Use of green washing fluids in a washing process for dioxin contaminated soils

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Keywords:
Hazardous waste treatment Green remediation Sustainable remediation Green and sustainable remediation Soil washing Dioxins contaminated soil

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Siwalee Yotapukdee
Department of Marine Environmental Engineering, College of Ocean Engineering, National Kaohsiung Marine University, Nanzih District, Kaohsiung City 81157, Taiwan
Chitsan Lin
Department of Marine Environmental Engineering, College of Ocean Engineering, National Kaohsiung Marine University, Nanzih District, Kaohsiung City 81157, Taiwan
Jr-Ping Wang
Department of Naval Architecture, College of Ocean Engineering, National Kaohsiung Marine University, Nanzih District, Kaohsiung City 81157, Taiwan
Wen-Yen Huang
Department of Marine Environmental Engineering, College of Ocean Engineering, National Kaohsiung Marine University, Nanzih District, Kaohsiung City 81157, Taiwan
Acharee Kaewlaoyoong
Department of Safety, Health and Environmental Engineering, College of Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung City 82445, Taiwan
Wen-Ming Mao
Department of Marine Environmental Engineering, College of Ocean Engineering, National Kaohsiung Marine University, Nanzih District, Kaohsiung City 81157, Taiwan
Shun-Hsyung Chang
Department of Microelectronics Engineering, College of Ocean Engineering, National Kaohsiung Marine University, Nanzih District, Kaohsiung City 81157, Taiwan

Abstract

High levels of dioxin contamination in soil have significant environmental challenges. Soil washing is a successful remediation process that is primarily used to treat coarse soils. Several literature studies have used various kinds of chemical washing liquids to remove dioxins from soils, though there are secondary environmental effects. This study intends to develop environmentally friendly soil washing methods that are effective in dioxin removal at an acceptable cost. Sugarcane wine, compost leachate, and ground fish broth were chosen as potential washing liquids. Each washing liquid was analyzed to determine its content of semivolatile organic compounds (SVOCs) and volatile organic compounds (VOCs). These compounds are related to their bio-surfactant content. Several of the identified compounds had properties to help remove dioxins from contaminated soil. In the experiments, high removal efficiencies were observed, up to 70%~95% after five to six washes. Although effective removal was observed, a significant amount of wastewater was produced and the problems were not completely resolved. Thus, the optimal washing conditions are necessary to minimize the overall costs, while improving the process effectiveness. Moreover, an appropriate treatment method is required for wastewater containing dioxins.

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How to Cite
Yotapukdee, S., Lin, C., Wang, J.-P., Huang, W.-Y., Kaewlaoyoong, A., Mao, W.-M., & Chang, S.-H. (2017). Use of green washing fluids in a washing process for dioxin contaminated soils. Engineering and Applied Science Research, 44(3), 193–195. Retrieved from https://ph01.tci-thaijo.org/index.php/easr/article/view/97567
Issue
Vol. 44 No. 3 (2017)
Section
ORIGINAL RESEARCH

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