Preparation of N-doped biochar from sewage sludge and melamine for peroxymonosulfate activation: N-functionality and catalytic mechanisms
文献类型：期刊论文
| 作者 | Mian, Md Manik1,2; Liu, Guijian1,2; Zhou, Huihui1,2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-11-20 |
| 卷号 | 744页码:10 |
| 关键词 | Sludge-melamine-blended biochar Peroxymonosulfate Pyridinic N Reluctant dyes Non-radical and radical processes |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.140862 |
| 通讯作者 | Liu, Guijian(lgj@ustc.edu.cn) |
| 英文摘要 | In this study, a group of nitrogen-doped sludge biochar were prepared by a single-step pyrolysis method and employed as catalysts for the activation of peroxymonosulfate (PMS). The N content of as-synthesized biochar composites was altered by adding a different ratio of melamine with the precursors. The sample characterization results indicated that the N content of sludge-melamine-blended biochar named SM-(0.5:1) significantly increased from 1.91 to 9.93% compared with that of raw sludge biochar. Consequently, the surface area and mesoporosity also enhanced. SM-(0.5:1) exhibited excellent degradation ability of reluctant organic pollutants in PMS/acidic media, which outperformed many previously reported carbocatalysts. Complete color removal of a mixture solution of seven cationic and anionic dyes (10 mg L-1 of each) was achieved within 50 min by using 200 mg L-1 of SM-(05:1) and 350 mg L-1 of PMS. A mechanism study indicated that the non-radical process performed by the pyridine N dominated the oxidative degradation of pollutants rather than that of SO4 center dot(-) and center dot OH radical process governed by graphitic N, C=O, and surface metal oxides. This study concurrently provides a facile route of enhancing N functionality of sludge-based carbocatalysts and an efficient way of sludge valorization. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | ORGANIC POLLUTANTS ; PEROXYDISULFATE ACTIVATION ; CARBON NANOTUBES ; POROUS CARBON ; ACTIVE-SITES ; DEGRADATION ; NITROGEN ; OXIDATION ; GRAPHENE ; PERFORMANCE |
| 资助项目 | National Natural Science Foundation of China[41173032] ; Key Program for Science and Technology Development of Anhui Province[1804b06020358] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000573554400003 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Key Program for Science and Technology Development of Anhui Province |
| 源URL | [http://ir.ieecas.cn/handle/361006/15363]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 通讯作者 | Liu, Guijian |
| 作者单位 | 1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mian, Md Manik,Liu, Guijian,Zhou, Huihui. Preparation of N-doped biochar from sewage sludge and melamine for peroxymonosulfate activation: N-functionality and catalytic mechanisms[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,744:10. |
| APA | Mian, Md Manik,Liu, Guijian,&Zhou, Huihui.(2020).Preparation of N-doped biochar from sewage sludge and melamine for peroxymonosulfate activation: N-functionality and catalytic mechanisms.SCIENCE OF THE TOTAL ENVIRONMENT,744,10. |
| MLA | Mian, Md Manik,et al."Preparation of N-doped biochar from sewage sludge and melamine for peroxymonosulfate activation: N-functionality and catalytic mechanisms".SCIENCE OF THE TOTAL ENVIRONMENT 744(2020):10. |
入库方式： OAI收割
来源：地球环境研究所
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