Photo-assisted degradation of bisphenol A by a novel FeS2@SiO2 microspheres activated persulphate process: Synergistic effect, pathway and mechanism
Diao, ZH; Wei-Qian; Guo, PR; Kong, LJ; Pu, SY; zenghuid86@scsio.ac.cn
2018
发表期刊CHEMICAL ENGINEERING JOURNAL
卷号349页码:683-693
摘要In this study, FeS2@SiO2 microspheres were firstly employed as a heterogeneous catalyst to activate persulfate (PS) for the degradation of bisphenol A (BPA) from aqueous solutions. The most relevant findings revealed that UV irradiation induced a significant improvement in the degradation of BPA by the FeS2@SiO2 microspheres/PS system. Nearly 100% of BPA degradation by the FeS2@SiO2 microspheres/PS/UV system was achieved within 120 min at reaction conditions of 1 mM PS, 0.066 mM BPA, 1.0 g/L FeS2@SiO2 microspheres and pH 3.0. A high performance on the degradation of BPA might be attributable to a synergistic effect between the PS/UV and the FeS2@SiO2 microspheres/PS catalytic processes. It was found that the BPA degradation could be inhibited by the coexisting anions like Cl-, HCO3- and PO43- to different extents at much higher concentrations, whereas NO3 had a negligible effect. Organic acids such as ethylene diamine tetra-acetic acid (EDTA) and oxalic acid (OA) would lead to an enhancement with a lower dosage, whereas a significantly negative effect was observed at much higher dosages. Radical scavenging tests revealed that the SO4 center dot- radicals prevailed over HO center dot. A total of seven intermediates during the degradation of BPA were identified by GC/MS, and a possible reaction pathway and mechanism of BPA degradation by the FeS2@SiO2 microspheres/PS/UV system was proposed. This study demonstrated a simple water treatment method involving the use of low cost natural iron minerals for organic pollutants removal.
部门归属[Diao, Zeng-Hui; Wei-Qian] Zhongkai Univ Agr & Engn, Sch Environm Sci & Engn, Guangzhou 510225, Guangdong, Peoples R China; [Diao, Zeng-Hui] Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Guo, Peng-Ran] Guangdong Inst Anal, Guangdong Engn Technol Res Ctr On Line Monitoring, Guangzhou 510070, Guangdong, Peoples R China; [Kong, Ling-Jun] Guangzhou Univ, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China; [Pu, Sheng-Yan] Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Sichuan, Peoples R China
学科领域Engineering
关键词[WOS]Bisphenol A ; FeS2 ; Fenton ; Persulphate ; SiO2 microspheres
资助项目LMB
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16913
专题中科院海洋生物资源可持续利用重点实验室
通讯作者zenghuid86@scsio.ac.cn
推荐引用方式
GB/T 7714
Diao, ZH,Wei-Qian,Guo, PR,et al. Photo-assisted degradation of bisphenol A by a novel FeS2@SiO2 microspheres activated persulphate process: Synergistic effect, pathway and mechanism[J]. CHEMICAL ENGINEERING JOURNAL,2018,349:683-693.
APA Diao, ZH,Wei-Qian,Guo, PR,Kong, LJ,Pu, SY,&zenghuid86@scsio.ac.cn.(2018).Photo-assisted degradation of bisphenol A by a novel FeS2@SiO2 microspheres activated persulphate process: Synergistic effect, pathway and mechanism.CHEMICAL ENGINEERING JOURNAL,349,683-693.
MLA Diao, ZH,et al."Photo-assisted degradation of bisphenol A by a novel FeS2@SiO2 microspheres activated persulphate process: Synergistic effect, pathway and mechanism".CHEMICAL ENGINEERING JOURNAL 349(2018):683-693.
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