title: Remediation of chromium-contaminated water using biogenic nano-sized materials and metal-reducing bacteria.
abstract: As an environmental nanotechnology, nano-sized materials have the potential to create novel and effective in-situ and ex-situ treatments for contaminated groundwater due to its high catalytic reactivity, large surface area, and dispersibility. In this study the efficiency of Cr(VI) reduction and immobilization using biotic and abiotic nano-sized materials (NSMs) and metal-reducing bacteria (MRB) was evaluated to remediate Cr(VI)-contaminated groundwater in batch and column tests. The results of this study revealed that the combination of the mixed MRB and bio-FeS/siderite performed the highest efficiency of Cr(VI) reduction and immobilization. Cr(VI) reduction by MRB and NSMs could impact on solubility of Cr(VI) and geochemical changes favorable for precipitation and adsorption.
authors.affiliation: Department of Earth and Environmental Sciences, Chonnam National University, Gwangju 500-757, Korea.
authors.forename: Hyunhee
authors.initials: H
authors.lastname: Seo
authors.forename: Eunyoung
authors.initials: E
authors.lastname: Sun
authors.forename: Yul
authors.initials: Y
authors.lastname: Roh
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D002857:Chromium / Q000378:metabolism*; D052918:Environmental Restoration and Remediation; D008670:Metals / Q000378:metabolism*; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical; D002857:Chromium