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Effect of inorganic, synthetic and naturally occurring chelating agents on Fe(II) mediated advanced oxidation of chlorophenols.
Water Res. 2009 Feb; 43(3):684-94.WR

Abstract

This study examines the feasibility and application of Advanced Oxidation Technologies (AOTs) for the treatment of chlorophenols that are included in US EPA priority pollutant list. A novel class of sulfate/hydroxyl radical-based homogeneous AOTs (Fe(II)/PS, Fe(II)/PMS, Fe(II)/H2O2) was successfully tested for the degradation of series of chlorophenols (4-CP, 2,4-CP, 2,4,6-CP, 2,3,4,5-CP). The major objective of the present study was to evaluate the effectiveness of three representative chelating agents (citrate, ethylenediaminedisuccinate (EDDS), and pyrophosphate) on Fe(II)-mediated activation of three common peroxide (peroxymonosulfate (PMS), persulfate (PS), and hydrogen peroxide (H2O2)) at neutral pH conditions. Short term (4 h) and long term (7 days) experiments were conducted to evaluate the kinetics and longevity of different oxidative systems for 4-chlorophenol degradation. Results showed that each of the iron-chelating agent couple was superior in activating a particular oxidant and consequently for 4-CP degradation. In case of Fe(II)/PMS system, the inorganic chelating agent pyrophosphate showed effective activation of PMS whereas very fast dissociation of PMS was recorded in the case of EDDS without any apparent 4-CP degradation. In Fe(II)/H2O2 system, EDDS was proven to be the most effective whereas pyrophosphate showed negligible activation of H2O2. Fe(II)/Citrate system showed moderate activation of all three oxidants. PMS was found to be the most universal oxidant, which was activated by all three iron-chelating agent systems and Fe(II)/Citrate was the most universal chelating agent system, which was able to activate all three oxidants to a certain extent.

Authors+Show Affiliations

Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221-0071, USA.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

19038413

Citation

Rastogi, Aditya, et al. "Effect of Inorganic, Synthetic and Naturally Occurring Chelating Agents On Fe(II) Mediated Advanced Oxidation of Chlorophenols." Water Research, vol. 43, no. 3, 2009, pp. 684-94.
Rastogi A, Al-Abed SR, Dionysiou DD. Effect of inorganic, synthetic and naturally occurring chelating agents on Fe(II) mediated advanced oxidation of chlorophenols. Water Res. 2009;43(3):684-94.
Rastogi, A., Al-Abed, S. R., & Dionysiou, D. D. (2009). Effect of inorganic, synthetic and naturally occurring chelating agents on Fe(II) mediated advanced oxidation of chlorophenols. Water Research, 43(3), 684-94. https://doi.org/10.1016/j.watres.2008.10.045
Rastogi A, Al-Abed SR, Dionysiou DD. Effect of Inorganic, Synthetic and Naturally Occurring Chelating Agents On Fe(II) Mediated Advanced Oxidation of Chlorophenols. Water Res. 2009;43(3):684-94. PubMed PMID: 19038413.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of inorganic, synthetic and naturally occurring chelating agents on Fe(II) mediated advanced oxidation of chlorophenols. AU - Rastogi,Aditya, AU - Al-Abed,Souhail R, AU - Dionysiou,Dionysios D, Y1 - 2008/11/06/ PY - 2008/07/25/received PY - 2008/10/16/revised PY - 2008/10/28/accepted PY - 2008/11/29/pubmed PY - 2009/3/26/medline PY - 2008/11/29/entrez SP - 684 EP - 94 JF - Water research JO - Water Res VL - 43 IS - 3 N2 - This study examines the feasibility and application of Advanced Oxidation Technologies (AOTs) for the treatment of chlorophenols that are included in US EPA priority pollutant list. A novel class of sulfate/hydroxyl radical-based homogeneous AOTs (Fe(II)/PS, Fe(II)/PMS, Fe(II)/H2O2) was successfully tested for the degradation of series of chlorophenols (4-CP, 2,4-CP, 2,4,6-CP, 2,3,4,5-CP). The major objective of the present study was to evaluate the effectiveness of three representative chelating agents (citrate, ethylenediaminedisuccinate (EDDS), and pyrophosphate) on Fe(II)-mediated activation of three common peroxide (peroxymonosulfate (PMS), persulfate (PS), and hydrogen peroxide (H2O2)) at neutral pH conditions. Short term (4 h) and long term (7 days) experiments were conducted to evaluate the kinetics and longevity of different oxidative systems for 4-chlorophenol degradation. Results showed that each of the iron-chelating agent couple was superior in activating a particular oxidant and consequently for 4-CP degradation. In case of Fe(II)/PMS system, the inorganic chelating agent pyrophosphate showed effective activation of PMS whereas very fast dissociation of PMS was recorded in the case of EDDS without any apparent 4-CP degradation. In Fe(II)/H2O2 system, EDDS was proven to be the most effective whereas pyrophosphate showed negligible activation of H2O2. Fe(II)/Citrate system showed moderate activation of all three oxidants. PMS was found to be the most universal oxidant, which was activated by all three iron-chelating agent systems and Fe(II)/Citrate was the most universal chelating agent system, which was able to activate all three oxidants to a certain extent. SN - 0043-1354 UR - https://www.unboundmedicine.com/medline/citation/19038413/Effect_of_inorganic_synthetic_and_naturally_occurring_chelating_agents_on_Fe_II__mediated_advanced_oxidation_of_chlorophenols_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(08)00525-3 DB - PRIME DP - Unbound Medicine ER -