title: Application of activated carbon impregnated with metal oxides to the treatment of multi-contaminants.
abstract: In this study, as a novel technique for the simultaneous treatment of As(III) and phenol in a single column reactor, different ratios of manganese-impregnated activated carbon (Mn-AC) and iron-impregnated activated carbon (Fe-AC) were applied in a bench-scale column reactor. In this bench-scale test, the column system packed with both Mn-AC and Fe-AC (binary system) was identified as the best system due to the good oxidation efficiency of As(III) to As(V) by Mn-AC, which reasonably controlled the mobility of total arsenic through adsorption of As(V), along with efficient removal of phenol . When the pilot-scale column reactor, packed with equal amounts of Mn-AC and Fe-AC, was applied for the removal of As(III) and phenol, the oxidation of As(III) by 1 g of Mn-AC for up to 110 days and the removal of phenol by total 1 g of Mn-AC and Fe-AC for up to 100 days were 1.81 x 10(-4) g and 8.20 x 10(-4) g, respectively. Based on this work, Fe-AC and Mn-AC can be regarded as a promising filter material in the treatment of wastewater contaminated with organic compounds, such as phenol, and redox-sensitive ions, such as As(III).
authors.affiliation: Department of Environmental Engineering, Kwangwoon University, Seoul, Korea.
authors.forename: Mok-Ryun
authors.initials: MR
authors.lastname: Yu
authors.forename: Yoon-Young
authors.initials: YY
authors.lastname: Chang
authors.forename: Jae-Kyu
authors.initials: JK
authors.lastname: Yang
mesh_terms: D000327:Adsorption; D001151:Arsenic / Q000737:chemistry*; D002606:Charcoal; D005374:Filtration / Q000295:instrumentation / Q000379:methods; D007501:Iron / Q000737:chemistry; D008345:Manganese / Q000737:chemistry; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry; D019800:Phenol / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
chemical_list: D010087:Oxides; D014874:Water Pollutants, Chemical; D002606:Charcoal; D019800:Phenol; D008345:Manganese; D007501:Iron; D001151:Arsenic