Environmental assessment on electrokinetic remediation of multimetal-contaminated site: a case study

Title
Environmental assessment on electrokinetic remediation of multimetal-contaminated site: a case study
Authors
Do-Hyung KimJong-Chan YooBo-Ram Hwang양중석Kitae Baek
Keywords
environmental assessment; Electrokintic remediation; Multimetal-contaminated site; Green and sustainable remediation
Issue Date
2014-05
Publisher
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Citation
VOL 21, NO 10, 6751-6758
Abstract
In this study, an environmental assessment on an electrokinetic (EK) system for the remediation of a multimetal-contaminated real site was conducted using a green and sustainable remediation (GSR) tool. The entire EK process was classified into major four phases consisting of remedial investigations (RIs), remedial action construction (RAC), remedial action operation (RAO), and long-term monitoring (LTM) for environmental assessment. The environmental footprints, including greenhouse gas (GHG) emissions, total energy used, air emissions of criteria pollutants, such as NOx, SOx, and PM10, and water consumption, were calculated, and the relative contribution in each phase was analyzed in the environmental assessment. In the RAC phase, the relative contribution of the GHG emissions, total energy used, and PM10 emissions were 77.3, 67.6, and 70.4 %, respectively, which were higher than those of the other phases because the material consumption and equipment used for system construction were high. In the RAO phase, the relative contributions of water consumption and NOx and SOx emissions were 94.7, 85.2, and 91.0 %, respectively, which were higher than those of the other phases, because the water and electricity consumption required for system operation was high. In the RIs and LTM phases, the environmental footprints were negligible because the material and energy consumption was less. In conclusion, the consumable materials and electrical energy consumption might be very important for GSR in the EK remediation process, because the production of consumable materials and electrical energy consumption highly affects the GHG emissions, total energy used, and air emissions such as NOx and SOx.
URI
http://pubs.kist.re.kr/handle/201004/47640
ISSN
09441344
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KIST Publication > Article
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