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Contaminated site remedial investigation and feasibility removal of chlorinated volatile organic compounds from groundwater by activated carbon fiber adsorption.
Yu, J J; Chou, S Y.
Afiliação
  • Yu JJ; Department of Environmental Engineering and Science, Feng-Chia University, Taichung, Taiwan, ROC. jjyu@fcu.edu.tw
Chemosphere ; 41(3): 371-8, 2000 Aug.
Article em En | MEDLINE | ID: mdl-11057599
ABSTRACT
Groundwater contaminated by dense, non-aqueous phase liquids (DNAPLs) such as chlorinated solvents has become a serious problem in some regions of Taiwan. The sources of these contaminants are due to industrial discharges. These chlorinated volatile organic compounds (VOCs) have been proven to be carcinogenic to humans. The groundwater is used for domestic drinking water supply in some cities of Taiwan and the severely contaminated groundwater has to be treated in order to meet the requirement of drinking water standards. This study covers two areas of work. In the first part, polluted groundwater samples were collected from the contaminated site and analytical results indicated measurable concentrations of 12 representative chlorinated VOCs in water samples. The primary VOCs detected included trichloroethene (TCE), tetrachloroethene (PCE), 1,1,2-trichloroethane (1,1,2-TCA), and 1,1-dichloroethene (1,1-DCE). Second, to remove VOCs groundwater was treated using adsorption on activated carbon fiber (ACF). This involved pumping groundwater through vessels containing ACF. Most VOCs, including TCE, PCE, 1,1,2-TCA, and DCE, were readily adsorbed onto ACF and are removed from the water stream. Our study showed that the technology was able to significantly reduce chlorinated VOCs concentrations in groundwater.
Assuntos
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Base de dados: MEDLINE Assunto principal: Solventes / Poluentes Químicos da Água / Carvão Vegetal / Purificação da Água / Água Doce / Hidrocarbonetos Clorados Limite: Humans País/Região como assunto: Asia Idioma: En Ano de publicação: 2000 Tipo de documento: Article
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Base de dados: MEDLINE Assunto principal: Solventes / Poluentes Químicos da Água / Carvão Vegetal / Purificação da Água / Água Doce / Hidrocarbonetos Clorados Limite: Humans País/Região como assunto: Asia Idioma: En Ano de publicação: 2000 Tipo de documento: Article