- Title
- Economic evaluation of anaerobic digestion technology
- Creator
- Sebola, M.R., Tesfagiorgis, T., Muzenda, E.
- Subject
- Anaerobic digestion, Energy recovery, Waste disposal
- Date
- 2016
- Type
- Article
- Identifier
- http://hdl.handle.net/10210/213732
- Identifier
- uj:21189
- Identifier
- Citation: Sebola, M.R., Tesfagiorgis, T & Muzenda, E. 2016. Economic evaluation of anaerobic digestion technology.
- Description
- Abstract: This paper evaluates the viability of anaerobic digestion technology as a treatment process for organic waste with an intention of solving the landfill crisis as well as mitigation of greenhouse gases. The proposed technology consists of two digesters system using soaking as a pre-treatment method, and with recirculation of the process water and digested sludge. A financial model was developed to evaluate the economic feasibility of this technology as a renewable energy. Instead of the waste decomposing at local landfills, is converted into a source of energy while the byproducts of the process are treated and used as fertilizers. This technology will require a capital investment of R 2, 2773,900 with a capacity to treat 730000 kg of waste annually. The annual production cost of R1, 269,138 was calculated. The proposed model has debt repayments of R 2,478,551. The total revenue from year 2 – 5 was R 2,360,800, R 2,930,158, R 3,457,314.6 and R 3,988,407.6, respectively. These AD facilities can produce up to 110960 kWh per annum of biogas fuel. The net present value of R3, 042,592, internal rate of return (IRR) of 33% and (BCR) of 1.96 shows that the technology is economically feasible.
- Language
- English
- Rights
- ©2016, authors
- Full Text
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