form of pellets containing a different amount of sludge. Production of pellets samples was realised on laboratory experimental device. The measurements showed that increasing the content of paper sludge in the produced pellets reduced the calorific value and increased the ash content. This research deals also with the effect of paper sludge on the ash melting temperatures. The results indicated that a higher content of paper sludge in the pellets increased the ash melting temperatures. This advantage of paper sludge can be utilized in co-combustion of biomass with a low ash melting temperature.

7

Guzmán, Hilmar, Nunzio Russo, and Simelys Hernández. "CO2 valorisation towards alcohols by Cu-based electrocatalysts: challenges and perspectives." Green Chemistry 23, no. 5 (2021): 1896–920. http://dx.doi.org/10.1039/d0gc03334k.

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Advances and strategies of electrocatalytic CO₂ conversion to alcohols on Cu-based catalysts is assessed with an outlook of current challenges for a practical application of this technology.

8

Wang, Dongxing, Nor Edine Abriak, and Rachid Zentar. "Co-valorisation of Dunkirk dredged sediments and siliceous–aluminous fly ash using lime." Road Materials and Pavement Design 14, no. 2 (June 2013): 415–31. http://dx.doi.org/10.1080/14680629.2013.779309.

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9

Akacem, Mustapha, Rachid Zentar, Belkacem Mekerta, Abdelfeteh Sadok, and Hassan Moulay Omar. "Co-valorisation of Local Materials Tuffs and Dune Sands in Construction of Roads." Geotechnical and Geological Engineering 38, no. 1 (August 27, 2019): 435–47. http://dx.doi.org/10.1007/s10706-019-01035-4.

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10

Siles, J. A., F. Vargas, M. C. Gutiérrez, A. F. Chica, and M. A. Martín. "Integral valorisation of waste orange peel using combustion, biomethanisation and co-composting technologies." Bioresource Technology 211 (July 2016): 173–82. http://dx.doi.org/10.1016/j.biortech.2016.03.056.

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11

Contreras, M., M. J. Gázquez, S. M. Pérez-Moreno, M. Romero, and J. P. Bolívar. "Management and Valorisation of Wastes and Co-products from the TiO2 Pigment Industry." Waste and Biomass Valorization 7, no. 4 (February 26, 2016): 899–912. http://dx.doi.org/10.1007/s12649-016-9502-8.

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12

Fernandes, Diana M., Andreia F. Peixoto, and Cristina Freire. "Nitrogen-doped metal-free carbon catalysts for (electro)chemical CO2 conversion and valorisation." Dalton Transactions 48, no. 36 (2019): 13508–28. http://dx.doi.org/10.1039/c9dt01691k.

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13

HADIDI, M., B. BAHLAOUAN, S. ASSABA, F. Z. OZI, A. FATHI, S. EL ANTRI, and N. BOUTALEB. "Optimisation de la production du biogaz par les plans de mélanges de déchets agro-industriels et biofertilisation par les résidus de codigestion." Techniques Sciences Méthodes, no. 10 (October 20, 2020): 53–66. http://dx.doi.org/10.36904/tsm/202010053.

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L’objectif de cette étude est de proposer, par approche intégrée, une voie de gestion des déchets agro-industriels : halieutique, avicole, agrumicole. La valorisation énergétique du point de vue de la production de biogaz et aussi la valorisation du digestat qui en découle sont étudiées. Dix mixtures sont établies dans le cadre d’un plan simplexe-centroïde, leur digestion anaérobie dure environ 5000 min, suffisante pour atteindre la stabilité. L’évolution de plusieurs paramètres physico-chimiques tels que le pH, la conductivité, la matière sèche est déterminée. La conversion du carbone organique total (COT), le phosphore (P) et l’azote (NT) sont étudiés et modélisés par les surfaces d’isoréponses. Les contrôles microbiologiques pour vérifier l’hygiénisation des digestats sont menés. Le volume de biogaz produit pour les différents mélanges est mesuré en fonction du temps en utilisant la méthode du liquide déplacé. Finalement, le digestat est valorisé dans la fertilisation des sols agricoles, pour cela des tests de fertilisation sont ainsi conduits sur des cultures de poivrons (Capsicum annum). Les résultats montrent qu’il est possible de générer, après processus de digestion anaérobie optimale, un digestat, intéressant pour une application dans la fertilisation des sols agricoles, hygiénique par l’absence des micro-organismes d’altération, riche en azote, phosphore, potassium, caractérisé par un pH idéal pour la culture de poivrons.

14

Hassan, Soulayma, Tien Ngo, and Andrew S. Ball. "Valorisation of Sugarcane Bagasse for the Sustainable Production of Polyhydroxyalkanoates." Sustainability 16, no. 5 (March 6, 2024): 2200. http://dx.doi.org/10.3390/su16052200.

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With the world shifting towards renewable and sustainable resources, polyhydroxyalkanoates (PHAs) have attracted significant interest as an alternative to synthetic plastics. While possessing promising properties suitable for various applications, the production of PHAs has not yet reached a global commercial scale. The main reason is the high cost of production, which represents a major limitation. Sugarcane bagasse (SCB) is an abundant lignocellulosic waste around the world. Its use to produce PHA enhances the feasibility of producing PHAs at commercial scale. However, SCB requires pretreatment and hydrolysis steps to release the sugars prior to the microbial fermentation. The cost associated with these steps poses additional challenges for large-scale production. Another challenge is the release of inhibitors during the pretreatment process which can result in a low PHA yield. The development of a low cost, co-culture strategy for the bioconversion of SCB into PHAs, can represent a pivotal step towards the large-scale production of bioplastics. This review highlights the advancements made in recent years on the microbial production of PHA using SCB as potential feedstock, with a proposed biological strategy and circular economy model.

15

Chery, Jean-Pierre, Marie Gradeler, and Vincent Bonnal. "NAMO Géoweb." Revue Internationale de Géomatique 31, no. 3-4 (July 2022): 355–76. http://dx.doi.org/10.3166/rig31.355-376.

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Les besoins de valoriser et de partager des informations génériques et originales de différents projets de recherche, ont conduit à concevoir une plateforme géoweb dédiée, dénommée NAMO. Sa conception utilise des fonctionnalités ouvertes, libres et gratuites qui montrent leur souplesse dans une démarche agile et itérative. C’est en particulier le développement de deux dimensions de valorisation et de positionnement en géoweb 2.0 qui est souligné : la cartographie narrative et la modélisation systémique. Les dispositifs d’usage de l’information géographique, en particulier dans les démarches de co-construction et de science ouverte, peuvent ainsi être mieux outillés.

16

Pastor Pérez, Ana, David Barreiro Martínez, Eva Parga-Dans, and Pablo Alonso González. "Democratising Heritage Values: A Methodological Review." Sustainability 13, no. 22 (November 12, 2021): 12492. http://dx.doi.org/10.3390/su132212492.

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This paper explores the transformation of heritage values from a critical perspective. The de-authorising conceptual shift in cultural heritage has not always been accompanied by a revitalisation of the dynamics of valorisation. To achieve the integration of multivocal discourses in sustainable preservation strategies, experts and academics need to work with methods that enable this to happen. This article presents a methodological analysis articulated through three different case studies that bring new experiences regarding the decolonisation of knowledge in the field of heritage values, addressing different aspects of the social dimension of cultural heritage. The first deals with contestation processes associated with productive winemaking traditions in the Rias Baixas, Galicia, Spain. The second case addresses the rebellious Paris of the Commune and the narratives associated with the valorisation of the traces that it has left in the city’s landscape. Finally, the third case analyses the values that come into play when citizens’ participation governs the transformation of an archaeological site in Barcelona. To conclude, we reflect on the idea of sustainability as a way of listening to, sharing and co-creating knowledge connected to communities.

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Saïdi-Boulahia, Amina, Sabah Abada, and Meryem Saber. "Valorisation des déchets organiques ménagers et les déjections bovines par la méthanisation." Journal of Renewable Energies 21, no. 4 (December 31, 2018): 537–43. http://dx.doi.org/10.54966/jreen.v21i4.712.

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La digestion anaérobie de la fraction organique des déchets ménagers est l’une des méthodes de traitement et de valorisation de ces déchets. En effet cette valorisation, offre la possibilité de combiner le traitement de ces déchets et la production d’une énergie renouvelable qui est le biogaz. Dans notre étude, nous avons contribué à l’étude de la production de biogaz à partir de la co-digestion de la fraction organique des déchets ménagers avec les déjections bovines. Les deux substrats ont été introduits dans le digesteur après un pré-mélange à raison de 5 % de déchets ménagers et 10 % de bouse de vache. La fermentation de cette expérimentation a été menée en mode batch (alimentation discontinue) tout en assurant l’anaérobiose avec maintien de la température dans la plage mésophile. Nous avons procédé à la mesure des paramètres de stabilité, tels que le pH, le potentiel d’oxydo-réduction et les acides gras volatils (AGV). Les valeurs de ces paramètres indiquent le bon déroulement du processus de digestion qui a permis la production d’une quantité évaluée à 870 ml de biogaz durant un temps d’opération de 45 jours et pour une masse de 1000 grammes de déchets.

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Giordana, Alessia, Cristina Pizzolitto, Elena Ghedini, Michela Signoretto, Lorenza Operti, and Giuseppina Cerrato. "Innovative Synthetic Approaches for Sulphate-Promoted Catalysts for Biomass Valorisation." Catalysts 13, no. 7 (July 12, 2023): 1094. http://dx.doi.org/10.3390/catal13071094.

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In the present research, we report on an innovative and quick procedure for the synthesis of metal oxides: a sol-gel procedure which is followed by two steps that are assisted by microwaves (MW) heating. First, MW heating promotes gel drying and successively permits the calcination of the xerogel in a few minutes, using a susceptor that rapidly reaches high temperatures. The procedure was employed for the synthesis of zirconium dioxide (ZrO2), and MW-assisted calcination enables the collection of tetragonal ZrO2, as confirmed by different experimental techniques (PXRD, HR-TEM and Raman spectroscopy). Using this MW-assisted sol-gel procedure, a promoted sulphated zirconia (SZ) has been obtained. Both the nature and strength of SZ surface acidity have been investigated with FTIR spectroscopy using CO and 2,6-dimethylpyridine (2,6-DMP) as probe molecules. The obtained materials were tested as catalysts in acid hydrolysis of glucose to give 5-(hydroxymethyl)furfural (5-HMF). One of the obtained catalysts exhibited a better selectivity towards 5-HMF with respect to SZ material prepared by a classical precipitation route, suggesting that this procedure could be employed to obtain a well-known catalyst with a less energy-consuming procedure. Catalytic results also suggest that good selectivity to 5-HMF can be achieved in aqueous media in the presence of weak Lewis and Brønsted sites.

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Ramos, João S., and Ana F. Ferreira. "Techno-economic analysis and life cycle assessment of olive and wine industry co-products valorisation." Renewable and Sustainable Energy Reviews 155 (March 2022): 111929. http://dx.doi.org/10.1016/j.rser.2021.111929.

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20

Pena, Luis, Margarida Oliveira, Rita Fragoso, and Elizabeth Duarte. "Potential of Duckweed for Swine Wastewater Nutrient removal and Biomass Valorisation through Anaerobic Co-digestion." Journal of Sustainable Development of Energy, Water and Environment Systems 5, no. 2 (June 2017): 127–38. http://dx.doi.org/10.13044/j.sdewes.d5.0137.

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21

Contreras Moreno, Viviana, Alain Ledoux, Lionel Estel, Salim Derrouiche, and Marie-Pierre Denieul. "Valorisation of CO 2 with epoxides: Influence of gas/liquid mass transfer on reaction kinetics." Chemical Engineering Science 170 (October 2017): 77–90. http://dx.doi.org/10.1016/j.ces.2017.01.050.

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22

Garcia Delahaye, Sylvia, Lavinia Johnson, Khaled Ibrahim Baba, Loresa Mulaku, Marguerite Guhirwa, Mélissa Djabrouhou, Nasrin Abbi, and Francis Loser. "La pauvreté infantile à l’aune des recherches participatives artistiques en travail social : la voix des jeunes co-chercheur-e-s." Écrire le social N° 5, no. 1 (September 12, 2023): 72–86. http://dx.doi.org/10.3917/esra.005.0072.

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Cette contribution s’intéresse à la problématique de la pauvreté infantile à partir de l’analyse des résultats intermédiaires d’une recherche en cours menée avec de jeunes co-chercheur-e-s. L’absence de la prise en compte de la parole des enfants et des jeunes dans les critères et les dispositifs actuels visant à appréhender la pauvreté en Suisse est au cœur des choix méthodologiques de cette recherche. Cet article propose une réflexion sur la place des jeunes co-chercheur-e-s dans la définition et l’analyse de la pauvreté et des inégalités qui lui sont associées, ainsi que sur les conditions de construction de connaissances nouvelles sur cette thématique, au moyen de la valorisation de leur voix et des productions artistiques (photographies et vidéos) de jeunes participant-e-s.

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Basnett, Pooja, Elena Marcello, Barbara Lukasiewicz, Rinat Nigmatullin, Alexandra Paxinou, Muhammad Haseeb Ahmad, Bhavana Gurumayum, and Ipsita Roy. "Antimicrobial Materials with Lime Oil and a Poly(3-hydroxyalkanoate) Produced via Valorisation of Sugar Cane Molasses." Journal of Functional Biomaterials 11, no. 2 (April 10, 2020): 24. http://dx.doi.org/10.3390/jfb11020024.

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A medium chain-length polyhydroxyalkanoate (PHA) was produced by Pseudomonas mendocina CH50 using a cheap carbon substrate, sugarcane molasses. A PHA yield of 14.2% dry cell weight was achieved. Chemical analysis confirmed that the polymer produced was a medium chain-length PHA, a copolymer of 3-hydroxyoctanoate and 3-hydroxydecanoate, P(3HO-co-3HD). Lime oil, an essential oil with known antimicrobial activity, was used as an additive to P(3HO-co-3HD) to confer antibacterial properties to this biodegradable polymer. The incorporation of lime oil induced a slight decrease in crystallinity of P(3HO-co-3HD) films. The antibacterial properties of lime oil were investigated using ISO 20776 against Staphylococcus aureus 6538P and Escherichia coli 8739, showing a higher activity against the Gram-positive bacteria. The higher activity of the oil against S. aureus 6538P defined the higher efficiency of loaded polymer films against this strain. The effect of storage on the antimicrobial properties of the loaded films was investigated. After one-year storage, the content of lime oil in the films decreased, causing a reduction of the antimicrobial activity of the materials produced. However, the films still possessed antibacterial activity against S. aureus 6538P.

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Merle, Aurélie. "Comprendre et gérer un programme de Customisation de Masse." Décisions Marketing N° 59, no. 3 (August 1, 2010): 39–48. http://dx.doi.org/10.3917/dm.059.0039.

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Les offres de Customisation de Masse (CM) ont donné lieu à des succès mais aussi à plusieurs échecs. Dans ce contexte, cet article apporte une réflexion sur la manière d’accroître la performance commerciale de telles offres. Une définition du concept est proposée pour le différencier d’autres stratégies de personnalisation. Puis, les sources de valorisation et coûts perçus de la CM sont explorés. Des recommandations sont ensuite formulées pour jouer sur la valeur perçue en se focalisant sur la gestion de l’expérience de co-design. Finalement, quatre points de réflexion marketing sont proposés aux managers souhaitant développer une offre de CM.

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Trovato, Maria Rosa, Paolo Micalizzi, and Salvatore Giuffrida. "Assessment of Landscape Co-Benefits in Natura 2000 Site Management Plans." Sustainability 13, no. 10 (May 19, 2021): 5707. http://dx.doi.org/10.3390/su13105707.

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The concept of co-benefits developed in the context of climate change policies can be extended to the strategies aimed at protecting natural resources. A co-effects-based policy approach proposes a multidimensionality capable of strengthening its effectiveness and supporting a co-generative development model aimed at promoting virtuous forms of territorial capital valorisation. The study aimed to evaluate the landscape co-benefits generated by the Natura 2000 networks, achieving a measure of efficiency of the policies and performance of the Management Plan, with reference to the “Timpa di Acireale” site. CVM and TCM were used for the estimation of landscape co-benefits. For the evaluation of the efficiency of the policies and the performance of the Plan, some economic-financial criteria were implemented. With reference to the user-citizen, the local tourist and the supralocal tourist, flows of annual co-benefits of EUR 754,764, EUR 99,678.12 and EUR 2,276.39, respectively, were estimated. The analyses of the efficiency of the policies and the performance of the Plan provided sufficient results. In conclusion, the lack of an adequate level of infrastructure for all users’ profiles reduces the ability to generate co-benefits for the users themselves and more significantly for tourists in a territory with a strong tourism vocation.

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Sopelana, Amaia, Asier Oleaga, Juan José Cepriá, Karmen Fifer Bizjak, Helena Paiva, Francisco-Javier Rios-Davila, Adriana H. Martinez, and Antonio Cañas. "Enhancing Circular Business Model Implementation in Pulp and Paper Industry (PPI): A Phase-Based Implementation Guide to Waste Valorisation Strategies." Sustainability 15, no. 24 (December 6, 2023): 16584. http://dx.doi.org/10.3390/su152416584.

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Innovation in the circular economy (CE) and the deployment of effective circular business models (CBM) have attracted significant attention in times of growing natural resource scarcity. Despite this widespread interest, significant challenges remain between theoretical innovations and effective CBM implementation in any industrial sector where companies pursue cost-saving opportunities through waste valorisation strategies. Since current methods mislead in terms of the real limitations to designing feasible novel products and services under a circular economy, this study proposes exploring determinants underpinning the organisational resilience of CBMs under a resource efficiency strategy through three case studies. As a result of a co-creation process, the implementation of a CBM framework was built upon empirical data and, thence, a phase-based implementation guide was laid out to assist companies in designing and implementing innovative CBM dealing with the complexity of innovative waste valorisation strategies between the PPI and construction sectors. Relevant findings on managerial and policy recommendations encountered along the demo stage are provided in this paper favouring an effective implementation of CE strategies: the role of technological and non-technological aspects within the CBM, the perspective of the ecosystem and its value proposition, and specific guidelines for the different phases of CBM life cycle.

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Moliner, Cristina, Dario Bove, and Elisabetta Arato. "Co-Incineration of Rice Straw-Wood Pellets: A Sustainable Strategy for the Valorisation of Rice Waste." Energies 13, no. 21 (November 3, 2020): 5750. http://dx.doi.org/10.3390/en13215750.

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Agricultural activities produce an estimated amount of 32.7 MToe/year of residues in EU countries. They are mostly disposed in landfills, incinerated without any control, or abandoned in fields, causing severe impacts on human health and environment. Rice is one of the most consumed crops worldwide with an annual production of 782 million tons according to the Food and Agriculture Organization of the United Nations database. In this context, the EU-funded project LIFE LIBERNITRATE promotes the use of renewable residual sources (i.e., rice straw) to obtain new materials with an added value. The methodology is based on the incineration of rice straw in an own-designed and constructed valorization system. Rice straw/wood pellets are burned in optimized conditions to produce a maximized quantity of ashes with high silica content. These materials will be then used to treat water polluted with nitrates, representing an optimal example of circular economy strategy. In this work, the own-designed valorization unit is described, with special focus on its main constituting elements. The theoretical study of the co-incineration of rice straw and wood pellets identified the optimised combustion conditions. Experimental tests using the theoretical inputs confirmed the most adequate operational conditions (10 g rice straw pellets/min + 10 g wood pellets/min, 6–7 Nm3/h of air, T = 500 °C) and helped in the definition of improvements on the experimental plant.

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Tsigkou, Konstantina, Panagiota Tsafrakidou, Alexandros Kopsahelis, Dimitris Zagklis, Constantina Zafiri, and Michael Kornaros. "Used disposable nappies and expired food products valorisation through one- & two-stage anaerobic co-digestion." Renewable Energy 147 (March 2020): 610–19. http://dx.doi.org/10.1016/j.renene.2019.09.028.

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Prajitna, Aloysius Gonzaga Holy, and Mochammad Chaerul. "Valorisation of Rice Husk and Bubble Wrap Plastic Waste through Co-Torrefaction to Optimise Biochar Production." Jurnal Ilmu Lingkungan 22, no. 2 (November 8, 2023): 383–92. http://dx.doi.org/10.14710/jil.22.2.383-392.

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Rice husk is one of the highest generated agricultural waste estimated to be 11.1-13.8 million tons in Indonesia in 2021. This quantity makes rice husk a potential biomass for conversion into energy to minimize the negative impacts of current processing methods, such as open-burning and mulching. Torrefaction was conducted at 300°C for 30 minutes in this study to enhance the characteristics of biomass fuel by producing biochar with improved combustion properties. The biochar produced from torrefaction of rice husk has a calorific value of 15.04 MJ/kg with a volatile matter content of 42.94% and fixed carbon content of 17.94%. Despite this improvement compared to raw rice husk, this biochar tends to have a relatively high mass loss, with a mass yield of only 54%. Therefore, the addition of LDPE plastic feedstock in the form of bubble wrap was carried out up to 50% of the feedstock mass, resulting in further optimization at the RH50 variation, which increased the calorific value to 19.98 MJ/kg and mass yield to 72%. These changes were statistically tested and found to be significant, indicating that torrefaction is a promising technology for rice husk processing, and bubble wrap in this study can significantly contribute to enhancing the characteristics of rice husk as a renewable fuel source.

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Pastor-Pérez, Laura, Mihir Shah, Estelle le Saché, and Tomas Ramirez Reina. "Improving Fe/Al2O3 Catalysts for the Reverse Water-Gas Shift Reaction: On the Effect of Cs as Activity/Selectivity Promoter." Catalysts 8, no. 12 (December 3, 2018): 608. http://dx.doi.org/10.3390/catal8120608.

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The conversion of CO2 into CO via the Reverse Water–Gas Shift (RWGS) reaction is a suitable route for CO2 valorisation. Fe-based catalysts are highly active for this reaction, but their activity and selectivity can be substantially boosted by adding Cs as a promoter. In this work we demonstrate that Cs modifies the redox behaviour and the surface chemistry of the iron-based materials. The metallic dispersion and the amount of metallic Fe centres available for the reaction depends on Cs loading. 5 wt. % of Cs is an optimum amount of dopant to achieve a fair activity/selective balance. Nevertheless, depending on the RWGS reactor operational temperature, lower concentrations of Cs also lead to acceptable catalytic performance. Along with the excellent activity of the prepared materials this work showcases their robustness for long-term runs and the strong impact of H2/CO ratio in the overall catalytic performance.

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Farniga, Analdi, Phimrak Khaokhajorn, and Songsak Wattanachaisaereekul. "Cassava Bagasse as a Low-Cost Substrate for Cellulase and Organic Acid Production Using Co-Cultivated Fungi." Fermentation 10, no. 1 (December 22, 2023): 14. http://dx.doi.org/10.3390/fermentation10010014.

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Cassava bagasse has great potency as a substrate in the biorefinery industry. This paper proposes the valorisation of cassava bagasse into organic acids by cellulase through the co-cultivation of Aspergillus violaceofuscus and Trichoderma reesei RUT-C30 at the ratio 1:1. The optimised conditions for β-glucosidase production under submerged fermentation were pH 4.50, a tween 80 concentration of 0.05% (v/v), and a spore concentration of 7.18 × 107 spores·mL−1. We found base steam cassava bagasse (BSCB) to have high cellulose content, making it possible to replace avicel phosphoric acid swollen cellulose (PASC) as a substrate. The co-cultivation with the BSCB substrate had higher levels of β-glucosidase (1.72-fold), cellobiohydrolase (2.83-fold), and endoglucanase (2.82-fold) activity compared to that of the avicel PASC substrate. Moreover, acetic acid (7.41 g·L−1), citric acid (3.54 g·L−1), gluconic acid (0.30 g·L−1), and malic acid (0.37 g·L−1) were detected in the BSCB crude extract. These results demonstrate the considerable prospects of the A. violaceofuscus and T. reesei RUT-C30 co-cultivation approaches in the biorefinery industry.

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Parrinello, S., A. Sanseverino, and H. Fu. "HBIM MODELLING FOR THE ARCHITECTURAL VALORISATION VIA A MAINTENANCE DIGITAL ECO-SYSTEM." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-M-2-2023 (June 26, 2023): 1157–64. http://dx.doi.org/10.5194/isprs-archives-xlviii-m-2-2023-1157-2023.

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Abstract. The present contribution falls within the framework of the actions envisaged by the "SMART Bethlehem – Sustainable Management And Renewal of Technology in the City of Bethlehem" (2022 – ongoing) research project, scientifically coordinated by the University of Pavia and co-founded by the Italian Agency for Cooperation and Development (AICS). Among the main objectives of the cooperation project is the sustainable urban and territorial development of the Bethlehem area by means of multi-scalar activities, mainly focusing on refurbishment and energy optimisation of a few relevant municipality buildings. A test case implementation of the HBIM methodology was then carried out on the Peace Center, an iconic building facing the "Manger Square" in close proximity to the "Nativity Church", aiming to validate the proposed systematisation of a scan-to-BIM approach focused on the development of an optimised data repository for the planned operation and maintenance activities. An ECO-Systemic workflow is presented, organised in five recursive steps. Starting from a SLAM-TLS integrated digital survey (3DS), the federated sub-models that comprise the overall project are geo-referenced (GEO) within a shared coordinate system (FSC) environment, thereby providing the basis for the subsequent architectural modelling of the built asset (ARC) and the associated enhancement of the level of information (LOI).

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Kinnunen, Päivi, Jarno Mäkinen, Marja Salo, Ratana Soth, and Konstantinos Komnitsas. "Efficiency of Chemical and Biological Leaching of Copper Slag for the Recovery of Metals and Valorisation of the Leach Residue as Raw Material in Cement Production." Minerals 10, no. 8 (July 23, 2020): 654. http://dx.doi.org/10.3390/min10080654.

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Copper slags produced in vast quantities in smelting operations could be considered as secondary material sources instead of stockpiling them in landfills. This study investigates the recovery of valuable metals from copper slag and the valorisation of the leach residue as construction material in line with the principles of a circular economy. By taking into account that the environmental characterization of the as-received copper slag did not allow its disposal in landfills without prior treatment, chemical and biological leaching were tested for the recovery of metals. Pre-treatment with acids, namely HNO3 and H2SO4, resulted in the extraction of several target metals and the production of an almost inert waste. Despite the clearly better oxidative conditions prevailing in the bioleaching reactors, chemical leaching resulted in the higher dissolution of Cu (71% vs. 51%), Co (70% vs. 36%), and Zn (65% vs. 44%). The acid consumption was much lower during the bioleaching experiments compared to the chemical leaching. The bioleach residue was suitable for its use as supplementary cementitious material, showing a better performance than the reference sample without causing any detrimental effects to the calcium aluminate cement (CAC) quality. The complete valorisation of copper slags is expected to improve the economics of the process, by avoiding landfill costs and producing saleable products with high added value.

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Nielsen, Birthe Vejby, John James Milledge, Heidi Hertler, Supattra Maneein, Md Mahmud Al Farid, and Debbie Bartlett. "Chemical Characterisation of Sargassum Inundation from the Turks and Caicos: Seasonal and Post Stranding Changes." Phycology 1, no. 2 (December 13, 2021): 143–62. http://dx.doi.org/10.3390/phycology1020011.

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The Turks and Caicos Islands (TCI) have been affected by sargassum inundations, with impacts on the economy and environment. Sargassum removal can be costly, but sargassum use and valorisation may generate income and offset environmental damage. A significant barrier to the valorisation of sargassum is insufficient knowledge of its chemical makeup, as well as its seasonal variation and decay after stranding. The chemical characterisation of mixed sargassum and its constituent species and morphotypes (S. natans I, S.natans VIII and S. fluitans) collected from TCI between September 2020 and May 2021 and changes in the composition of sargassum decaying (over 147 days) were studied. High ash (24.61–51.10% dry weight (DW)) and arsenic (49–217 mg kg−1) could severely hamper the use of this seaweed for food or feed purposes. Although there was some reduction in arsenic levels in decaying sargassum, levels remained high (>49 mg kg−1). Biomethane production by anaerobic digestion (AD) is a potential option. Nevertheless, the exploitation of sargassum for biogas, either fresh or as it decays on the beach, is challenging due to low methane yields (<42% of theoretical potential). Pre-treatment or co-digestion with other waste may be options to improve yield. The metal sorption ability of sargassum, which can be problematic, makes biosorption of pollutants an option for further research.

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Sharma, Hari Bhakta, Sagarika Panigrahi, Kumar Raja Vanapalli, V. R. Sankar Cheela, Saikrishna Venna, and Brajesh Dubey. "Study on the process wastewater reuse and valorisation during hydrothermal co-carbonization of food and yard waste." Science of The Total Environment 806 (February 2022): 150748. http://dx.doi.org/10.1016/j.scitotenv.2021.150748.

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Vamvuka, Despina, Agapi Teftiki, and Stelios Sfakiotakis. "Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes." World Journal of Environmental Biosciences 11, no. 1 (2022): 37–44. http://dx.doi.org/10.51847/2fioejsu7l.

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Santos-Ballardo, David U., Xavier Font-Segura, Antoni Sánchez Ferrer, Raquel Barrena, Sergio Rossi, and Angel Valdez-Ortiz. "Valorisation of biodiesel production wastes: Anaerobic digestion of residual Tetraselmis suecica biomass and co-digestion with glycerol." Waste Management & Research 33, no. 3 (March 2015): 250–57. http://dx.doi.org/10.1177/0734242x15572182.

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Caetano, N. S., D. Caldeira, A. A. Martins, and T. M. Mata. "Valorisation of Spent Coffee Grounds: Production of Biodiesel via Enzymatic Catalysis with Ethanol and a Co-solvent." Waste and Biomass Valorization 8, no. 6 (January 4, 2017): 1981–94. http://dx.doi.org/10.1007/s12649-016-9790-z.

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Angelino, G. "Etude d'un echangeur á contact direct co-courant pour la valorisation thermodynamique de la géothermie moyenne enthalpie." Geothermics 17, no. 4 (January 1988): 671–72. http://dx.doi.org/10.1016/0375-6505(88)90052-1.

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Puentes, Bastián, Fidel Vallejo, and Serguei Alejandro-Martín. "Synergistic Effects and Mechanistic Insights into the Co-Hydropyrolysis of Chilean Oak and Polyethylene: Unlocking the Potential of Biomass–Plastic Valorisation." Polymers 15, no. 12 (June 20, 2023): 2747. http://dx.doi.org/10.3390/polym15122747.

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This study employed a hydrogen atmosphere in an analytical reactor to investigate the thermochemical transformation of Chilean Oak (ChO) and polyethylene. Thermogravimetric assays and compositional analyses of the evolved gaseous chemicals provided valuable insights regarding the synergistic effects during the co-hydropyrolysis of biomass and plastics. A systematic experimental design approach assessed the contributions of different variables, revealing the significant influence of the biomass/plastic ratio and hydrogen pressure. Analysis of the gas phase composition showed that co-hydropyrolysis with LDPE resulted in lower levels of alcohols, ketones, phenols, and oxygenated compounds. ChO exhibited an average oxygenated compound content of 70.13%, while LDPE and HDPE had 5.9% and 1.4%, respectively. Experimental assays under specific conditions reduced ketones and phenols to 2–3%. Including a hydrogen atmosphere during co-hydropyrolysis contributes to enhanced reaction kinetics and reduced formation of oxygenated compounds, indicating its beneficial role in improving reactions and diminishing the production of undesired by-products. Synergistic effects were observed, with reductions of up to 350% for HDPE and 200% for LDPE compared to the expected values, achieving higher synergistic coefficients with HDPE. The proposed reaction mechanism provides a comprehensive understanding of the simultaneous decomposition of biomass and polyethylene polymer chains, forming valuable bio-oil products and demonstrating the how the hydrogen atmosphere modulates and influences the reaction pathways and product distribution. For this reason, the co-hydropyrolysis of biomass–plastic blends is a technique with great potential to achieve lower levels of oxygenated compounds, which should be further explored in subsequent studies to address scalability and efficiency at pilot and industrial levels.

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Floričić, Tamara, and Ketrin Jurica. "Wine Hotels—Intangible Heritage, Storytelling and Co-Creation in Specific Tourism Offer." Heritage 6, no. 3 (March 12, 2023): 2990–3004. http://dx.doi.org/10.3390/heritage6030159.

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This paper researches aspects of affirmation of intangible heritage and the valorisation of viniculture through themed wine hotels that offer integral wine experiences as well as satisfy tourists’ needs for individualism. This paper aims to explore the intangible cultural heritage through thematic wine hotels and identify special tourism products and experiences created via storytelling and co-creation that impact its competitiveness. The research design includes the selection process of wine hotels in the international context, a comparative analysis of themed hotel offers online promotions, and original research of themed offers. Data is analysed using qualitative and quantitative methodology, including statistical processing. Developed under the concept of wine tourism, themed accommodation facilities—wine hotels—are the core value in the creation of an integral wine experience. However, the research results indicate that international wine hotels do not affirm all the potential and possibilities of creating specific products and do not realise their full competitiveness. The results form a platform for the proposal of a competitiveness model, which synergically affirms hotel core competencies, expressed through tangible and intangible features, sustainability, experiences, co-creation, special advantages and marketing mix elements. Recommendations for wine hotels’ new competitiveness represent an additional contribution of the paper and point to new considerations directed towards innovations, creativity and affirmation of intangible heritage.

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Wu, Yi-Hsuan, Denis A. Kuznetsov, Nicholas C. Pflug, Alexey Fedorov, and Christoph R. Müller. "Solar-driven valorisation of glycerol on BiVO4 photoanodes: effect of co-catalyst and reaction media on reaction selectivity." Journal of Materials Chemistry A 9, no. 10 (2021): 6252–60. http://dx.doi.org/10.1039/d0ta10480a.

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Ahmad Zamri, M. F. M., A. Akhiar, M. E. Mohd Roslan, M. H. Mohd Marzuki, J. Md Saad, and A. H. Shamsuddin. "Valorisation of organic fraction municipal solid waste via anaerobic co-digestion of Malaysia tropical fruit for biogas production." IOP Conference Series: Earth and Environmental Science 476 (June 11, 2020): 012077. http://dx.doi.org/10.1088/1755-1315/476/1/012077.

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Bhajani, Shilpa S. "Review: Factors Affecting Biogas Production." International Journal for Research in Applied Science and Engineering Technology 10, no. 2 (February 28, 2022): 79–88. http://dx.doi.org/10.22214/ijraset.2022.40192.

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Abstract: Bioenergy, a renewable energy holds a promising solution to the most pressing problems of energy crises and waste treatment, disposal and thereby creating a circular economy. There is a need to exploit biogas potential to the fullest to enhance its productivity and utilize it for heating, cooling, generating electricity and also for transportation. Valorisation of the municipal solid waste (MSW), agricultural non-fodder waste, sewage sludge, animal waste, etc., for energy production (biogas), material recovery (fertilizers) and waste elimination (waste treatment) attracts the attention of the researchers. This research review highlights the crucial parameters like pH, temperature, OLR, HRT, etc. affecting the biogas productivity and provide insights to run the digesters at optimum conditions thus optimizing the biogas yield. Keywords: Biogas, Bio-energy, Anaerobic Digestion, Co-digestion

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Bonacini, Elisa. "#iziTRAVELSicilia, a Participatory Storytelling Project/Process." International Journal of Interactive Communication Systems and Technologies 7, no. 2 (July 2017): 24–52. http://dx.doi.org/10.4018/ijicst.2017070102.

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Launched in May 2016 on the izi.TRAVEL platform, the participatory project #iziTRAVELSicilia has been recognized as a best practice of digital promotion and valorisation through storytelling and participatory processes. Involving thousands of people, in just over two years over 170 audioguides have been produced. #iziTRAVELSicilia has become a real model of participation in the co-creation of cultural values, by practicing the principles set out by the Faro Convention, so revealing a serious impact on civil society made by this platform and its technologies. This project was soon transformed into a participatory process, involving just all the “heritage communities” cited by the Faro Convention and transforming them into smart heritage communities, from regional and local authorities to schools, without distinction of greatness and importance of heritage, but with the common aim of enhancing it.

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Vanderghem, Caroline, Nicolas Jacquet, and Aurore Richel. "Can Lignin Wastes Originating From Cellulosic Ethanol Biorefineries Act as Radical Scavenging Agents?" Australian Journal of Chemistry 67, no. 11 (2014): 1693. http://dx.doi.org/10.1071/ch14074.

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Lignin is a co-product from the biorefinery and paper industries. Its non-energetic valorisation remains a field of extensive research and development. In this perspective, this study was undertaken to evaluate the radical scavenging ability of selected herbaceous lignins. These lignins, extracted from either Miscanthus (Miscanthus × giganteus) or switchgrass (Panicum virgatum L.), were selected as benchmarks for this study based on their chemical structure and average molecular weight. These technical lignins, which are side-products in the bioethanol production process, displayed a moderate antioxidant activity as evaluated by the 1,1-diphenyl-2-picrylhydrazil free radical scavenging test system. A correlation between the radical scavenging properties and the molecular features is proposed and discussed. Infrared spectroscopy was employed as a straightforward qualitative prediction tool for assessing the radical scavenging capacity.

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Viksne, Gustavs, Ilze Vamža, Viktorija Terjanika, Tereza Bezrucko, Jelena Pubule, and Dagnija Blumberga. "CO₂ Storage in Logging Residue Products with Analysis of Energy Production Scenarios." Environmental and Climate Technologies 26, no. 1 (January 1, 2022): 1158–68. http://dx.doi.org/10.2478/rtuect-2022-0087.

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Abstract Woody logging residues produced by logging activities are currently an underutilised resource that is mainly burned for energy production or left in the forest to decay, thus releasing CO2 into the atmosphere. This resource could be used to manufacture long-lasting products and store a significant amount of CO2, promoting CO2 valorisation in rural areas. In this study, potential use for logging residues is proposed – the production of low-density wood fibreboard insulation panels. The new material’s potential properties, manufacturing method and combined heat and power (CHP) plant parameters were proposed. The potential climate benefits of the new product were analysed using various biogenic carbon accounting methods. As energy production for manufacturing can be a significant source of emissions, possible energy production scenarios were analysed for manufacturing the product. However, an economically and environmentally viable energy production scenario should be chosen. By conducting a multi-criteria analysis, three possible energy production scenarios were analysed – wood biomass CHP plant, a natural gas CHP plant and a standalone wood biomass combustion plant combined with Solar photo-voltaic (PV) panels. The scenarios were analysed in terms of technological, economic, and environmental performance to determine the best strategy in this case.

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Gioulounta, Kleio, Ioannis Kosmadakis, Costas Elmasides, Vasileios Diamantis, Arsenis Piskilopoulos, Iosif Amiridis, and Katerina Stamatelatou. "Energy valorisation of the residual biomass from greenhouses in the framework of a circular economy." IOP Conference Series: Earth and Environmental Science 1123, no. 1 (December 1, 2022): 012016. http://dx.doi.org/10.1088/1755-1315/1123/1/012016.

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Abstract Thrace Greenhouses S.A. cultivates 5000 t y−1 cucumbers and 3500 t y−1 tomatoes hydroponically on 170,000 m2 of land. During cultivation (from February to November), suckers and leaves are removed regularly, producing 7,000 – 8,000 t y−1 residual green biomass. The anaerobic digestion technology was applied at laboratory scale, to explore the potential of valorising the generated residues for biogas production. The latter ranged between 18 and 30 NL methane per kg of fresh biomass (suckers or leaves, respectively). Considering a typical mixture of suckers and leaves produced during the cultivating season, the methane produced annually was estimated at 140,000 m3. The biogas can be used as a fuel in a combined heat and power (CHP) system (cogeneration). CHP was considered the central unit in a hybrid energy system (HES) integrated with batteries, aiming to provide energy autonomy to the greenhouses. Moreover, the flue gas from the CHP containing 10% CO2 and 9% O2 could be used as a source of CO2 in the greenhouses. In this case, trace gases (NOx: 401±37 ppm, NO:168±15 ppm, NO2: 150±18ppm, CO: 401±60, SO2: 1.4±2.2) present in the flue gas should be removed and/or diluted with air before entering the greenhouses.

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Avila, Romina, Álvaro Justo, Elvira Carrero, Eudald Crivillés, Teresa Vicent, and Paqui Blánquez. "Water resource recovery coupling microalgae wastewater treatment and sludge co-digestion for bio-wastes valorisation at industrial pilot-scale." Bioresource Technology 343 (January 2022): 126080. http://dx.doi.org/10.1016/j.biortech.2021.126080.

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Mora-Sánchez, Juan Francisco, Josué González-Camejo, Guillermo Noriega-Hevia, Aurora Seco, and María Victoria Ruano. "Ultrafiltration Harvesting of Microalgae Culture Cultivated in a WRRF: Long-Term Performance and Techno-Economic and Carbon Footprint Assessment." Sustainability 16, no. 1 (December 31, 2023): 369. http://dx.doi.org/10.3390/su16010369.

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A cross-flow ultrafiltration harvesting system for a pre-concentrated microalgae culture was tested in an innovative anaerobic-based WRRF. The microalgae culture was cultivated in a membrane photobioreactor fed with effluent from an anaerobic membrane bioreactor treating sewage. These harvested microalgae biomasses were then anaerobically co-digested with primary and secondary sludge from the water line. Depending on the needs of this anaerobic co-digestion, the filtration harvesting process was evaluated intermittently over a period of 212 days for different operating conditions, mainly the total amount of microalgae biomass harvested and the desired final total solids concentration (up to 15.9 g·L−1 with an average of 9.7 g·L−1). Concentration ratios of 15–27 were obtained with average transmembrane fluxes ranging from 5 to 28 L·m−2·h−1. Regarding membrane cleaning, both backflushing and chemical cleaning resulted in transmembrane flux recoveries that were, on average, 21% higher than those achieved with backflushing alone. The carbon footprint assessment shows promising results, as the GHG emissions associated with the cross-flow ultrafiltration harvesting process could be less than the emissions savings associated with the energy recovered from biogas production from the anaerobic valorisation of the harvested microalgae.

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