Effect of pH on effluent organic matter removal in hybrid process of magnetic ion-exchange resin adsorption and ozonation | |
Chen, Zhiqiang1,2; Tang, Yingcai2; Wen, Qinxue2; Yang, Boxuan2; Pan, Yang3 | |
刊名 | Chemosphere |
2020-02-01 | |
卷号 | 241 |
关键词 | Adsorption Biogeochemistry Efficiency Effluents Fluorescence Ion exchange resins Ions Magnetism Organic carbon Ozone Ozone water treatment Ozonization pH pH effects Wastewater reclamation Dissolved organic carbon Effluent organic matter External perturbations Magnetic ion exchange resins Magnetic ion exchanges (MIEX) Response surface methodology Synchronous fluorescence Twodimensional correlation analysis |
ISSN号 | 00456535 |
DOI | 10.1016/j.chemosphere.2019.125090 |
英文摘要 | It is essential to mitigate the risk of exposure to effluent organic matter (EfOM) in aquatic environments to ensure safe wastewater recycling. Magnetic ion-exchange (MIEX) resin adsorption combined with ozonation could provide EfOM removal. However, the poor understanding of the influences of the parameters and mechanisms in the hybrid process has restricted the applications. In this study, the response surface methodology was used to reveal the interactions of the major operation parameters. The degradation behaviour of the EfOM was investigated by using spectroscopy combined with mathematical methods. The effect of the pH on the EfOM removal was also analysed. The maximum efficiency of the removal of dissolved organic carbon (DOC) was 59.77% at the optimal MIEX resin dosage of 7.97 mL/L, ozone concentration of 8 mg/L, agitation speed of 199.84 r/min, and pH of 9.98. The ozonation was superior to resin adsorption in the removal of 1054-Da compounds, while the resin adsorption was advantageous in the removal of 4168-Da compounds. Three fluorescent components (C1, C2, and C3) were more easily subjected to external perturbation than the DOC and ultraviolet absorbance at 254 nm in the oxidation processes. The MIEX resin exhibited low efficiencies of removal of the fluorescent substances. A synchronous fluorescence analysis coupled with a two-dimensional correlation analysis revealed that the variation in EfOM followed the order of fulvic-to humic-like substances in the hybrid process of MIEX and the following ozonation. The pH was the most significant influencing factor in the hybrid process. © 2019 |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | Elsevier Ltd |
WOS记录号 | WOS:000509791600126 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/115702] |
专题 | 兰州理工大学 土木工程学院 |
作者单位 | 1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730070, China; 2.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin; 150090, China; 3.National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou; 215000, China |
推荐引用方式 GB/T 7714 | Chen, Zhiqiang,Tang, Yingcai,Wen, Qinxue,et al. Effect of pH on effluent organic matter removal in hybrid process of magnetic ion-exchange resin adsorption and ozonation[J]. Chemosphere,2020,241. |
APA | Chen, Zhiqiang,Tang, Yingcai,Wen, Qinxue,Yang, Boxuan,&Pan, Yang.(2020).Effect of pH on effluent organic matter removal in hybrid process of magnetic ion-exchange resin adsorption and ozonation.Chemosphere,241. |
MLA | Chen, Zhiqiang,et al."Effect of pH on effluent organic matter removal in hybrid process of magnetic ion-exchange resin adsorption and ozonation".Chemosphere 241(2020). |
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