Removal of aqueous organic pollutants with hydrogen peroxide-enhanced iron mediated aeration

Yang Deng, James D. Englehardt

Research output: Contribution to journalConference articlepeer-review

Abstract

Elemental iron in the presence of molecular oxygen has recently been demonstrated to partially oxidize organic compounds. An iron-mediated aeration (IMA) process, enhanced with hydrogen peroxide, is described. Mechanisms and treatment efficiencies of the process are investigated. Decomposition kinetics constants of phenol are compared with and without para-chlorobenzoic acid (pCBA), a radical scavenger, at neutral pH. All four operating factors significantly affected COD removal. At neutral pH and room temperature, 50% of the COD was removed within 9 hr due to both coagulation and oxidation. Coagulation is ascribed to formation of iron sludge as an oxidation product of elemental iron. Hydrogen peroxide-enhanced IMA is a promising technology in treatment of high strength organic wastewater. This is an abstract of a paper presented at the 231th ACS National Meeting (Atlanta, GA 3/26-30/2006).

Original languageEnglish
JournalACS National Meeting Book of Abstracts
Volume231
StatePublished - 28 Jun 2006
Event231th ACS National Meeting - Atlanta, GA, United States
Duration: 26 Mar 200630 Mar 2006

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