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Microbial biotreatment of actual textile wastewater in a continuous sequential rice husk biofilter and the microbial community involved
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.ORCID iD: 0000-0001-8179-1446
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. (Ctr Ecol & Evolut Microbial Model Syst)ORCID iD: 0000-0002-7120-4145
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.ORCID iD: 0000-0002-6405-1347
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.ORCID iD: 0000-0003-0841-7065
2017 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 12, no 1, e0170562Article in journal (Refereed) Published
Abstract [en]

Textile dying processes often pollute wastewater with recalcitrant azo and anthraquinone dyes. Yet, there is little development of effective and affordable degradation systems for textile wastewater applicable in countries where water technologies remain poor. We determined biodegradation of actual textile wastewater in biofilters containing rice husks by spectrophotometry and liquid chromatography mass spectrometry. The indigenous microflora from the rice husks consistently performed >90% decolorization at a hydraulic retention time of 67 h. Analysis of microbial community composition of bacterial 16S rRNA genes and fungal internal transcribed spacer (ITS) gene fragments in the biofilters revealed a bacterial consortium known to carry azoreductase genes, such as Dysgonomonas, and Pseudomonas and the presence of fungal phylotypes such as Gibberella and Fusarium. Our findings emphasize that rice husk biofilters support a microbial community of both bacteria and fungi with key features for biodegradation of actual textile wastewater. These results suggest that microbial processes can substantially contribute to efficient and reliable degradation of actual textile wastewater. Thus, development of biodegradation systems holds promise for application of affordable wastewater treatment in polluted environments.

Place, publisher, year, edition, pages
2017. Vol. 12, no 1, e0170562
National Category
Water Treatment
Research subject
Technology (byts ev till Engineering), Environmental Biotechnology
Identifiers
URN: urn:nbn:se:lnu:diva-61528DOI: 10.1371/journal.pone.0170562ISI: 000396129000068PubMedID: 28114377OAI: oai:DiVA.org:lnu-61528DiVA: diva2:1083471
Available from: 2017-03-21 Created: 2017-03-21 Last updated: 2017-04-03Bibliographically approved

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Forss, JörgenLindh, Markus V.Pinhassi, JaroneWelander, Ulrika
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Department of Built Environment and Energy TechnologyDepartment of Biology and Environmental Science
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CiteExportLink to record
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