(C) Andres Sanz, Unsplash
Modelling and Assessment

Nexus Modelling // Involving the Water–Energy–Food Nexus in Integrating Low-Income and Isolated Communities

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 Chemistry and Engineering


January 2019


ACS Sustainable Chem. Eng. 2019, 7, 1399−1418

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Conférence// Prévention et gestion des conflits liés à la gouvernance des ressources naturelles en Afrique de l’Ouest: défis et perspectives

Le Service civil pour la paix et le projet Frexus, tous deux mis en œuvre par la GIZ, organisent une conférence internationale sur le thème : « Prévention et gestion des conflits liés à la gouvernance des ressources naturelles en Afrique de l'Ouest : défis et opportunités ». La conférence aura lieu du 12 au 14 novembre 2019 à Niamey, au Niger. La conférence vise à informer et à créer des synergies entre les différents acteurs d'Afrique de l'Ouest et d'ailleurs, en partageant leurs capacités dans...

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Conference // Prevention and Management of Conflicts linked to the Governance of Natural Resources in West Africa: Opportunities and Challenges

The Civil Peace Service and the Frexus project, both implemented by the GIZ, are organizing an international conference on the theme: “Prevention and management of conflicts related to natural resource governance in West Africa: challenges and opportunities.” The conference takes place between November 12th and 14th 2019 in Niamey, Niger. The conference aims to inform and create synergies between different actors from West Africa and elsewhere, sharing their capacities in the prevention,...

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Publication // What-If: An Open-Source Decision Support Tool for Water Infrastructure Investment Planning within the Water–Energy–Food–Climate Nexus

By Raphaël Payet-Burin, Mikkel Kromann, Silvio Pereira-Cardenal, Kenneth Marc Strzepek and Peter Bauer-Gottwein. This paper presents a new open-source hydro-economic optimization model, incorporating in a holistic framework, representations of the water, agriculture, and power systems. The model represents the joint development of Nexus related infrastructure and policies and evaluates their economic impact, as well as the risks linked to uncertainties in future climate and socio-economic...

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