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Open windrow composting of fish waste in Estonia

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dc.contributor.authorLanno, Marge
dc.contributor.authorSilm, Maidu
dc.contributor.authorShanskiy, Merrit
dc.contributor.authorKisand, Anu
dc.contributor.authorOrupõld, Kaja
dc.contributor.authorKriipsalu, Mait
dc.contributor.departmentEstonian University of Life Sciences. Institute of Agricultural and Environmental Sciences. Chair of Soil Scienceeng
dc.contributor.departmentEstonian University of Life Sciences. Institute of Agricultural and Environmental Sciences. Chair of Hydrobiology and Fisheryeng
dc.contributor.departmentEstonian University of Life Sciences. Institute of Agricultural and Environmental Sciences. Chair of Environmental Protection and Landscape Managementeng
dc.contributor.departmentEstonian University of Life Sciences. Institute of Forestry and Rural Engineering. Chair of Rural Building and Water Managementeng
dc.date.accessioned2020-08-21T17:01:32Z
dc.date.available2020-08-21T17:01:32Z
dc.date.issued2020
dc.description.abstractBy-catch fish is caught unintentionally during the fishing and is currently thrown back in water bodies to cause the water pollution. Currently fishermen does not have a motivation to bring the by-catch fish to the shore, as it needs to be sorted by fish species, causing fishermen extra work without additional income. Estonian Ministry of Rural Affairs decided to give funding to present study with purpose to find solution to this matter. One possible solution for by-catch fish utilization is to produce high value nutrient rich fertilizer in order to close nutrient cycle and return valuable nutrients into soil. The adaptive study of outdoor windrow composting was conducted with consecutive treatments, rather than simultaneously, in order to make adaptive improvements to the set-up of each consecutive treatment. The consecutive treatments showed that fish waste composting is manageable from a technical perspective, feasible in a temperate climate, and that this type of compost holds high potential as an organic fertiliser or soil improver. Composting process started rapidly and, as required by the EU Commission regulation EU 142/2011, temperatures exceeded 70 °C for at least 1 h in all windrows. While initial treatments suffered from odours, as well as events inhibitive to the composting process, these disadvantages were successfully avoided in later treatments by adding a biofilter and inoculant from previous composting windrows, as well as lake sediments. Rather than disposing of low-value fish, these can be recycled into stable and nutrient-rich compost on-site, near fishing harbours.eng
dc.identifier.issn1406-894X
dc.identifier.publicationAgronomy Research, 2020, vol. 18, no. 4, pp. 2465–2477eng
dc.identifier.urihttp://hdl.handle.net/10492/6135
dc.identifier.urihttps://doi.org/10.15159/ar.20.194
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) ; openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectby-catcheng
dc.subjectbiofiltereng
dc.subjectclay mineralseng
dc.subjectlake sedimenteng
dc.subjectorganic fertilisereng
dc.subjectwheat straweng
dc.subjectarticleseng
dc.titleOpen windrow composting of fish waste in Estoniaeng
dc.typeArticleeng

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2020, Vol. 18, No. 4