Dynamic Control of Sacrificial Bond Transformation in the Fe-N-C Single-Atom Catalyst for Molecular Oxygen Reduction
文献类型：期刊论文
| 作者 | Yu, Li; Li, Yuchan; Ruan, Yuefei |
| 刊名 | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
 |
| 出版日期 | 2021-11-22 |
| 卷号 | 630页码:- |
| 关键词 | Blast furnace slag Dredged sludge Dewaterability Electric neutralization |
| ISSN号 | 0927-7757 |
| 英文摘要 | In this work, blast furnace slag was successfully used to prepare five kinds of polymeric titanium aluminium flocculant (PTAC) with different polymerization degrees by two-step acid leaching method, which were applied as the effective dredged sludge conditioners. The results indicated that PTAC can obviously improve the sludge dewaterability. Compared with other four types of PTAC, PTAC0.6 showed the best sludge conditioning efficiency under the optimum dosage of 4 mg Al + Ti/g TSS. It can reduce the capillary suction time of the sediment by 81.4%, the specific resistance to filtration by 65.1%, and the moisture content of the mud cake from 81.9% to 45.81%. PTAC can significantly increase the zeta potential of the dredged sludge, while it has no obvious effect on the floc size D0.5. The electric neutralization substantially contributed to the conditioning of PTAC on dredged sludge dewatering. The concentration of dissolved organic carbon, total phosphorus in the residual water was significantly reduced after PTAC conditioning. PTAC can also remove large molecular weight components in dissolved organic matter by flocculation, or hydrolyze large molecular components into small and medium molecular weight components, furthermore reduce the concentration of these organic components. 3D-EEM analysis results showed that PTAC can effectively remove fulvic acid-like substances and some protein-like substances by flocculation, especially the removal effect of fulvic acid-like substances was more prominent. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/46870]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.City Univ Hong Kong, Dept Chem, Kowloon, Hong Kong, Peoples R China 2.Chinese Acad Sci Beijing, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 3.Guangzhou Univ, Key Lab Water Qual & Conservat Pearl River Delta, Inst Environm Res Greater Bay, Minist Educ, Guangzhou 510006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Li,Li, Yuchan,Ruan, Yuefei. Dynamic Control of Sacrificial Bond Transformation in the Fe-N-C Single-Atom Catalyst for Molecular Oxygen Reduction[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2021,630:-. |
| APA | Yu, Li,Li, Yuchan,&Ruan, Yuefei.(2021).Dynamic Control of Sacrificial Bond Transformation in the Fe-N-C Single-Atom Catalyst for Molecular Oxygen Reduction.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,630,-. |
| MLA | Yu, Li,et al."Dynamic Control of Sacrificial Bond Transformation in the Fe-N-C Single-Atom Catalyst for Molecular Oxygen Reduction".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 630(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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