Knowledge Management System Of Institute of process engineering,CAS
| Effective removal of dissolved silica from white carbon black wastewater by iron electrode electrocoagulation: Process optimization and simulation | |
| Liu, Minghui1,2; Ma, Shuang1,3; Wang, Xi1; Wang, Mingmei1; Zhao, Yutong1,5; Yan, Zhanpeng1,2,4; Wang, Erqiang1; Zhang, Hui1,2; Xue, Tianyan1,2 | |
| 2022-06-01 | |
| Source Publication | JOURNAL OF WATER PROCESS ENGINEERING
 |
| ISSN | 2214-7144 |
| Volume | 47Pages:9 |
| Abstract | The chemical coagulation method treats White Carbon Black (WCB) wastewater with high cost and low silica removal rate. Meanwhile, aluminum electrode is mostly used in the treatment of SiO2-containing wastewater by electrocoagulation (EC), however, the price of aluminum is high despite the effective removal. This work is dedicated to the application of cheap iron electrode to achieve effective removal of dissolved silica from WCB wastewater with low energy consumption. Through system optimization design, the current density (i), plate spacing (l), plate-to-water ratio (n) and electrode passivation (a) were synergistically regulated to improve the SiO2 removal rate of iron. In addition, the electricity, concentration, velocity and temperature field distributions of the silica removal system were investigated by a multiphysical field coupled simulation model. An optimal silica removal rate of 97.4% was obtained with the theoretical iron consumption of 0.251 g Fe/L, adsorption capacity of 660 mg SiO2/(g Fe L) and electricity consumption of 0.312 Wh/L. The simulations found that EC facilitates mass and heat transfer in the cell, while the anode with square holes is more favorable to enhance the iron corrosion rate. Eventually, a new, efficient and simple approach was proposed compared to chemical coagulation for silica removal from WCB wastewater. |
| Keyword | White carbon black Dissolved silica Electrocoagulation Orthogonal design optimization Numerical simulation |
| DOI | 10.1016/j.jwpe.2022.102812 |
| Language | 英语 |
| WOS Keyword | BRACKISH-WATER ; PRETREATMENT ; WASTEWATERS ; PERFORMANCE ; COMPOSITE |
| Funding Project | National Natural Science Foun-dation of China[21978304] |
| WOS Research Area | Engineering ; Water Resources |
| WOS Subject | Engineering, Environmental ; Engineering, Chemical ; Water Resources |
| Funding Organization | National Natural Science Foun-dation of China |
| WOS ID | WOS:000797850000001 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/53633 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Wang, Erqiang; Zhang, Hui |
| Affiliation | 1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr Green Recycling Trateg Met Resou, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Coal Chem, Taiyuan 030001, Peoples R China 4.Zhengzhou Univ, Coll Chem Engn, Zhengzhou 450001, Peoples R China 5.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Lab, Key Lab Fuel Cells & Hybrid Power Sources, Dalian 116023, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Minghui,Ma, Shuang,Wang, Xi,et al. Effective removal of dissolved silica from white carbon black wastewater by iron electrode electrocoagulation: Process optimization and simulation[J]. JOURNAL OF WATER PROCESS ENGINEERING,2022,47:9. |
| APA | Liu, Minghui.,Ma, Shuang.,Wang, Xi.,Wang, Mingmei.,Zhao, Yutong.,...&Xue, Tianyan.(2022).Effective removal of dissolved silica from white carbon black wastewater by iron electrode electrocoagulation: Process optimization and simulation.JOURNAL OF WATER PROCESS ENGINEERING,47,9. |
| MLA | Liu, Minghui,et al."Effective removal of dissolved silica from white carbon black wastewater by iron electrode electrocoagulation: Process optimization and simulation".JOURNAL OF WATER PROCESS ENGINEERING 47(2022):9. |
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