The Experts below are selected from a list of 263922 Experts worldwide ranked by ideXlab platform
Aidong Yang - One of the best experts on this subject based on the ideXlab platform.
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integrated approaches to the optimisation of regional and local Food Energy water systems
Current opinion in chemical engineering, 2017Co-Authors: Anton Johannes Veldhuis, Aidong YangAbstract:Optimisation of regional and local Food–Energy–water systems that takes into account the connections between the three sectors is classified into ‘integration based on footprint’ and ‘integration based on co-decision’. Footprint-based approaches focus on the decision on one main system while using static footprint data to account for the links with other systems. By contrast, co-decision based approaches aim to simultaneously optimise multiple, interconnected systems. Choosing between these two approaches needs to consider the nature of the interactions between different systems as well as data availability and the feasibility of implementing the optimisation results. Future research in this area is expected to broaden decision targets and to improve the handing of the multiple scales involved in integrated Food–Energy–water decision making.
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insight based approach for the design of integrated local Food Energy water systems
Environmental Science & Technology, 2017Co-Authors: Melissa Yuling Leung Pah Hang, Elias Martinezhernandez, Matthew Leach, Aidong YangAbstract:Society currently relies heavily on centralized production and large scale distribution infrastructures to meet growing demands for goods and services, which causes socioeconomic and environmental issues, particularly unsustainable resource supply. Considering local production systems as a more sustainable alternative, this paper presents an insight-based approach to the integrated design of local systems providing Food, Energy, and water to meet local demands. The approach offers a new hierarchical and iterative decision and analysis procedure incorporating design principles and ability to examine design decisions, in both synthesis of individual yet interconnected subsystems and integrated design of resource reuse across the entire system. The approach was applied to a case study on design of Food-Energy-water system for a locale in the U.K.; resulting in a design which significantly reduced resource consumption compared to importing goods from centralized production. The design process produced insights into the impact of one decision on other parts of the problem, either within or across different subsystems. The result was also compared to the mathematical programming approach for whole system optimization from previous work. It was demonstrated that the new approach could produce a comparable design while offering more valuable insights for decision makers.
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designing integrated local production systems a study on the Food Energy water nexus
Journal of Cleaner Production, 2016Co-Authors: Melissa Yuling Leung Pah Hang, Elias Martinezhernandez, Matthew Leach, Aidong YangAbstract:Centralised production of essential products and services based on fossil fuels and large scale distribution infrastructures has contributed to a plethora of issues such as deterioration of ecosystems, social-economic injustice and depletion of resources. The establishment of local production systems that deliver various products for local consumption (e.g. Food, Energy and water) by making the best use of locally available renewable resources can potentially alleviate unsustainable resource consumption. The main objective of this work is to develop process systems engineering tools combined with the concept of resource accounting using exergy for the design of such local production systems. A general design framework comprising an optional preliminary design stage followed by a simultaneous design stage based on mathematical optimisation is proposed. The preliminary design stage considers each supply subsystem individually and allows insights into the potential interactions between them. The simultaneous design stage yields an optimal design of the local production system and has the capacity to include all design integration possibilities between the subsystems and generate a truly integrated design solution. The proposed methodology, which reflects generalised principles for designing local production systems, has been illustrated through a case study on the integrated design of the Food-Energy-water nexus for a designated eco-town in UK. It demonstrates the advantages of an integrated design of a system making use of local resources to meet its demands over a system relying on centralised supplies and a design without considering integration opportunities between subsystems.
Elias Martinezhernandez - One of the best experts on this subject based on the ideXlab platform.
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biorefineries and the Food Energy water nexus towards a whole systems approach to design and planning
Current opinion in chemical engineering, 2017Co-Authors: Elias Martinezhernandez, Sheila SamsatliAbstract:Concerns over securing basic resources to an increasing world population have stressed the importance of critical interactions between the Food, Energy and water supply systems, as framed by the Food-Energy-water nexus concept. Current biorefineries producing first generation biofuels from Food crops have impacted nexus resources, most notoriously land and Food but also water and fossil Energy resources required during cultivation and processing. Solutions to the nexus challenges of biorefineries require the search for alternative feedstocks and the application of methods that capture opportunities for synergistic interactions with the nexus. At the process level, more efficient water and Energy use and Food production could be possible if methods for extensive biomass fractionation, process integration and optimisation are developed. There is also a great opportunity to include the interactions between biomass supply and the nexus sectors in value chain optimisation to find strategic integrations that improve productivity and reduce losses and environmental impacts. By incorporating opportunities into a whole systems approach for design and planning, biorefineries will be able to balance nexus resource trade-offs, deliver their potential for full exploitation of biomass as the only source of renewable carbon and materials, and translate nexus issues into social welfare and sustainable development.
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insight based approach for the design of integrated local Food Energy water systems
Environmental Science & Technology, 2017Co-Authors: Melissa Yuling Leung Pah Hang, Elias Martinezhernandez, Matthew Leach, Aidong YangAbstract:Society currently relies heavily on centralized production and large scale distribution infrastructures to meet growing demands for goods and services, which causes socioeconomic and environmental issues, particularly unsustainable resource supply. Considering local production systems as a more sustainable alternative, this paper presents an insight-based approach to the integrated design of local systems providing Food, Energy, and water to meet local demands. The approach offers a new hierarchical and iterative decision and analysis procedure incorporating design principles and ability to examine design decisions, in both synthesis of individual yet interconnected subsystems and integrated design of resource reuse across the entire system. The approach was applied to a case study on design of Food-Energy-water system for a locale in the U.K.; resulting in a design which significantly reduced resource consumption compared to importing goods from centralized production. The design process produced insights into the impact of one decision on other parts of the problem, either within or across different subsystems. The result was also compared to the mathematical programming approach for whole system optimization from previous work. It was demonstrated that the new approach could produce a comparable design while offering more valuable insights for decision makers.
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designing integrated local production systems a study on the Food Energy water nexus
Journal of Cleaner Production, 2016Co-Authors: Melissa Yuling Leung Pah Hang, Elias Martinezhernandez, Matthew Leach, Aidong YangAbstract:Centralised production of essential products and services based on fossil fuels and large scale distribution infrastructures has contributed to a plethora of issues such as deterioration of ecosystems, social-economic injustice and depletion of resources. The establishment of local production systems that deliver various products for local consumption (e.g. Food, Energy and water) by making the best use of locally available renewable resources can potentially alleviate unsustainable resource consumption. The main objective of this work is to develop process systems engineering tools combined with the concept of resource accounting using exergy for the design of such local production systems. A general design framework comprising an optional preliminary design stage followed by a simultaneous design stage based on mathematical optimisation is proposed. The preliminary design stage considers each supply subsystem individually and allows insights into the potential interactions between them. The simultaneous design stage yields an optimal design of the local production system and has the capacity to include all design integration possibilities between the subsystems and generate a truly integrated design solution. The proposed methodology, which reflects generalised principles for designing local production systems, has been illustrated through a case study on the integrated design of the Food-Energy-water nexus for a designated eco-town in UK. It demonstrates the advantages of an integrated design of a system making use of local resources to meet its demands over a system relying on centralised supplies and a design without considering integration opportunities between subsystems.
Inas Elgafy - One of the best experts on this subject based on the ideXlab platform.
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water Food Energy nexus and non nexus approaches for optimal cropping pattern
Water Resources Management, 2017Co-Authors: Inas Elgafy, Neil S Grigg, Reagan WaskomAbstract:Given the water-Food-Energy interconnections, integrated planning, policy and management using the nexus approach are required for the Food production system. In this study the nexus and non-nexus approaches are compared to propose an optimal cropping patternthat considers water, Energy and economic parameters. Linear optimization was applied to compare i) the nexus approach utilizing an objective function to maximize a water-Food-Energy nexus index and 2) the non-nexus approach utilizing three objective functions for water use, Energy use, and agricultural net return. The study showed that the nexus approach is the best. Applying it through a water-Food-Energy nexus index provides a holistic method for identifying an optimal cropping pattern that reduces water and Energy consumption and increases the agricultural net return.
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water Food Energy nexus index analysis of water Energy Food nexus of crop s production system applying the indicators approach
Applied Water Science, 2017Co-Authors: Inas ElgafyAbstract:Analysis the water–Food–Energy nexus is the first step to assess the decision maker in developing and evaluating national strategies that take into account the nexus. The main objective of the current research is providing a method for the decision makers to analysis the water–Food–Energy nexus of the crop production system at the national level and carrying out a quantitative assessment of it. Through the proposed method, indicators considering the water and Energy consumption, mass productivity, and economic productivity were suggested. Based on these indicators a water–Food–Energy nexus index (WFENI) was performed. The study showed that the calculated WFENI of the Egyptian summer crops have scores that range from 0.21 to 0.79. Comparing to onion (the highest scoring WFENI,i.e., the best score), rice has the lowest WFENI among the summer Food crops. Analysis of the water–Food–Energy nexus of forty-two Egyptian crops in year 2010 was caried out (Energy consumed for irrigation represent 7.4% of the total Energy footprint). WFENI can be applied to developed strategies for the optimal cropping pattern that minimizing the water and Energy consumption and maximizing their productivity. It can be applied as a holistic tool to evaluate the progress in the water and agricultural national strategies. Moreover, WFENI could be applied yearly to evaluate the performance of the water-Food-Energy nexus managmant.
Ni-bin Chang - One of the best experts on this subject based on the ideXlab platform.
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integrative technology hubs for urban Food Energy water nexuses and cost benefit risk tradeoffs i global trend and technology metrics
Critical Reviews in Environmental Science and Technology, 2021Co-Authors: Ni-bin Chang, Uzzal Hossain, Andrea Valencia, Jiangxiao Qiu, Mengnan Chen, Ana Pires, Chelsea Kaandorp, Edo Abraham, Qipeng P Zheng, Marieclaire Ten VeldhuisAbstract:The Food-Energy-Water (FEW) nexus for urban sustainability needs to be analyzed via an integrative rather than a sectoral or silo approach, reflecting the ongoing transition from separate infrastru...
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Integrative technology hubs for urban Food- Energy-water nexuses and cost-benefit-risk tradeoffs (I): Global trend and technology metrics
Critical Reviews in Environmental Science and Technology, 2020Co-Authors: Ni-bin Chang, Uzzal Hossain, Andrea Valencia, Jiangxiao Qiu, Qipeng Zheng, Mengnan Chen, Ana Pires, Chelsea Kaandorp, Edo Abraham, Marie-claire Ten VeldhuisAbstract:The Food-Energy-Water (FEW) nexus for urban sustainability needs to be analyzed via an integrative rather than a sectoral or silo approach, reflecting the ongoing transition from separate infrastructure systems to an integrated social-ecological-infrastructure system. As technology hubs can provide Food, Energy, water resources via decentralized and/or centralized facilities, there is an acute need to optimize FEW infrastructures by considering cost-benefit-risk tradeoffs with respect to multiple sustainability indicators. This paper identifies, categorizes, and analyzes global trends with respect to contemporary FEW technology metrics that highlights the possible optimal integration of a broad spectrum of technology hubs for possible cost-benefit-risk tradeoffs. The challenges related to multiscale and multiagent modeling processes for the simulation of urban FEW systems were discussed with respect to the aspects of scaling-up, optimization process, and risk assessment. Our review reveals that this field is growing at a rapid pace and the previous selection of analytical methodologies, nexus criteria, and sustainability indicators largely depended on individual FEW nexus conditions disparately, and full-scale cost-benefit-risk tradeoffs were very rare. Therefore, the potential full-scale technology integration in three ongoing cases of urban FEW systems in Miami (the United States), Marseille (France), and Amsterdam (the Netherlands) were demonstrated in due purpose finally.
Reagan Waskom - One of the best experts on this subject based on the ideXlab platform.
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water Food Energy nexus and non nexus approaches for optimal cropping pattern
Water Resources Management, 2017Co-Authors: Inas Elgafy, Neil S Grigg, Reagan WaskomAbstract:Given the water-Food-Energy interconnections, integrated planning, policy and management using the nexus approach are required for the Food production system. In this study the nexus and non-nexus approaches are compared to propose an optimal cropping patternthat considers water, Energy and economic parameters. Linear optimization was applied to compare i) the nexus approach utilizing an objective function to maximize a water-Food-Energy nexus index and 2) the non-nexus approach utilizing three objective functions for water use, Energy use, and agricultural net return. The study showed that the nexus approach is the best. Applying it through a water-Food-Energy nexus index provides a holistic method for identifying an optimal cropping pattern that reduces water and Energy consumption and increases the agricultural net return.