期刊名称：African Journal of Environmental Science and Technology
电子版ISSN：1996-0786
出版年度：2009
卷号：3
期号：1
页码：13-20
DOI：10.5897/AJEST08.149
语种：English
出版社：Academic Journals
摘要：Worldwide, fish industry wastes are an important contaminant having an impact on the environment.The recovery of value added products from these residues constitutes an important waste reductionstrategy for the industry. In East Africa, Nile perch fish processing into chilled fish fillet for export alongLake Victoria generate large proportions of both solid and liquid wastes. However, no thorough auditingand characterization of the waste has been done that would guide potential value addition throughbioconversions and waste management. Auditing by surveying and mapping the fish processingindustries was conducted along the lake. Waste quantification was done using specific guidelines forassessment of fish wastes. Analysis of the waste was carried out using standard methods. Annual solidwaste and wastewater generation was estimated at 36,000 tonnes and 1,838,000 m3, respectively. Thewastewater generated was high strength with a total chemical oxygen demand of 12,400 mg/l and solidcontent of 5,580 mg/l. The wastewater contained 6,160 mg/l of lipids and 2,000 mg/l of protein. TheNutrient content was 20 mg/l of total phosphorous, 340 mg/l organic nitrogen and 61 mg/l of ammonianitrogen. The current fish waste management systems in place were found to be neither efficient norprofitable, thus profitable options of fish waste utilization and waste reduction strategies areimperative. Modern and economically viable options of fish waste value addition, decision scheme andwaste reduction strategies have been highlighted in this paper. In conclusion, large amounts of fishwaste generated are a rich source of lipids and proteins, which could be utilized for production of valueadded products through bioconversions
