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Microbial biotreatment of actual textile wastewater in a continuous sequential rice husk biofilter and the microbial community involved
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET).ORCID-id: 0000-0001-8179-1446
Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för biologi och miljö (BOM). (Ctr Ecol & Evolut Microbial Model Syst EEMiS)ORCID-id: 0000-0002-7120-4145
Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för biologi och miljö (BOM).ORCID-id: 0000-0002-6405-1347
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET).ORCID-id: 0000-0003-0841-7065
2017 (engelsk)Inngår i: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 12, nr 1, artikkel-id e0170562Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
PLOS , 2017. Vol. 12, nr 1, artikkel-id e0170562
HSV kategori
Forskningsprogram
Teknik, Miljöbioteknik
Identifikatorer
URN: urn:nbn:se:lnu:diva-61528DOI: 10.1371/journal.pone.0170562ISI: 000396129000068PubMedID: 28114377OAI: oai:DiVA.org:lnu-61528DiVA, id: diva2:1083471
Tilgjengelig fra: 2017-03-21 Laget: 2017-03-21 Sist oppdatert: 2019-09-06bibliografisk kontrollert

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