Characterization of MSW and related waste-derived compost in Zanzibar municipality
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Date
2010
Authors
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Journal ISSN
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Publisher
SAGE
Abstract
The spread of municipal solid waste (MSW) in Zanzibar municipality has been associated with environmental pollution, unpleasant city conditions, contamination of water sources and coastal areas together with harbouring of malaria vectors. The contamination has a close relationship with eruption of diarrhoea, cholera and typhoid which claim the lives of the residents. Most of the wastes are of domestic and market origin and have the potential for compost production. This study examined the possibility of composting MSW from Zanzibar municipality as an alternative way of SW management and assessed the nutrient contents of the compost for application in agricultural production. Two major classes of SW were selected for the study: municipal solid waste and rice milling by-products. The samples were composted aerobically and anaerobically. The results showed that aerobic composting reduced about 60% of the waste volume. This volume reduction suggests that composting can be a promising SW management technique by reducing the large demand of space for landfilling. Municipal solid waste composted under anaerobic conditions produced compost with relatively higher concentrations of dissolved species than that produced under aerobic conditions. The trace metal contents were higher in MSW than in rice milling by-products. It was found that the unmanaged compost collected from the dumping site had low nutrient contents and was enriched with trace metals. Generally, physico-chemical characteristics, nutrients and trace metal levels suggest that Zanzibar municipal solid waste can produce high-quality compost for application to a wide range of soil types to improve their fertility, under proper management.
Description
Abstract.
Also available at: https://doi.org/10.1177/0734242X09335699
Keywords
Compost, Composting microbial community, Trace metals, Zanzibar, Waste management, Pollution, MSW, Municipal Solid Waste
Citation
Vuai, S. A. H. (2010). Characterization of MSW and related waste-derived compost in Zanzibar municipality. Waste management & research, 28(2), 177-184.