Water hyacinth choking waterways across Africa and Asia will be harvested and fed into novel bioreactors alongside human waste and food scraps to produce biogas for cooking, refrigeration, and power generation. This project addresses two linked problems: invasive aquatic plants that clog rivers and lakes, and the reliance on firewood for cooking in low-income communities, which harms health and forests. Current disposal of water hyacinth is costly and ineffective; burning it wastes its potential as a fuel source. The research will develop scaled bioreactors—suitable for cities, villages, or schools—that convert the plant and waste mixture into biogas while also recovering nutrients for fertiliser and producing clean water. If successful, the system could replace wood-burning stoves, reduce respiratory disease from indoor smoke, and turn an environmental nuisance into a sustainable energy and sanitation service. The project includes social analysis focused on how energy access affects women and poverty, ensuring the technology meets real community needs. Knowledge transfer runs from the UK and India to Uganda, with training for local businesses and stakeholders.
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The project will focus on utilising invasive aquatic macrophytes such as water hyacinth in combination with nutrient rich waste and immobilised microbial systems to maximise the production of biogas whilst generating clean water and recovering nutrients in low income communities, by developing innovative biotechnology solutions that promote resource efficiency and long-term sustainable services. The project will provide practical solutions for processing water hyacinth with other wastes (e.g. faecal matter, food waste) in novel bioreactors. These ought to be capable of producing affordable clean energy (as per the UN's Sustainable Development Goal # 7- a.k.a. SDG 7) with improved biogas yields and quality, and be suitable for use in cooking, refrigeration and power generation. The proposed processes of biogas production will be designed to be scaled appropriately to either urban areas (cities) and to smaller communities such as villages and schools (SDG 11). In addition, the integrated approaches will allow the potential for the recovery of valuable nutrients from the macrophyte feedstock for growing food and for the production of clean water. The integrated approaches will result in reduced emissions and health impacts associated with combustion of wood (SDG 3) and support more sustainable use of biomass resources (SDG 13). The use of aquatic macrophytes as an alternative biomass resource for energy generation can mitigate the over-reliance on firewood for cooking, thus promoting a more sustainable use of biomass resources (SDG 12). It also provides a solution to the growing problem in many African and Asian regions associated with invasive macrophytes resulting from eutrophication and pollution associated with poor sanitation and regulation of industry (SDG 6, 9 and 13). BEFWAM will support knowledge transfer from high- and mid-income countries (UK and India) to low-income countries in Africa (Uganda) and the delivery of training and supporting partnerships between stakeholders and local business.This will be effected through the application of the innovative technologies developed within the project while all stages of development are to be informed by the analysis of the social implications of energy production from macrophytes and waste. Special emphasis of the social analysis will be devoted to the gender-poverty nexus.
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