| Title: | Removal of trace organic contaminants by an MBR comprising a mixed culture of bacteria and white-rot fungi |
| Author(s): | Nguyen LN; Hai FI; Yang S; Kang J; Leusch FD; Roddick F; Price WE; Nghiem LD; |
| Address: | "Strategic Water Infrastructure Laboratory, School of Civil, Mining and Environmental Engineering, University of Wollongong, Wollongong, NSW 2522, Australia" |
| DOI: | 10.1016/j.biortech.2013.08.142 |
| ISSN/ISBN: | 1873-2976 (Electronic) 0960-8524 (Linking) |
| Abstract: | "The degradation of 30 trace organic contaminants (TrOC) by a white-rot fungus-augmented membrane bioreactor (MBR) was investigated. The results show that white-rot fungal enzyme (laccase), coupled with a redox mediator (1-hydroxy benzotriazole, HBT), could degrade TrOC that are resistant to bacterial degradation (e.g. diclofenac, triclosan, naproxen and atrazine) but achieved low removal of compounds (e.g. ibuprofen, gemfibrozil and amitriptyline) that are well removed by conventional activated sludge treatment. Overall, the fungus-augmented MBR showed better TrOC removal compared to a system containing conventional activated sludge. The major role of biodegradation in removal by the MBR was noted. Continuous mediator dosing to MBR may potentially enhance its performance, although not as effectively as for mediator-enhanced batch laccase systems. A ToxScreen3 assay revealed no significant increase in the toxicity of the effluent during MBR treatment of the synthetic wastewater comprising TrOC, confirming that no toxic by-products were produced" |
| Keywords: | "Adsorption Bacteria/*metabolism Batch Cell Culture Techniques Biodegradation, Environmental Bioreactors/*microbiology Laccase/metabolism *Membranes, Artificial Organic Chemicals/*isolation & purification Trametes/*metabolism Waste Disposal, Fluid Water Po;" |
| Notes: | "MedlineNguyen, Luong N Hai, Faisal I Yang, Shufan Kang, Jinguo Leusch, Frederic D L Roddick, Felicity Price, William E Nghiem, Long D eng Research Support, Non-U.S. Gov't England 2013/09/21 Bioresour Technol. 2013 Nov; 148:234-41. doi: 10.1016/j.biortech.2013.08.142. Epub 2013 Aug 31" |
