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Type of publication: conference paper
Type of publication (PDB): Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Aplinkos inžinerija / Environmental engineering (T004)
Author(s): Skorupskaitė, Virginija;Sendžikienė, Eglė;Gumbytė, Milda
Title: Possibilities to Use Fish Waste for Energy
Is part of: Rural Development 2017 [elektroninis išteklius]: Bioeconomy Challenges : The 8th International Scientific Conference, 23-24th November, 2017, Aleksandras Stulginskis University : Abstracts Book. Akademija : Aleksandras Stulginskis University, 2017
Extent: p. 121-122
Date: 2017
Note: Puslapiai nurodyti pagal pataisytą leidinį
Keywords: Fish waste;fish farming sludge;biofuels
ISBN: 9786094491238
Abstract: Most of the fish caught is used in the food industry. About 40% of the fish weight comprises fish fillet, and secondary raw materials, such as the fish head, tail, fins, guts and bones can comprise up to 60% of the fish weigt. The secondary raw materials can be used in food industry, agriculture, for pharmaceutical purposes, etc. Other, no less important way for usage of secondary raw fish, dead fish and fish farming sludge is the utilization of mentioned feedstocks for energy purposes, i.e. biofuels production. The aim of this study is to investigate the use possibilities of fish oil, which being in the secondary fish materials is unsuitable for the usage in the pharmaceutical industry, for biodiesel production, and biomass left after oil extraction or non de-oiled fish biomass for biogas production. Besides, fish farming slugde as fraction of composite feedstock substratum was used in this study. The investigation of energy production from fish waste were performed using dried and wet feedstock. The estimated oil content in fish biomass reached 40.4%. The results of study of fatty acids composition showed that fish oil contains high content of monounsaturated fatty acids. The major part of saturated fatty acids is palmitic acid (8.8%), monounsaturated and polyunsaturated are oleic (49.6%) and linoleic acids (9.42%). During analysis of biogas production was estimated that from 1 g volatile solids of fish waste it is possible to get more than 1000 ml of biogas, containing more than 65% of methane and from fish farming sludge amount of biogas is app. 600 ml/gVS.Compared with biomass of fish waste, fish farming sludge has a significantly lower dry matter content (app.0.3-4%).[...]
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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