The sustainability of food production systems is inherently linked with energy, water and food (EWF) resources directly and in-directly throughout their lifecycle. The understanding of the interdependencies between the three resource sectors in the context of food production can provide a measurable account for resource requirements, while meeting food security objectives. The energy, water and food Nexus tool developed by the authors has been designed to model the inter-dependency between energy, water and food resources, whilst conducting an environmental assessment of product systems. With emphasis on the inter-linkages between EWF resources, the tool quantifies material flows, natural resource and energy consumption at component unit process level. This work integrates greenhouse gas control and waste to power technologies within the energy, water and food Nexus tool and evaluates the environmental impact of a hypothetical food product system designed to deliver a perceived level of food self-sufficiency (40%) for the State of Qatar. Multiple system configurations, representative of different pathways for the delivery of consistent food products are evaluated, transforming a once linear product system into a circular design. The sub-systems added consist of a biomass integrated gasification combined cycle which recycles solid waste into useful forms of energy that can be re-used within the nexus. In addition, a carbon capture sub-system is integrated to capture and recycle CO2 from both the fossil fuel powered and the biomass integrated gasification combined cycle energy sub-systems. The integration of carbon capture with the biomass integrated gasification combined cycle transforms the carbon neutral biomass integrated gasification combined cycle process to a negative greenhouse gas emission technology known as bio-energy with carbon capture and storage. For the different scenarios and sub-system configurations considered, the global warming potential can be theoretically balanced (reduced by ∼98%) through the integration of photovoltaics, biomass integrated gasification combined cycle and carbon capture technologies. The peak global warming potential, i.e. a fully fossil fuel dependent system, is recorded at 1.73 × 10⁹ kg CO2 eq./year whilst the lowest achievable global warming potential is 2.18 × 10⁷ kg CO2 eq./year when utilising a combination of photovoltaics, carbon capture integrated with combined cycle gas turbine in addition to the integrated negative emission achieving system. The natural gas consumption is reduced by 7.8 × 10⁷ kg/year in the best case configuration, achieving a credit. In the same scenario, the photovoltaics land footprint required is calculated to a maximum of 660 ha. The maximum theoretically achievable negative emission is 1.09 × 10⁹ kg CO2/year.

This document presents the key findings of the evaluation of an integrated agricultural production and water management project implemented by IFAD in Netrakona district, in northern Bangladesh. The aim of this eight-year project was to boost the incomes and food security of small farm households and arrest their decline into marginalisation and landlessness.Outcomes of the project include: sustainable changes have been brought about by the projectimpact surveys show that 85% of respondents now use the skills and knowledge they received from training and will continue to do sobetween 1995 and 2000 the amount of land used to grow vegetables increased by 186% from 2,750 to 8,950 hectaresnew training and community centres facilitate communication on marketing issues or availability of social servicesimplementation was not participatory: greater expertise in participatory development and group mobilisation is needed in future projects of this kindthe potential for livestock development should be given higher priority and where NGOs are involved in government projects more effective coordination between the two is vital.Key insights from the evaluation include:lack of credit for small farmers is a constraint to agricultural development and needs strengtheningparticipation is the key to people-centred development yet it was understood differently by various partners. Greater expertise and knowledge of participatory development and social mobilisation during the planning stages would ensure that sound concepts and implementation strategies are adopted from the outsetstronger project design such as the flexibility to modify project activities during implementation, if necessary, would ensure greater impact.[adapted from author]