한빛사논문
- 조회4,834
Abstract
Jong-Rok Jeona, b, Kumarasamy Murugesanb, In-Hyun Namc, Yoon-Seok Changb,*
a Corporate R&D, LG Chem Research Park, Daejeon 305-380, Korea
b School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Korea
c Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 305-380, Korea
*Corresponding author at: Yoon-Seok Chang, School of Environmental Science and Engineering, POSTECH, Pohang, 790-784, Korea.
Abstract
The continuous release of toxic persistent organic pollutants (POPs) into the environment has raised a need for effective cleanup methods. The tremendous natural diversity of microbial catabolic mechanisms suggests that catabolic routes may be applied to the remediation of POPs-contaminated fields. A large number of the recalcitrant xenobiotics have been shown to be removable via the natural catabolic mechanisms of microbes, and detailed biochemical studies of the catabolic methods, together with the development of sophisticated genetic engineering, have led to the use of synthetic microbes for the bioremediation of POPs. However, the steric effects of substituted halogen moieties, microbe toxicity, and the low bioavailability of POPs still deteriorate the efficiency of removal strategies based on natural and synthetic catabolic mechanisms. Recently, abiotic redox processes that induce rapid reductive dehalogenation, hydroxyl radical-based oxidation, or electron shuttling have been reasonably coupled with microbial catabolic actions, thereby compensating for the drawbacks of biotic processes in POPs removal. In this review, we first compare the pros and cons of individual methodologies (i.e., the natural and synthetic catabolism of microbes and the abiotic processes involving zero-valent irons, advanced oxidation processes, and small organic stimulants) for POPs removal. We then highlight recent trends in coupling the biotic-abiotic methodologies and discuss how the processes are both feasible and superior to individual methodologies for POPs cleanup. Cost-effective and environmentally sustainable abiotic redox actions could enhance the microbial bioremediation potential for POPs.
Keywords : Persistent organic pollutants; microbial catabolism; biodegradation; coupling processes; zero-valent irons; advanced oxidation processes; small organic stimulants
논문정보
- Review Paper
- 2012년 11월 (BRIC 등록일 )
- 국내 연구진
- 생명과학 > 생물공학
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