Activation of peroxymonosulfate by chemically modified sludge biochar for the removal of organic pollutants: Understanding the role of active sites and mechanism | |
Mian, Md Manik1,2; Liu, Guijian1,2 | |
2020-07-15 | |
发表期刊 | CHEMICAL ENGINEERING JOURNAL |
ISSN | 1385-8947 |
卷号 | 392页码:10 |
摘要 | Peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs) are promising tools for wastewater treatment. However, the production of high-efficient PMS activator from low-cost material still needs further improvement for practical application. Herein, we reported a series of sludge-derived biochar as catalysts for PMS activation and subsequent degradation of organic pollutants such as acid orange 7, rhodamine B, methylene blue, methyl orange, and their combination. Chemical treatment (e.g., NH4OH, KOH, or HCl treatment before, after, or both before and after pyrolysis) and various pyrolytic conditions were employed for synthesizing sludge biochar based-catalysts. Our best as-synthesized catalyst exhibited excellent performance in oxidative degradation of recalcitrant organics in PMS/acidic media, which was superior to many previously reported carbocatalysts. A non-radical process performed by pyridinic N was the dominant catalytic mechanism, while pyrrolic N, activated C(+) and surface area supported the adsorption of pollutants. A significant correlation between reaction rate constant and dye adsorption suggested that the non-radical oxidation process influenced by both pollutant adsorption and PMS activation. This study not only provides a facile rote of efficient sludge valorization, but also gives new scientific insight into the specific role of N species and other functional groups of carbocatalysts in PMS-based AOPs. |
关键词 | Sludge biochar-based catalyst Peroxymonosulfate Pyridinic N and pyrrolic N Organic pollutants Non-radical process |
DOI | 10.1016/j.cej.2019.123681 |
关键词[WOS] | SEWAGE-SLUDGE ; CARBON NANOTUBES ; DOPED GRAPHENE ; METAL NANOPARTICLES ; CATALYTIC-OXIDATION ; ENERGY-STORAGE ; NITROGEN ; DEGRADATION ; PERFORMANCE ; BIOMASS |
收录类别 | SCI |
语种 | 英语 |
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 | Engineering |
项目资助者 | National Natural Science Foundation of China ; Key Program for Science and Technology Development of Anhui Province |
WOS类目 | Engineering, Environmental ; Engineering, Chemical |
WOS记录号 | WOS:000525862500047 |
出版者 | ELSEVIER SCIENCE SA |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/12591 |
专题 | 生态环境研究室 |
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. Activation of peroxymonosulfate by chemically modified sludge biochar for the removal of organic pollutants: Understanding the role of active sites and mechanism[J]. CHEMICAL ENGINEERING JOURNAL,2020,392:10. |
APA | Mian, Md Manik,&Liu, Guijian.(2020).Activation of peroxymonosulfate by chemically modified sludge biochar for the removal of organic pollutants: Understanding the role of active sites and mechanism.CHEMICAL ENGINEERING JOURNAL,392,10. |
MLA | Mian, Md Manik,et al."Activation of peroxymonosulfate by chemically modified sludge biochar for the removal of organic pollutants: Understanding the role of active sites and mechanism".CHEMICAL ENGINEERING JOURNAL 392(2020):10. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Mian, Md Manik]的文章 |
[Liu, Guijian]的文章 |
百度学术 |
百度学术中相似的文章 |
[Mian, Md Manik]的文章 |
[Liu, Guijian]的文章 |
必应学术 |
必应学术中相似的文章 |
[Mian, Md Manik]的文章 |
[Liu, Guijian]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论