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Pretreatment of membrane dye wastewater by CoFe-LDH-activated peroxymonosulfate: Performance, degradation pathway, and mechanism

文献类型：期刊论文

作者Wang, Ziwei1; Tan, Yannan2; Duan, Xiaoguang3; Xie, Yongbing4; Jin, Haibo1; Liu, Xiaowei5; Ma, Lei1; Gu, Qiangyang1; Wei, Huangzhao2
刊名CHEMOSPHERE
出版日期2023-02-01
卷号313页码:11
ISSN号0045-6535
关键词Organic pollutant Advanced oxidation processes Sulfate radical Dye wastewater Alkaline environment Membrane
DOI10.1016/j.chemosphere.2022.137346
英文摘要When a membrane is used to treat dye wastewater, dye molecules are continually concentrated at the membrane surface over time, resulting in a dramatic decrease in membrane flux. Aside from routine membrane cleaning, the pretreatment of dye wastewater to degrade organic pollutants into tiny molecules is a facile solution to the problem. In this study, the use of layered double hydroxide (LDH) to activate peroxymonosulfate (PMS) for efficient degradation of organic pollutant has been thoroughly investigated. We utilized a simple two-drop co-precipitation process to prepare CoFe-LDH. The transition metal components in CoFe-LDH effectively activate PMS to create oxidative free radicals, and the layered structure of LDH increases the number of active sites, and thereby considerably enhancing the reaction rate. It was found that the reaction process produced non-free and free radicals, including singlet oxygen (O-1(2)), sulfate radicals (SO4 center dot-), and hydroxyl radicals (center dot OH), with O-1(2) being the dominant reactive species. Under the optimal conditions (pH 6.7, PMS dosage 0.2 g/L, catalyst loading 0.1 g/ L), the degradation of Acid Red 27 dye in the CoFe-LDH/PMS system reached 96.7% within 15 min at an initial concentration of 200 mg/L. The CoFe-LDH/PMS system also exhibited strong resistance to inorganic ions and pH during the degradation of organic pollutants. This study presents a novel strategy for the synergistic treatment of dye wastewater with free and non-free radicals produced by LDH-activated PMS in a natural environment.
WOS关键词LAYERED DOUBLE HYDROXIDE ; RADICAL-INDUCED DEGRADATION ; OXIDATIVE-DEGRADATION ; DOUBLED HYDROXIDE ; HIGHLY EFFICIENT ; AZO-DYE ; DECOMPOSITION ; CATALYST ; MN ; ADSORPTION
资助项目Beijing Natural Science Foundation[8214056] ; National Natural Science Foundation of China[52100072] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21021101] ; Scientific Research Common Program of Beijing Municipal Commission of Education[KM202010017006] ; Scientific Research Common Program of Beijing Municipal Commission of Education[KM202110017008] ; Youth Innovation Promotion Association CAS[2020190] ; special fund of Beijing Key Laboratory of Clean Fuels and Efficient Catalytic Emission Reduction Technology
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000904124400003
资助机构Beijing Natural Science Foundation ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Scientific Research Common Program of Beijing Municipal Commission of Education ; Youth Innovation Promotion Association CAS ; special fund of Beijing Key Laboratory of Clean Fuels and Efficient Catalytic Emission Reduction Technology
源URL[http://ir.ipe.ac.cn/handle/122111/56565]  
专题中国科学院过程工程研究所
通讯作者Liu, Xiaowei; Ma, Lei; Gu, Qiangyang
作者单位1.Beijing Inst Petrochem Technol, Coll New Mat & Chem Engn, Beijing Key Lab Fuels Cleaning & Adv Catalyt Emiss, Beijing 102617, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Univ Adelaide, Sch Chem Engn & Adv Mat, Adelaide, SA 5005, Australia
4.Chinese Acad Sci, Inst Proc Engn, Beijing Engn Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China
5.King Abdullah Univ Sci & Technol, Adv Membranes & Porous Mat Ctr, Div Phys Sci & Engn, Thuwal 239556900, Saudi Arabia
推荐引用方式
GB/T 7714		 Wang, Ziwei,Tan, Yannan,Duan, Xiaoguang,et al. Pretreatment of membrane dye wastewater by CoFe-LDH-activated peroxymonosulfate: Performance, degradation pathway, and mechanism[J]. CHEMOSPHERE,2023,313:11.
APA Wang, Ziwei.,Tan, Yannan.,Duan, Xiaoguang.,Xie, Yongbing.,Jin, Haibo.,...&Wei, Huangzhao.(2023).Pretreatment of membrane dye wastewater by CoFe-LDH-activated peroxymonosulfate: Performance, degradation pathway, and mechanism.CHEMOSPHERE,313,11.
MLA Wang, Ziwei,et al."Pretreatment of membrane dye wastewater by CoFe-LDH-activated peroxymonosulfate: Performance, degradation pathway, and mechanism".CHEMOSPHERE 313(2023):11.

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