HR: 1340h
AN: V43B-1574    [Abstracts]
TI: The effect of ionic strength and hardness of trichloroethylene contaminated groundwater in remediation using granular activated carbon
AU: * Heo, J
EM: airmax78@snu.ac.kr
AF: Joong-Hyeok, Heo, School of Earth and Environmental Sciences, Seoul National University, Sillim 9-dong, Kwanak-gu, Seoul, 151-747 Korea, Republic of
AU: Chang, H
V43B-1574 AF: Joong-Hyeok, Heo, School of Earth and Environmental Sciences, Seoul National University, Sillim 9-dong, Kwanak-gu, Seoul, 151-747 Korea, Republic of
AB: The objective of this study is to evaluate the trichloroethylene (TCE) removal by granular activated carbon (GAC) based on influential factors (ionic strength, hardness) of various groundwaters. The experimental method used in this study was batch experiments. Synthetic groundwater for test was made according to ionic strength, hardness and then it was artificially contaminated by TCE 5ppm. The variation of ions in synthetic groundwater was measured by I.C. and I.C.P. Surface area of GAC was determined by the Brunauer, Emmett and Teller (BET) adsorption data. The results of tests showed that TCE removal using GAC is affected by the hardness of synthetic groundwaters. It was founded that surface area of GAC was decreased by increasing of ions. Due to pore blocking of ions by functional group, the surface area of GAC decreased and the difference of the remediation appeared. This result was affected by the ionic strength and hardness of water. Therefore, the ionic strength and hardness of contaminated groundwater must be considered in remediation using GAC.
DE: 1000 GEOCHEMISTRY
DE: 1022 Composition of the hydrosphere
DE: 1055 Organic and biogenic geochemistry
DE: 1065 Major and trace element geochemistry
DE: 1099 General or miscellaneous
SC: Volcanology, Geochemistry, Petrology [V]
MN: Fall Meeting 2005