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Modeling Municipal Solid Waste Management in Africa: Case Study of Matadi

A large amount of Municipal Solid Waste (MSW) in Africa still piles up on the spot, in trenches, ditches, riverbanks and roadsides, the waste burns in open air or drift by the river flow or the heavy rains. The consequences are air pollution, contamination of soil, groundwater, and rivers. Matadi is the capital of the province Congo Central situated in the bank of the Congo River, where there is also a large amount of MSW. In this article, the authors aimed to present the key elements for the best performance and profitability of Municipal Solid Waste (MSW) management in low-income cities and presented a case study of Matadi.

The research provided an overview of methods and models for integrated planning of a two-phase program: MSW collection and transportation, and MSW treatment. The authors presented the case study of Matadi (the Democratic Republic of Congo) that had a low level of the MSW management compared to other African cities. And they developed a spreadsheet model for collection and transportation of MSW which was relevant for low-income cities and enabled determining the waste collection fee. A CDM decay model was used to predict the GHG emissions in disposal site. The MSW treatment plant in case of Matadi was evaluated. For the anaerobic digestion technology selected as appropriate for this plant, the key factors that ensured profitability of the plant were as follows: tipping fee from the municipality (19% of total revenue), amount of carbon credits which can sum up to 16% of the total revenue, expansion of waste collection range from 25 to 50 km.

In conclusion, the methods of this study can be used for solving waste problem in other low-income cities where the budget for municipal services is scanty, particularly when starting from a very low or even zero level of MSW management.

Article by Gregory Yom Din and Emil Cohen, from Israel.

Full access: http://mrw.so/4l07ou
Image by USEPA Environmental-Protection-Agency, from Flickr-cc.


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