Improved utilization of fish waste by anaerobic digestion following omega-3 fatty acids extraction.
(2012) In Journal of Environmental Management 110. p.159-165- Abstract
- Fish waste is a potentially valuable resource from which high-value products can be obtained. Anaerobic digestion of the original fish waste and the fish sludge remaining after enzymatic pre-treatment to extract fish oil and fish protein hydrolysate was evaluated regarding the potential for methane production. The results showed high biodegradability of both fish sludge and fish waste, giving specific methane yields of 742 and 828 m(3)CH(4)/tons VS added, respectively. However, chemical analysis showed high concentrations of light metals which, together with high fat and protein contents, could be inhibitory to methanogenic bacteria. The feasibility of co-digesting the fish sludge with a carbohydrate-rich residue from crop production was... (More)
- Fish waste is a potentially valuable resource from which high-value products can be obtained. Anaerobic digestion of the original fish waste and the fish sludge remaining after enzymatic pre-treatment to extract fish oil and fish protein hydrolysate was evaluated regarding the potential for methane production. The results showed high biodegradability of both fish sludge and fish waste, giving specific methane yields of 742 and 828 m(3)CH(4)/tons VS added, respectively. However, chemical analysis showed high concentrations of light metals which, together with high fat and protein contents, could be inhibitory to methanogenic bacteria. The feasibility of co-digesting the fish sludge with a carbohydrate-rich residue from crop production was thus investigated, and a full-scale process outlined for converting odorous fish waste to useful products. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2967254
- author
- Ivo Achu, Nges LU ; Mbatia, Betty LU and Björnsson, Lovisa LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Biogas, Salmon waste, Jerusalem artichoke
- in
- Journal of Environmental Management
- volume
- 110
- pages
- 159 - 165
- publisher
- Elsevier
- external identifiers
-
- wos:000309486700017
- pmid:22784804
- scopus:84863505867
- ISSN
- 0301-4797
- DOI
- 10.1016/j.jenvman.2012.06.011
- language
- English
- LU publication?
- yes
- id
- 19ca0915-8155-48d9-9de7-f9346793543a (old id 2967254)
- date added to LUP
- 2016-04-01 10:00:55
- date last changed
- 2022-04-27 17:45:55
@article{19ca0915-8155-48d9-9de7-f9346793543a,
abstract = {{Fish waste is a potentially valuable resource from which high-value products can be obtained. Anaerobic digestion of the original fish waste and the fish sludge remaining after enzymatic pre-treatment to extract fish oil and fish protein hydrolysate was evaluated regarding the potential for methane production. The results showed high biodegradability of both fish sludge and fish waste, giving specific methane yields of 742 and 828 m(3)CH(4)/tons VS added, respectively. However, chemical analysis showed high concentrations of light metals which, together with high fat and protein contents, could be inhibitory to methanogenic bacteria. The feasibility of co-digesting the fish sludge with a carbohydrate-rich residue from crop production was thus investigated, and a full-scale process outlined for converting odorous fish waste to useful products.}},
author = {{Ivo Achu, Nges and Mbatia, Betty and Björnsson, Lovisa}},
issn = {{0301-4797}},
keywords = {{Biogas; Salmon waste; Jerusalem artichoke}},
language = {{eng}},
pages = {{159--165}},
publisher = {{Elsevier}},
series = {{Journal of Environmental Management}},
title = {{Improved utilization of fish waste by anaerobic digestion following omega-3 fatty acids extraction.}},
url = {{http://dx.doi.org/10.1016/j.jenvman.2012.06.011}},
doi = {{10.1016/j.jenvman.2012.06.011}},
volume = {{110}},
year = {{2012}},
}