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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.12
- 수록면
- 187 - 203 (17page)
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Chlorophenols (CPs) are widely used industrial chemicals that have been identified as being toxic to both humans and the environment. Zero valent iron (ZVI) and iron based bimetallic systems have the potential to efficiently dechlorinate CPs. This paper reviews the research conducted in this area over the past decade, with emphasis on the processes and mechanisms for the removal of CPs, as well as the characterization and role of the iron oxides formed on the ZVI surface. The removal of dissolved CPs in iron-water systems occurs via dechlorination, sorption and co-precipitation. Although ZVI has been commonly used for the dechlorination of CPs, its long term reactivity is limited due to surface passivation over time. However, iron based bimetallic systems are an effective alternative for overcoming this limitation. Bimetallic systems prepared by physically mixing ZVI and the catalyst or through reductive deposition of a catalyst onto ZVI have been shown to display superior performance over unmodified ZVI. Nonetheless, the efficiency and rate of hydrodechlorination of CPs by bimetals depend on the type of metal combinations used, properties of the metals and characteristics of the target CP. The presence and formation of various iron oxides can affect the reactivities of ZVI and bimetals. Oxides, such as green rust and magnetite, facilitate the dechlorination of CPs by ZVI and bimetals, while oxide films, such as hematite, maghemite, lepidocrocite and goethite, passivate the iron surface and hinder the dechlorination reaction. Key environmental parameters, such as solution pH, presence of dissolved oxygen and dissolved co-contaminants, exert significant impacts on the rate and extent of CP dechlorination by ZVI and bimetals.
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참고문헌 (154)
참고문헌 신청
1. [학술지(정기간행물)] - Keane MA / 2005 / A review of catalytic approaches to waste minimization:case study--liquid-phase catalytic treatment of chlorophenols / J. Chem. Technol. Biotechnol 80 : 1211 ~ 1222
2. [학술지(정기간행물)] - Arcand Y / 1995 / Solubility of pentachlorophenol in aqueous solutions: the pH effect / Water Res 29 : 131 ~ 136
3. [단행본] - Agency for Toxic Substances and Disease Registry / 1999 / Toxicological profile for chlorophenols. Atlanta: Agency for Toxic Substances and Disease Registry / U.S Department of Health and Human Services
4. [학술지(정기간행물)] - Pera-Titus M / 2004 / Degradation of chlorophenols by means of advanced oxidation processes: a general review / Appl. Catal. B. Environ 47 : 219 ~ 256
5. [학술지(정기간행물)] - Kim YH / 2003 / Dechlorination of chlorinated phenols by zero valent zinc / Environ. Technol 24 : 1455 ~ 1463
2. [학술지(정기간행물)] - Arcand Y / 1995 / Solubility of pentachlorophenol in aqueous solutions: the pH effect / Water Res 29 : 131 ~ 136
3. [단행본] - Agency for Toxic Substances and Disease Registry / 1999 / Toxicological profile for chlorophenols. Atlanta: Agency for Toxic Substances and Disease Registry / U.S Department of Health and Human Services
4. [학술지(정기간행물)] - Pera-Titus M / 2004 / Degradation of chlorophenols by means of advanced oxidation processes: a general review / Appl. Catal. B. Environ 47 : 219 ~ 256
5. [학술지(정기간행물)] - Kim YH / 2003 / Dechlorination of chlorinated phenols by zero valent zinc / Environ. Technol 24 : 1455 ~ 1463
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UCI(KEPA) : I410-ECN-0101-2017-539-001548024