Abstract：To investigate the removal efficiency of trichloroethylene (TCE) in sandy loam, the oxidant of sodium persulfate (Na2S2O8) and activating agent of citrate acid (CA) chelated with ferrous iron (Fe Ⅱ) were wsed. The orthogonal test showed that the removal efficiency of TCE was over 93% with different TCE treatments under the optimized experimental condition consisting of 5 mmol/L of Na2S2O8, 2.5 mmol/L of Fe(Ⅱ) and 0.25 mmol/L CA with 30 min of reaction time. For soil with higher TCE level, sequential oxidation treatment could remove more contaminant. In addition, results from soil column experiments showed that: more than 88.9% of TCE was oxidized by Na2S2O8 after 7 d; and the removal rate of TCE was relevant to the way of Na2S2O8 addition which sequential addition could achieved the best efficiency.
蔡信德, 吴嘉怡, 杜文婷, 李荣飞, 李诗殷, 杨子江. 过硫酸钠对砂壤土中三氯乙烯的氧化研究[J]. 中国环境科学, 2012, 32(7): 1263-1267.
CAI Xin-De, WU Jia-Yi, DU Wen-Ting, LI Rong-Fei, LI Shi-Yin, YANG Zi-Jiang. Removal efficiency of trichloroethylene from the contaminated sandy loam soil using sodium persulfate. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(7): 1263-1267.
