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Removal of trace organic contaminants by nitrifying activated sludge and whole-cell and crude enzyme extract of Trametes versicolor

Journal Article


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Abstract


  • The resistance of certain anthropogenic trace organic contaminants (TrOCs) to conventional wastewater treatment and their potential adverse effects on human and ecological health raise significant concerns and have prompted research on their bioremediation by white-rot fungi. This study compared the removal efficiencies of four widespread TrOCs: carbamazepine (CBZ), sulfamethoxazole (SMX), bisphenol A (BPA) and diclofenac (DCF), by nitrifying activated sludge as well as whole-cell and extracellular enzyme (laccase) extract of the white-rot fungus Trametes versicolor. Fungal whole-cell culture removed only BPA and DCF but with high efficiencies (>90%) while the mixed nitrifying culture removed all compounds, although by levels of only 5-40%. Rapid initial sorption on fungal mycelium (44 ±13% for DCF) was observed; however, biodegradation governed the overall removal. Performance comparison between fungal whole-cell and extracellular extract revealed that, unlike BPA, a catalytic pathway independent of extracellular laccase was responsible for DCF removal. Addition of mediator (1-hydroxybenzotriazole) to extracellular extract improved the removal of SMX which bears an electron donor group, but not that of the resistant compound CBZ.

Authors


Publication Date


  • 2013

Citation


  • Yang, S., Hai, F. I., Nghiem, L. D., Roddick, F. & Price, W. E. (2013). Removal of trace organic contaminants by nitrifying activated sludge and whole-cell and crude enzyme extract of Trametes versicolor. Water Science and Technology, 67 (6), 1216-1223.

Scopus Eid


  • 2-s2.0-84875994148

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1728&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/715

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 1216

End Page


  • 1223

Volume


  • 67

Issue


  • 6

Place Of Publication


  • United Kingdom

Abstract


  • The resistance of certain anthropogenic trace organic contaminants (TrOCs) to conventional wastewater treatment and their potential adverse effects on human and ecological health raise significant concerns and have prompted research on their bioremediation by white-rot fungi. This study compared the removal efficiencies of four widespread TrOCs: carbamazepine (CBZ), sulfamethoxazole (SMX), bisphenol A (BPA) and diclofenac (DCF), by nitrifying activated sludge as well as whole-cell and extracellular enzyme (laccase) extract of the white-rot fungus Trametes versicolor. Fungal whole-cell culture removed only BPA and DCF but with high efficiencies (>90%) while the mixed nitrifying culture removed all compounds, although by levels of only 5-40%. Rapid initial sorption on fungal mycelium (44 ±13% for DCF) was observed; however, biodegradation governed the overall removal. Performance comparison between fungal whole-cell and extracellular extract revealed that, unlike BPA, a catalytic pathway independent of extracellular laccase was responsible for DCF removal. Addition of mediator (1-hydroxybenzotriazole) to extracellular extract improved the removal of SMX which bears an electron donor group, but not that of the resistant compound CBZ.

Authors


Publication Date


  • 2013

Citation


  • Yang, S., Hai, F. I., Nghiem, L. D., Roddick, F. & Price, W. E. (2013). Removal of trace organic contaminants by nitrifying activated sludge and whole-cell and crude enzyme extract of Trametes versicolor. Water Science and Technology, 67 (6), 1216-1223.

Scopus Eid


  • 2-s2.0-84875994148

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1728&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/715

Has Global Citation Frequency


Number Of Pages


  • 7

Start Page


  • 1216

End Page


  • 1223

Volume


  • 67

Issue


  • 6

Place Of Publication


  • United Kingdom