文献类型：期刊文献

英文题名：Persulfate activation via iron sulfide nanoparticles for enhanced trichloroethylene degradation and its applications in groundwater remediation

作者：Habib, Mudassir[1];Ayaz, Tehreem[2];Ali, Meesam[3];Xu, Zhiqiang[1];Zhou, Zhengyuan[1];Ullah, Siraj[4];Lyu, Shuguang[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[3]Muhammad Nawaz Sharif Univ Engn & Technol, Dept Chem Engn, Multan 60000, Pakistan;[4]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：58

外文期刊名：JOURNAL OF WATER PROCESS ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001177819500001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grant No. 41977164) .

语种：英文

外文关键词：FeS nanoparticles; Ferrous ions; Reactive oxygen species; Scavengers; Recycling stability

摘要：Trichloroethylene (TCE) is known for its carcinogenic properties and limited environmental degradation. Therefore, TCE degradation was carried out using a catalyzed system, i.e., an advanced oxidation process (AOP) for an aqueous solution. This study focuses on activating sodium persulfate (PS) by laboratory-synthesized iron sulfide nanoparticles (FeS-NPs) with a particle size of 115.17 nm for enhanced TCE degradation. Field emission scanning electron microscope (FESEM), transmission electron microscopy (TEM), X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), and Brunauer-Emmett-Teller (BET) analyses were employed to investigate physio-chemical properties and surface morphologies of synthesized FeS-NPs catalyst. PS/FeS-NPs exhibited outstanding performance, achieving a remarkable degradation (99.07 %) of TCE in 60 min of reaction time, surpassing the degradation demonstrated by commercially available PS/FeS (25 %). The dominant involvement of Fe transformation and SO4 center dot ˉ, OH center dot, and 1O2 radicals in TCE degradation was validated through scavenging and electron paramagnetic resonance (EPR) investigation. Moreover, the PS/FeS-NPs system was found efficient (97-99 %) in both acidic and basic solutions, although it is noteworthy that highly basic (pH 11) mediums may impact the degradation efficiency (13.8 %). Recycling and stability experiments revealed significant efficiency of the PS/FeS-NPs system during the second run (90.02 %) and third run (68.25 %). These core revelations validate the efficiency of FeS-NPs in TCE degradation in an aqueous solution. Conclusively, the PS/ FeS-NPs system encouraged TCE degradation outcomes, depicting strong potential for prolonged benefits in the remediation of TCE-polluted water.