Energy recovery and waste treatment with floating biodigesters

2011 - 2013 • Live & Learn Environmental Education (LLEE)


Improving the sanitation of water-based and floodprone communities through floating, small-scale biodigesters where excreta is converted into biogas for energy and into fertilizer.


This project will develop and trial floating and small-scale biodigesters to convert human and animal waste to biogas for energy and treated waste for fertilizer, while improving the sanitation and public health outcomes of communities living in challenging environments such as water-based and floodprone communities.

Research is covering 4 main areas: a) waste treatment effectiveness and related parameters, b) biodigestion operation and gas production c) system physical performance and material requirements, d) community acceptance evidence.

Countries of activity

Location of main activity


1) Develop, test, improve and document small scale and floating biodigesters and required supporting systems (flotation, inlet systems etc) to allow effective operation in floating and flood-affected villages. 2) Collect supporting data on operational performance under controlled conditions 3) Conduct preliminary practical field trials for community uptake and acceptance feedback and evidence. 4) Integrate biodigesters into holistic development programs especially for sanitation, health,

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Asia & Pacific Bill & Melinda Gates Foundation Biogas systems Cambodia Energy: biogas Fertiliser International NGO Other Renewable energies and climate change Resource recovery Rural Specific to one or several countries Treatment of wastewater or greywater


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