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Low temperature BMP tests using fish waste from invasive Round goby of the Baltic Sea

dc.contributor.authorGruduls, A.
dc.contributor.authorBalina, K.
dc.contributor.authorIvanovs, K.
dc.contributor.authorRomagnoli, F.
dc.date.accessioned2018-04-17T12:50:47Z
dc.date.available2018-04-17T12:50:47Z
dc.date.issued2018
dc.descriptionArticleeng
dc.description.abstractRound goby (Neogobius melanostomus ) is an invasive fish species in the Baltic Sea. While meat can be used for human consumption, fish processing residues are considered as a waste. Within circular economy and bio - economy perspectives fish waste could be used as a valuable feedstock for biogas prod uction. However, the research is mostly focused on evaluating biogas yield at mesophilic conditions (i.e. 37 °C ). In this study the impact of low temperature on Biochemical Methane Potential (BMP) tests has been investigated. Round goby’s processing leftov ers - heads, intestines and skin/bone mixture were tested in codigestion with sewage sludge. Anaerobic digestion (AD) was carried out in 100 mL batch tests at low temperature 23 °C and 37 °C conditions, over an incubation period of 31 days. The results sho w that AD at low temperature occurs twice as slowly as under 37 °C conditions. However, after 31 days the BMP values for 23 °C samples were only 2% lower than for high temperature samples. Heads and skins showed similar BMP values reaching on average 502 L CH 4 kg VS - 1 and 556 L CH 4 kg VS - 1 respectively. BMP for fish intestines was higher, reaching on average 870 L CH 4 kg VS - 1 . Average BMP for mixes of fish heads, skins, intestines and bones was 660 L CH 4 kg VS - 1 . Acquired BMPs were further compared with the theoretical BMPs from Buswell's formula. Research results suggests that anaerobic digestion of fish waste under low temperature conditions could be feasible as the process still efficiently occurs, in fact ope ning a new opportunity to explore the overall sustainability of technologies based on these conversion processes.eng
dc.identifier.issn1406-894X
dc.identifier.publicationAgronomy Research, 2018, vol. 16, no. 2, pp. 398-409eng
dc.identifier.urihttp://hdl.handle.net/10492/3893
dc.identifier.urihttp://dx.doi.org/10.15159/ar.18.073
dc.rights.holderCopyright 2009 by Estonian University of Life Sciences, Latvia University of Agriculture, Aleksandras Stulginskis University, Lithuanian Research Centre for Agriculture and Forestry. No part of this publication may be reproduced or transmitted in any form, or by any means, electronic or mechanical, incl. photocopying, electronic recording, or otherwise without the prior written permission from the Estonian University of Life Sciences, Latvia University of Agriculture, Aleksandras Stulginskis University, Lithuanian Research Centre for Agriculture and Forestryeng
dc.subjectbiomethaneeng
dc.subjectlow temperatureeng
dc.subjectfish wasteeng
dc.subjectanaerobic digestioneng
dc.subjectNeogobius melanostomuseng
dc.subjectarticleseng
dc.titleLow temperature BMP tests using fish waste from invasive Round goby of the Baltic Seaeng
dc.typeArticleeng

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