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REMEDIATION APPROACH FOR ORGANIC COMPOUNDS AND ARSENIC CO-CONTAMINATED SOIL USING THE PRESSURIZED HOT WATER EXTRACTION PROCESS
Islam, M.N., Y.-T. Jo, Y.-J. Jeong, and J.-H. Park.
Environmental Remediation 40(1):125-131(2019)

The treatment effectiveness of a pressurized hot water (PHW) extraction process was measured on soil co-contaminated with phenol, crude oil, PAHs, and As. Heating to 260°C for 90 min eliminated ~99% of phenol, 63-100% of PAHs, 86% of petroleum hydrocarbon, and 67% As. Organic contaminants were mainly removed by desorption, dissolution, and degradation in subcritical water, while As was potentially eliminated by oxidation and dissolution of As-bearing minerals.



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