To char or not to char? Review of technologies to produce solid fuels for resource recovery from faecal sludge

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Andriessen, N., Ward, B. J., & Strande, L. (2019). To char or not to char? Review of technologies to produce solid fuels for resource recovery from faecal sludge. Journal of Water Sanitation and Hygiene for Development, 9(2), 210-224. https://doi.org/10.2166/washdev.2019.184