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Characterization of Wood-Dryer Condensate with Assessment of Toxicity to Microorganisms
Karlstad Univ, Dept Engn & Chem Sci, SE-65188 Karlstad, Sweden..
Karlstad Univ, Dept Engn & Chem Sci, SE-65188 Karlstad, Sweden..
2017 (English)In: Journal of environmental engineering, ISSN 0733-9372, E-ISSN 1943-7870, Vol. 143, no 7, 04017019Article in journal (Refereed) Published
Abstract [en]

Drying of wood causes airborne emissions that can be reduced by recirculating all or part of the drying medium. This favors both emission control and energy efficiency, but results in a condensate that contains significant amounts of organic compounds. Drying operations have been requested by municipal regulatory bodies to clean the condensate before release. The industry has tested biological treatment of condensate from biomass dryers, but maintaining the viability of microorganisms has been a challenge. In this study, the effect of drying gas temperature and the final wood moisture content on the chemical composition and acute toxicity of the condensate was tested. Results showed that whereas the condensate from wood drying was extremely toxic to Vibrio fischeri employed in Microtox assays, the undefined mixed culture present in biosludge from a pulp and paper mill treatment plant were considerably less affected. (C) 2017 American Society of Civil Engineers.

Place, publisher, year, edition, pages
ASCE-AMER SOC CIVIL ENGINEERS , 2017. Vol. 143, no 7, 04017019
Identifiers
URN: urn:nbn:se:kau:diva-65476DOI: 10.1061/(ASCE)EE.1943-7870.0001200ISI: 000399912100002OAI: oai:DiVA.org:kau-65476DiVA: diva2:1169732
Available from: 2017-12-29 Created: 2017-12-29 Last updated: 2017-12-29

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