PMID- 23153459 OWN - NLM STAT- MEDLINE DCOM- 20130820 LR - 20131121 IS - 1873-1899 (Electronic) IS - 0734-9750 (Linking) VI - 31 IP - 2 DP - 2013 Mar-Apr TI - Coupling microbial catabolic actions with abiotic redox processes: a new recipe for persistent organic pollutant (POP) removal. PG - 246-56 LID - S0734-9750(12)00187-5 [pii] LID - 10.1016/j.biotechadv.2012.11.002 [doi] AB - 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 POP-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 POP 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 POP 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 POP cleanup. Cost-effective and environmentally sustainable abiotic redox actions could enhance the microbial bioremediation potential for POPs. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Jeon, Jong-Rok AU - Jeon JR AD - Corporate R&D, LG Chem Research Park, Daejeon 305-380, Republic of Korea. FAU - Murugesan, Kumarasamy AU - Murugesan K FAU - Nam, In-Hyun AU - Nam IH FAU - Chang, Yoon-Seok AU - Chang YS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20121112 PL - England TA - Biotechnol Adv JT - Biotechnology advances JID - 8403708 RN - 0 (Environmental Pollutants) RN - 0 (Organic Chemicals) RN - E1UOL152H7 (Iron) SB - IM MH - *Biodegradation, Environmental MH - Biotechnology/*methods MH - Cost-Benefit Analysis MH - Environmental Pollutants/chemistry/*metabolism MH - Industrial Microbiology/*methods MH - Iron/metabolism MH - Organic Chemicals/chemistry/*metabolism MH - Oxidation-Reduction EDAT- 2012/11/17 06:00 MHDA- 2013/08/21 06:00 CRDT- 2012/11/17 06:00 PHST- 2012/06/15 00:00 [received] PHST- 2012/10/01 00:00 [revised] PHST- 2012/11/03 00:00 [accepted] PHST- 2012/11/17 06:00 [entrez] PHST- 2012/11/17 06:00 [pubmed] PHST- 2013/08/21 06:00 [medline] AID - S0734-9750(12)00187-5 [pii] AID - 10.1016/j.biotechadv.2012.11.002 [doi] PST - ppublish SO - Biotechnol Adv. 2013 Mar-Apr;31(2):246-56. doi: 10.1016/j.biotechadv.2012.11.002. Epub 2012 Nov 12.