Degradation of triclosan by an integrated nano-bio redox process
SCIE
SCOPUS
- Title
- Degradation of triclosan by an integrated nano-bio redox process
- Authors
- Bokare, V; Murugesan, K; Kim, YM; Jeon, JR; Kim, EJ; Chang, YS
- Date Issued
- 2010-08
- Publisher
- ELSEVIER SCI LTD
- Abstract
- In this study, a sequential reduction-oxidation method was developed for complete degradation of triclosan (2,4,4'-trichloro-2'-hydroxydiphenyl ether, TCS) in aqueous solution. Rapid reductive dechlorination of TCS was achieved with palladized zero-valent iron nanoparticles (Pd/nFe), under anaerobic conditions, with generation of 2-phenoxyphenol as the sole dechlorination product. Sequentially, 2-phenoxyphenol was transformed into a non-toxic polymer using laccase (EC:1.10.3.2) derived from Trametes versicolor in the presence of natural redox mediator syringaldehyde (SYD). High performance liquid chromatography combined with electrospray ionization mass spectroscopy (HPLC-ESI-MS) revealed the formation of dimer and trimer products during the laccase-mediated transformation process. The efficiency of the integrated method is critically dependent on the Fe2+ concentration, which was effectively controlled by optimizing the solution pH. To the best of our knowledge, this is the first report of a redox two-step hybrid system for the complete transformation of TCS into non-toxic products. (C) 2010 Elsevier Ltd. All rights reserved.
- Keywords
- Triclosan; Pd/nFe; Laccase; 2-Phenoxyphenol; Redox process; ENDOCRINE-DISRUPTING CHEMICALS; WASTE-WATER TREATMENT; OXIDATIVE TRANSFORMATION; PYCNOPORUS-CINNABARINUS; TRAMETES-VERSICOLOR; AQUATIC ENVIRONMENT; SURFACE WATERS; METAL-IONS; LACCASE; MEDIATORS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25404
- DOI
- 10.1016/J.BIORTECH.2010.03.062
- ISSN
- 0960-8524
- Article Type
- Article
- Citation
- BIORESOURCE TECHNOLOGY, vol. 101, no. 16, page. 6354 - 6360, 2010-08
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.