Enhancement of Anaerobic Digestion of Nile Perch Fish Processing Wastewater

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dc.contributor.authorGumisiriza, Robert
dc.contributor.authorMshandete, Anthony M.
dc.contributor.authorRubindamayugi, Mugassa
dc.contributor.authorKansiime, Frank
dc.contributor.authorKivaisi, Amelia K.
dc.date.accessioned2016-05-17T13:31:21Z
dc.date.available2016-05-17T13:31:21Z
dc.date.issued2009
dc.description.abstractIn East Africa, Nile perch processing into fish fillets for export generates large proportions of both solid and liquid fish wastes. These wastes are improperly utilized and/or disposed off untreated leading to environmental pollution problems. On the other hand, Nile perch fish processing wastewater (FPW) contains high concentrations of lipids and proteins, which have high methane yield potential. However, anaerobic digestion (AD) of FPW for methane production is limited due to process inhibition by lipids and ammonia intoxication. To overcome these limitations, the effects of co-digestion, physical and biological pretreatments on extent of methane yield were investigated. At a loading ratio of 1:1 (inoculum to substrate) with raw FPW, a methane yield of 0.56 m 3 /kgVS was obtained. Co-digestion of the residue with 10% gVS of brewery wastewater enhanced methane yield to a highest increment of 66%. Long chain fatty acids (LCFA) removal prior AD enhanced methane yield to an increment of 52% at LCFA removal of 8%. Pretreatment of FPW with aerobic microbial cultures isolated from a fish waste stabilization pond enhanced methane yield to an increment of 60% after 18 h, 68% after 15 h and 76.0% after 12 h of incubation, respectively, for strains CBR 11, BR 10 and a mixture of the two (CBR 11 + BR 10). The present study reports for the first time improvement of AD of Nile perch FPW by co-digestion, physical and biological pre-treatment methods and could be used as a basis for designing a pilot scale process.en_US
dc.identifier.citationGumisiriza, R., Mshandete, A.M., Rubindamayugi, M.S.T., Kansiime, F. and Kivaisi, A.K., 2009. Enhancement of anaerobic digestion of Nile perch fish processing wastewater. African Journal of Biotechnology, 8(2).en_US
dc.identifier.issn1684–5315
dc.identifier.urihttp://hdl.handle.net/20.500.11810/2111
dc.language.isoenen_US
dc.subjectAnaerobic digestionen_US
dc.subjectCo-digestionen_US
dc.subjectLCFA removalen_US
dc.subjectBiological pre-treatmenten_US
dc.subjectNile perch processing wastewateren_US
dc.titleEnhancement of Anaerobic Digestion of Nile Perch Fish Processing Wastewateren_US
dc.typeJournal Article, Peer Revieweden_US
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