title: Stability of multi-permeable reactive barriers for long term removal of mixed contaminants.
abstract: The Permeable Reactive Barriers (PRBs) are relatively simple, promising technology for groundwater remediation. A PRBs consisting of two reactive barriers (zero valent iron-barrier and bio-barrier) were designed to evaluate the application and feasibility of the barriers for the removal of wide range of pollutants from synthetic water. After 470 days of Multi-PRBs column operation, the pH level in the water sample is increased from 4 to 7, whereas the oxidation reduction potential (ORP) is decreased to -180 mV. Trichloroethylene (TCE), heavy metals, and nitrate were completely removed in the zero valent iron-barrier. Ammonium produced during nitrate reduction is removed in the biologically reactive zone of the column. The results of the present study suggest that Multi-PRBs system is an effective alternate method to confine wide range of pollutants from contaminated groundwater.
authors: Department of Environmental Engineering, The University of Seoul, Seoul 130-743, South Korea.
authors: Jai-Young
authors: JY
authors: Lee
authors: Kui-Jae
authors: KJ
authors: Lee
authors: Sun Young
authors: SY
authors: Youm
authors: Mi-Ran
authors: MR
authors: Lee
authors: Seralathan
authors: S
authors: Kamala-Kannan
authors: Byung-Taek
authors: BT
authors: Oh
mesh_terms: D000327:Adsorption; D001419:Bacteria / Q000378:metabolism; D004784:Environmental Monitoring; D052918:Environmental Restoration and Remediation / Q000379:methods*; D019015:Geologic Sediments; D007221:Industry; D008670:Metals / Q000032:analysis; D008855:Microscopy, Electron, Scanning; D010100:Oxygen / Q000032:analysis; D012408:Rubber; D014241:Trichloroethylene / Q000032:analysis; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical; D014241:Trichloroethylene; D012408:Rubber; D010100:Oxygen