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Integrated biological treatment and biogas production in a small-scale slaughterhouse in rural Ghana.

Aklaku, E. D. and Jones, Keith and Obiri-Danso, K. (2006) Integrated biological treatment and biogas production in a small-scale slaughterhouse in rural Ghana. Water Environment Research, 78 (12). pp. 2335-2339. ISSN 1061-4303

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Abstract

A small-scale anaerobic slaughter waste treatment plant in rural Ghana was tested for the production of energy and a microbiologically clean effluent suitable for use in irrigation. A typical day's slaughter, comprising 4 cattle, 12 sheep, and 12 goats, produced 8.5 m3 of biogas. Annually, this is equivalent to the energy from 17 metric tons of fuel wood, which is the annual productivity of 2 ha of savanna vegetation. Fecal indicator bacteria were reduced by 2 to 3 logs, nitrates by 86 to 90%, phosphates by 23%, biochemical oxygen demand by 42 to 92%, and suspended solids and dissolved solids by 73 to 86% and 19 to 37%, respectively. The effluent is used for irrigation, and the organic biomass from the digester is used as a biofertilizer. Besides energy and a cleaner effluent, the community benefited from a lessening dependency on fuel wood and reductions in unpleasant smells and nuisance animals, such as flies, dogs, and vultures.

Item Type: Article
Journal or Publication Title: Water Environment Research
Uncontrolled Keywords: anaerobic digester ; biogas ; slaughter waste ; fecal indicators
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 10405
Deposited By: Dr Keith Jones
Deposited On: 15 Jul 2008 08:52
Refereed?: Yes
Published?: Published
Last Modified: 17 Sep 2013 10:50
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/10405

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