Feasibility and strategies for anaerobic digestion of solid waste for energy production in Dar es Salaam city, Tanzania [An article from: Resources, Conservation & Recycling]

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Description:
In Tanzania, the most serious solid waste management problem currently is disposal, but since the largest fraction of the waste is organics which are amenable to anaerobic digestion and composting, it makes environmental and economic sense to explore these options. This prompted the conception of the Taka (waste) Gas Project which is meant to utilise organic solid waste from Dar es Salaam city for producing biogas which will be used for generating electric energy. Production of biogas from solid waste can reduce the amount of waste that needs to be disposed of as well as save the environment in Tanzania from degradation caused by wood fuel extraction. The total quantity of energy expected to be generated by the project is 5.18MWh/d. Of this, 5.91MW/d will be availed to the national grid while the remainder will be for internal use of the project. The focus of this paper is on the feasibility and strategies required to implement the project. Also, the solid waste management situation in Dar es Salaam city is outlined along with quantitative and qualitative data on organic solid waste envisaged for the Taka Gas Project.