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Adding benefit to wetlands: valorization of harvested common reed through mushroom production
Swedish University of Agricultural Sciences.
Swedish University of Agricultural Sciences.
Kristianstad University, Faculty of Natural Science, Research environment Man & Biosphere Health (MABH). Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap. Swedish University of Agricultural Sciences.ORCID iD: 0000-0002-6188-0449
Swedish University of Agricultural Sciences.
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2018 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 637-638, p. 1395-1399Article in journal (Refereed) Published
Abstract [en]

Wetlands have been successfully implemented as water purification systems for removal of plant nutrients and can play a significant role in nutrient recycling, depending on use of the harvested biomass. In a constructed wetland in southern Sweden examined in this study, assimilation of plant nutrients in wetland biomass corresponded to 234 kg/ha nitrogen, 22.8 kg/ha phosphorus, and 158 kg/ha potassium in the study year (2016). The harvested biomass, composed exclusively of common reed, was evaluated as a substrate for production of oyster mushrooms, one of the most widely produced edible mushrooms in the world. The biological efficiency of the substrate was 138 ± 10%, corresponding to production of 1.4 kg mushrooms (fresh weight) based on 1 kg reed (dry weight). The fruiting bodies had high quality, with total protein concentration 18.3 ± 2.8% and very low levels of contaminating heavy metals. Thus, nutrient assimilation in wetland biomass not only decreases the risk of eutrophication in recipient waters, but can be utilized for direct production of high-quality food. The biomass remaining after mushroom production, composed of mycelium and partly degraded wetland biomass, has potential for use in ruminant feed, i.e., as roughage.

Place, publisher, year, edition, pages
2018. Vol. 637-638, p. 1395-1399
Keywords [en]
Constructed wetland, Mushroom substrate, Phragmites australis, Pleurotus ostreatus
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:hkr:diva-18173DOI: 10.1016/j.scitotenv.2018.05.106ISI: 000436605400133PubMedID: 29801232OAI: oai:DiVA.org:hkr-18173DiVA, id: diva2:1211337
Available from: 2018-05-30 Created: 2018-05-30 Last updated: 2018-09-14Bibliographically approved

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