The effect of dissolved organic matter on soybean peroxidase-mediated removal of triclosan in water
Abstract Dissolved organic matter (DOM) is ubiquitous in water and involved in numerous important chemical processes in aqueous systems, enabling it a unique challenge for a variety of water treatment processes. Soybean peroxidase (SBP)-based enzymatic process, as a promising treatment technique, has been successfully applied to remove pollutants in wastewaters such as coal-tar and refinery wastewater. In this study, the effect of DOM on the removal of polychlorinated aromatic antimicrobials triclosan (TCS) by SBP was investigated. Our results suggested that DOM significantly suppressed the catalytic performance of SBP to TCS, presumably resulting from the competition of the phenolic moiety in DOM structure as the active substrate of SBP via the analysis of excitation emission matrix (EEM) spectra of DOM. Although the product species of TCS in SBP-mediated system with DOM has no change compared with the system without DOM, the yields of self-coupling products relative to total transformed TCS were remarkably reduced in the presence of DOM, suggesting that DOM participated in the oxidative coupling reactions. Cross-coupling between TCS and DOM was also verified using guaiacol as a model DOM constituent. Moreover, the products including self-coupling products and co-polymers in SBP-mediated TCS reaction system with DOM were innocuous through growth inhibition assay of S. obliquus . Highlights DOM significantly suppressed triclosan (TCS) removal by soybean peroxidase (SBP). Phenolic moiety of DOM was the active substrate of SBP, and competitive with TCS. Cross-coupling between DOM and TCS affected products distribution of TCS. Self-coupling or co-polymers of TCS with DOM was innocuous to the growth of alga.
- 원문이 없습니다.
- DOI : http://dx.doi.org/10.1016/j.chemosphere.2017.01.013
- Elsevier : 저널> 권호 > 논문
유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.
원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.
NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.
- 이 논문과 함께 출판된 논문 + 더보기