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A Comparative Study on the Cleaner Production Options for Fishery Wastes around Lake Tana

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Around Lake Tana, there are different types of fish processing cooperatives. These cooperatives simply dump the fish wastes (offal) to the Lake Tana which results environmental pollution for the marine ecosystems. In this study three cleaner production options such as biodiesel, biogas and animal feeding were investigated experimentally for the utilization of fishery wastes around Lake Tana. The study showed that fish species (labeobarbus, tilapia and catfish) wastes have oil yield of 28.65%, 16.35% and 5.63 % and free fatty acid content of 10.5%, 7.5% and 6.03% respectively. In the treatment of the oil, only 3.5% of sulfuric acid was consumed to lower the FFA to the required level (2.5%). In the biodiesel experiment, 6:1 ration of methanol to oil and 1hr of reaction retention time were found to be the optimum operating parameters. The yield of biogas was 0.016ml /gram of fish waste. Nutritional composition of fish wastes were 33.4% protein, 0.007% fiber, 1.26% ash, 44% moisture and 21.367% carbohydrate. The study concluded that biodiesel is the possible cleaner production option among the other for the utilization of fishery wastes around Lake Tana.


International Letters of Natural Sciences (Volume 56)
E. Getahun et al., "A Comparative Study on the Cleaner Production Options for Fishery Wastes around Lake Tana", International Letters of Natural Sciences, Vol. 56, pp. 14-24, 2016
Online since:
July 2016

[1] Assefa Mitike Janko, Fish Production, Consumption and Management in Ethiopia, Research Journal of Agriculture and Environmental Management. 3(9) (2014) 460-466.

[2] Information on Ministry of Science and Technology, http/www. most. gov. et.

[3] Yalew, Alayu, et al, Adaptation and growth performance of nile tilapia (oreochromis niloticus) in integrated fish farming on north western Amhara region, The Ethiopian fisheries and aquatic sciences association (EFASA), (2009).

[4] Dave, Deepika, et al, Marine Oils as Potential Feedstock for Biodiesel Production: Physicochemical Characterization, Journal of Bioprocessing & Biotechniques (2014).

[5] D. Reyntjens, T. Wudneh, Fisheries development in Ethiopia, Project News, Bulletin. 11: 1 (1998).

[6] Eshetu Getahun, Nigus Gabiyye, Experimental Investigation and Characterization of Biodiesel Production from Leather Industry Fleshing Wastes, International Journal of Renewable and Sustainable Energy. 2: 3 (2013).

[7] Roces, Susan A., et al, Methanolysis of Jatropha oil using conventional heating, ASEAN Journal of Chemical Engineering Research. 11: 1 (2011).

[8] Kang Liu, Rui Wang. Biodiesel Production By Transesterification Of Duck Oil With Methanol In The Presence Of Alkali Catalyst, Petroleum & Coal. 55: 1 (2013) 68-72.

[9] M. Poliafico, Anaerobic digestion: decision support software, Master's thesis, Department of civil, structural and environmental engineering, Cork institute of technology, Cork, Ireland, (2007).

[10] V.V. Ramakrishnan, et al, Extraction of oil from mackerel fish processing waste using Alcalase enzyme, Enzyme Engineering. (2013).

[11] Barabás, István, Ioan-Adrian Todoruţ, Biodiesel quality, standards and properties, Biodiesel-Quality, Emissions and By-Products. (2011) 3-28.

[12] American Society for Testing and Materials (ASTM). ASTM D6751-09, Standard Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels., West Conshohocken, PA: ASTM, (2009).

[13] NREL, Biodiesel Handling and User Guide, Fourth Edition, (2009).

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