Laccase-syringaldehyde-mediated degradation of trace organic contaminants in an enzymatic membrane reactor: Removal efficiency and effluent toxicity.

Nguyen, LN; van de Merwe, JP; Hai, FI; Leusch, FDL; Kang, J; Price, WE; Roddick, F; Magram, SF; Nghiem, LD

Laccase-syringaldehyde-mediated degradation of trace organic contaminants in an enzymatic membrane reactor: Removal efficiency and effluent toxicity.

Nguyen, LN van de Merwe, JP Hai, FI Leusch, FDL Kang, J Price, WE Roddick, F Magram, SF Nghiem, LD

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Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Bioresour Technol, 2016, 200, pp. 477-484
Issue Date:: 2016-01

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Field	Value	Language
dc.contributor.author	Nguyen, LN
dc.contributor.author	van de Merwe, JP
dc.contributor.author	Hai, FI
dc.contributor.author	Leusch, FDL
dc.contributor.author	Kang, J
dc.contributor.author	Price, WE
dc.contributor.author	Roddick, F
dc.contributor.author	Magram, SF
dc.contributor.author	Nghiem, LD
dc.date.accessioned	2022-02-08T07:04:30Z
dc.date.available	2015-10-06
dc.date.available	2022-02-08T07:04:30Z
dc.date.issued	2016-01
dc.identifier.citation	Bioresour Technol, 2016, 200, pp. 477-484
dc.identifier.issn	0960-8524
dc.identifier.issn	1873-2976
dc.identifier.uri	http://hdl.handle.net/10453/154302
dc.description.abstract	Redox-mediators such as syringaldehyde (SA) can improve laccase-catalyzed degradation of trace organic contaminants (TrOCs) but may increase effluent toxicity. The degradation performance of 14 phenolic and 17 non-phenolic TrOCs by a continuous flow enzymatic membrane reactor (EMR) at different TrOC and SA loadings was assessed. A specific emphasis was placed on the investigation of the toxicity of the enzyme (laccase), SA, TrOCs and the treated effluent. Batch tests demonstrated significant individual and interactive toxicity of the laccase and SA preparations. Reduced removal of resistant TrOCs by the EMR was observed for dosages over 50μg/L. SA addition at a concentration of 10μM significantly improved TrOC removal, but no removal improvement was observed at the elevated SA concentrations of 50 and 100μM. The treated effluent showed significant toxicity at SA concentrations beyond 10μM, providing further evidence that higher dosage of SA must be avoided.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Bioresour Technol
dc.relation.isbasedon	10.1016/j.biortech.2015.10.054
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Biotechnology
dc.subject.mesh	Aspergillus oryzae
dc.subject.mesh	Benzaldehydes
dc.subject.mesh	Biodegradation, Environmental
dc.subject.mesh	Bioreactors
dc.subject.mesh	Catalysis
dc.subject.mesh	Clostridium
dc.subject.mesh	Dose-Response Relationship, Drug
dc.subject.mesh	Inhibitory Concentration 50
dc.subject.mesh	Kinetics
dc.subject.mesh	Laccase
dc.subject.mesh	Luminescence
dc.subject.mesh	Membranes, Artificial
dc.subject.mesh	Organic Chemicals
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Photobacterium
dc.subject.mesh	Clostridium
dc.subject.mesh	Photobacterium
dc.subject.mesh	Aspergillus oryzae
dc.subject.mesh	Organic Chemicals
dc.subject.mesh	Benzaldehydes
dc.subject.mesh	Laccase
dc.subject.mesh	Membranes, Artificial
dc.subject.mesh	Inhibitory Concentration 50
dc.subject.mesh	Bioreactors
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Dose-Response Relationship, Drug
dc.subject.mesh	Kinetics
dc.subject.mesh	Catalysis
dc.subject.mesh	Luminescence
dc.subject.mesh	Biodegradation, Environmental
dc.title	Laccase-syringaldehyde-mediated degradation of trace organic contaminants in an enzymatic membrane reactor: Removal efficiency and effluent toxicity.
dc.type	Journal Article
utslib.citation.volume	200
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2022-02-08T07:04:29Z
pubs.publication-status	Published
pubs.volume	200

Abstract:

Redox-mediators such as syringaldehyde (SA) can improve laccase-catalyzed degradation of trace organic contaminants (TrOCs) but may increase effluent toxicity. The degradation performance of 14 phenolic and 17 non-phenolic TrOCs by a continuous flow enzymatic membrane reactor (EMR) at different TrOC and SA loadings was assessed. A specific emphasis was placed on the investigation of the toxicity of the enzyme (laccase), SA, TrOCs and the treated effluent. Batch tests demonstrated significant individual and interactive toxicity of the laccase and SA preparations. Reduced removal of resistant TrOCs by the EMR was observed for dosages over 50μg/L. SA addition at a concentration of 10μM significantly improved TrOC removal, but no removal improvement was observed at the elevated SA concentrations of 50 and 100μM. The treated effluent showed significant toxicity at SA concentrations beyond 10μM, providing further evidence that higher dosage of SA must be avoided.

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http://hdl.handle.net/10453/154302