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THE COMBINED EFFECTS OF SURFACTANT SOLUBILIZATION AND CHEMICAL OXIDATION ON THE REMOVAL OF POLYCYCLIC AROMATIC HYDROCARBON FROM SOIL
LI, Y., X. Liao, S.G. Huling, T. Xue, Q. Liu, H. Cao, and Q. Lin.
Science of the Total Environment 647:1106-1112(2019)
A study was conducted to determine whether a combination of surfactant-aided soil washing and chemical oxidation by activated persulfate (SP) was effectively remediating PAH-contaminated soil. Triton X-100 (TX-100) and SP were applied to contaminated soil concurrently and sequentially. Results indicated that surfactant followed by amendment with a solution of TX-100+SP was most effective in decreasing PAH concentrations in sandy loam (from 1220 mg/kg to 414 mg/kg) and silty clay (2730 mg/kg to 180 mg/kg) soils. Compared with TX-100 alone and SP alone, TX-100+SP increased the removal of PAHs by 10-20% and exhibited greater reduction of oxygenated PAHs, including furans and xanthene. TX-100 improved the degradation of 3-4 ring PAHs and 5-6 ring PAHs in sandy loam soil by ~8%-11%.
Science of the Total Environment 647:1106-1112(2019)
A study was conducted to determine whether a combination of surfactant-aided soil washing and chemical oxidation by activated persulfate (SP) was effectively remediating PAH-contaminated soil. Triton X-100 (TX-100) and SP were applied to contaminated soil concurrently and sequentially. Results indicated that surfactant followed by amendment with a solution of TX-100+SP was most effective in decreasing PAH concentrations in sandy loam (from 1220 mg/kg to 414 mg/kg) and silty clay (2730 mg/kg to 180 mg/kg) soils. Compared with TX-100 alone and SP alone, TX-100+SP increased the removal of PAHs by 10-20% and exhibited greater reduction of oxygenated PAHs, including furans and xanthene. TX-100 improved the degradation of 3-4 ring PAHs and 5-6 ring PAHs in sandy loam soil by ~8%-11%.
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