KMS of Research Center for Eco-Environmental Sciences， CAS
| Suppression of performance of activated carbon filter due to residual aluminum accumulation | |
Huang, Xin ; Geng, Mengze; Wang, Kaiyun; He, Yitian; Li, Guiwei; Feng, Chenghong; Shi, Baoyou
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| 2023 | |
| Source Publication | JOURNAL OF HAZARDOUS MATERIALS
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| ISSN | 0304-3894 |
| Volume | 445Pages:130637-1-9 |
| Abstract | Extending the lifetime of granular activated carbon (GAC) filters with no significant loss in their effectiveness is a considerable challenge for drinking water supply utilities. However, the effects of residual Al from coagulants on GAC performance are rarely considered. Herein, in-service GAC samples obtained from full-scale water treatment plants were investigated to evaluate the amount of accumulated Al. Although the Al concentration in water was two to three times lower than the Ca concentration, Al exhibited considerable accumulation (second to Ca accumulation) in in-service GAC samples (0.68-8.63 mg g(-1)). Surface characterization results indicated that Al accumulation could have been caused by the co-precipitation of Al with Ca and Si to form Ca4Al2Si3O10 center dot H2O and Ca4Al6O12SO4, self-precipitation or complexion with OH/COOH on the GAC or biofilm surfaces. Correlation analysis of the accumulated Al and GAC properties implied that Al accumulation considerably reduced the surface area of GAC by similar to 30%. Lab simulation experiments indicated that the removal of dissolved organic matter was reduced by 6-10% when additional Al was loaded. In addition, results showed that the residual Al (up to 200 mu g L-1) considerably affected the extracellular polymeric substance component and microorganism |
| Department | 中国科学院饮用水科学与技术重点实验室 |
| Keyword | Activated carbon Residual aluminum Adsorption Biological activity Coagulation |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/48578 |
| Collection | 中国科学院饮用水科学与技术重点实验室 |
| Affiliation | 1.Chinese Academy of Sciences 2.Research Center for Eco-Environmental Sciences (RCEES) 3.Beijing Normal University 4.University of Chinese Academy of Sciences, CAS |
| Recommended Citation GB/T 7714 | Huang, Xin,Geng, Mengze,Wang, Kaiyun,et al. Suppression of performance of activated carbon filter due to residual aluminum accumulation[J]. JOURNAL OF HAZARDOUS MATERIALS,2023,445:130637-1-9. |
| APA | Huang, Xin.,Geng, Mengze.,Wang, Kaiyun.,He, Yitian.,Li, Guiwei.,...&Shi, Baoyou.(2023).Suppression of performance of activated carbon filter due to residual aluminum accumulation.JOURNAL OF HAZARDOUS MATERIALS,445,130637-1-9. |
| MLA | Huang, Xin,et al."Suppression of performance of activated carbon filter due to residual aluminum accumulation".JOURNAL OF HAZARDOUS MATERIALS 445(2023):130637-1-9. |
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| Suppression of perfo（1478KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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