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:
Journal Article
Journal or Publication Title:
Water Environment Research
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2300/2312
Subjects:
?? anaerobic digesterbiogasslaughter wastefecal indicatorswater science and technologyenvironmental chemistryqh301 biology ??
ID Code:
10405
Deposited By:
Deposited On:
15 Jul 2008 07:52
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2024 09:14