Trichloroethylene (TCE) removal performance in non-ionic surfactant Tween-80 (TW-80) and anionic surfactant sodium dodecyl sulfate (SDS) involved solution by Fe(II) activated persulfate (PS) was investigated through the strengthening of nanoscale zero valent iron (nZVI). 99.5% removal of TCE could be obtained at the PS/Fe(II)/nZVI/TCE molar ratio of 8/4/4/1 with 1.0 critical micelle concentration (CMC) of TW-80 presence (13 mg L⁻¹), while this value was slightly decreased to 88.3% at the molar ratio of 40/20/20/1 with 1.0 CMC of SDS presence (2.3 g L⁻¹) in 180 min. The addition of nZVI significantly promoted TCE degradation, while TW-80 or SDS definitely inhibited TCE removal. Further, TCE removal declined with TW-80 or SDS concentration increasing from 0 to 10 CMC, and continuously decreased at 20 CMC of TW-80 but elevated TCE removal at 20 CMC of SDS. Tests of radical scavengers revealed that HO and SO₄⁻ contributed a major part while O₂⁻ had less contribution to TCE degradation in PS/Fe(II)/nZVI system. The dichlorination of TCE in PS/Fe(II)/nZVI system was 94.5% with TW-80 and 97.2% with SDS. In addition, TCE (with TW-80) removal was decreased with the initial pH increase from 3.0 to 11.0, while TCE (with SDS) degradation was always beyond 83% in the initial pH change from 3.0 to 11.0. Moreover, the effects of inorganic anions (Cl⁻, HCO₃⁻) in the solution were evaluated. Experimental results using the actual groundwater revealed the excellent availability of PS/Fe(II)/nZVI system in remediating TCE contaminated field involved with TW-80 or SDS surfactants. In summary, these findings provide a new direction in remediating groundwater from contaminated sites polluted by chlorinated organic solvents after pretreatment by surfactant solubilization.

通过强化纳米级零价铁，研究了非离子型表面活性剂Tween-80（TW-80）和阴离子型表面活性剂十二烷基硫酸钠（SDS）参与溶液中三氯乙烯（TCE）的Fe（II）活化过硫酸盐（PS）脱除性能。 （nZVI）。在PS / Fe（II）/ nZVI / TCE摩尔比为8/4/4/1且TW-80存在的1.0临界胶束浓度（CMC）（13 mg L ^-1）下，可以获得99.5％的TCE去除。，而当存在1.0 CMC的SDS（2.3 g L ^-1）在180分钟内。nZVI的添加显着促进了TCE的降解，而TW-80或SDS无疑抑制了TCE的去除。此外，随着TW-80或SDS浓度从0增加到10 CMC，TCE去除率下降，并且在TW-80的20 CMC处，TCE去除率持续下降，而在SDS的20 CMC时，TCE去除率升高。自由基清除剂的测试结果表明，HO和SO ₄ ^-贡献的主要部分而ö ₂ ^-在PS / Fe（II）/ nZVI系统中对TCE降解的贡献较小。PS / Fe（II）/ nZVI体系中TCE的二氯化二氯含量为TW-80的94.5％和SDS的97.2％。此外，随着初始pH从3.0升高到11.0，TCE（含TW-80）的去除率降低，而在初始pH从3.0变为11.0时，TCE（含SDS）的降解始终超过83％。此外，无机阴离子（Cl组成的效果^-，HCO ₃ ^-）在溶液中进行评估。使用实际地下水的实验结果表明，PS / Fe（II）/ nZVI系统在修复与TW-80或SDS表面活性剂有关的TCE污染场地方面具有极好的可用性。总而言之，这些发现为在通过表面活性剂增溶预处理后从受氯代有机溶剂污染的受污染场地中修复地下水提供了新的方向。