By Brenda Cansino-Loeza and José María Ponce-Ortega. This work presents a general mathematical programming model for satisfying water, energy, and food needs in isolated and low-income communities involving different process integration approaches. As a case study, the community with the lowest index of poverty and marginalization from the State of Guerrero in Mexico is presented. The problem consists in determining the optimal and sustainable configuration to satisfy the energy, water, and food demands of the inhabitants. Also, the use of waste-to-energy technologies is proposed to handle the municipal solid waste correctly and obtain valuated products from wastes to reduce the environmental impact.
A multi-objective analysis is presented considering the consumption of fresh water, the greenhouse gas emissions, and the cost of the integrated system as objective functions.
The results show that it is possible to satisfy the water, energy, and food needs in isolated communities accounting for integrated processes. Besides, it is possible to obtain trade-off solutions considering contradicting objectives. To trade-off the proposed objectives, it is presented a multistakeholder approach which is capable to find the compromise solution which is the point where the objectives are minimized simultaneously. The results show that the compromise solution is very close of the Utopian Point, which indicates that is possible to obtain a solution that satisfies almost entirely the minimum of the objectives.
ACS Sustainable Chem. Eng. 2019, 7, 1399−1418
In this article, the authors explore what the WEF Nexus is, how to minimize trade-offs and maximise co-benefits within it, and what opportunities it offers to address the challenges of a changing climate. They further draw on ongoing research in Tanzania’s Rufiji River Basin – a case that exemplifies key issues in the WEF nexus – where ambitious development plans cut across several sectors and could be severely limited by future climate change.// more
The call for abstracts for the upcoming Dresden Nexus Conference 2020 is now open! The Dresden Nexus Conference is an international conference series dedicated to advancing research on and the implementation of a Nexus Approach to environmental resource management and to fostering dialogue on how nexus thinking contributes to achieving the United Nations Sustainable Development Goals (SDGs).// more
This call marks the start of a new cooperation programme with the South African National Research Foundation (NRF) and falls under the Merian Fund. The programme aims to further stimulate joint, impact-oriented research between Dutch and South African researchers. The first call for proposals focuses on the WEF nexus within major societal challenges. The deadline for submission is 26 September 2019.// more