Cash for trash: recycling urban organic wastes as fertilizers

Picture copyright Thuriès et al.

In sub-Saharan Africa, rapid-growing cities generate increasing volumes of organic wastes that can be recycled and transformed into organic fertilizers. Scientists Thuriès et al. found considerable variability and discrepancy in both agronomic and economic values of these wastes. Their results suggest that the composting process needs to be improved. They reckoned that the humus potential should be calculated to assess more accurately the amendment value and used to adjust their market price.

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