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首页> 外文期刊>Advances in Environmental Technology >Fast and environmental-friendly degradation of tert-butyl mercaptan from contaminated soil using bimetallic-modified Fenton process
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Fast and environmental-friendly degradation of tert-butyl mercaptan from contaminated soil using bimetallic-modified Fenton process

机译：使用双金属改性的Fenton工艺从受污染的土壤中快速，环保地降解叔丁基硫醇

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In this work, the fast remediation of tert-butyl mercaptan from the polluted soil via a bimetallic Fenton treatment that included Fe2+/Fe3+/Fe0/Cu2+ in the presence of gasoline was studied. The analysis of variance and the Pareto analysis resulting from the central composite design (CCD) showed that the H2O2, CuSO4, Fe3O4 nanoparticles, nano zerovalent iron (nZVI), and gasoline initial concentrations as a secondary contaminant were influential factors on the removal efficiency of tert-butyl mercaptan (with an effectiveness of 2.09%, 13.38%, 1.92%, 2.01%, and 39.73% respectively). Moreover, the interaction of H2O2ZVI, H2O2Fe3O4, H2O2/CuSO4, nZVIFe3O4, and nZVI/CuSO4 had a positive effect on removal efficiency, while nFe3O4/CuSO4 had a negative one. Surprisingly, the mixing of nZVI and nFe3O4 before adding them to the reactor did not affect the removal efficiency. The optimum conditions suggested for the maximum removal efficiency of tert-butyl mercaptan were the minimum levels of the initial gasoline concentration (2.5 %w/w), a maximum level of CuSO4 (0.12 %w/w), and an optimum concentration of H2O2, nano-ZVI, and nano-Fe3O4 (8.92 %w/v, 0.1194 %w/w and 0.0898 %w/w, respectively) in the studied intervals. This condition led to a 99.27% efficiency removal of tert-butyl mercaptan removal in 20 minutes without pH and temperature adjustments.
机译：在这项工作中，研究了在汽油存在下通过双金属Fenton处理（包括Fe2 + / Fe3 + / Fe0 / Cu2 +）从污染土壤中快速修复叔丁基硫醇的方法。中心复合设计（CCD）产生的方差分析和帕累托分析表明，H2O2，CuSO4，Fe3O4纳米颗粒，纳米零价铁（nZVI）和作为初始污染物的汽油初始浓度是影响去除率的因素。叔丁基硫醇（分别为2.09％，13.38％，1.92％，2.01％和39.73％的有效性）。此外，H 2 O 2 / nZVI，H 2 O 2 / nFe 3 O 4，H 2 O 2 / CuSO 4，nZVI / nFe 3 O 4和nZVI / CuSO 4的相互作用对去除效率具有正面影响，而nFe 3 O 4 / CuSO 4则具有负面影响。出人意料的是，在将nZVI和nFe3O4加入反应器之前进行混合不会影响去除效率。对于叔丁基硫醇的最大去除效率建议的最佳条件是初始汽油浓度的最低水平（2.5％w / w），CuSO4的最高水平（0.12％w / w）和H2O2的最佳浓度，纳米ZVI和纳米Fe3O4（分别为8.92％w / v，0.1194％w / w和0.0898％w / w）。此条件导致在20分钟内不调节pH和温度即可有效去除99.27％的叔丁基硫醇。

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