Preparation of N-doped biochar from sewage sludge and melamine for peroxymonosulfate activation: N-functionality and catalytic mechanisms

doi:10.1016/j.scitotenv.2020.140862

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（2010~）

	Preparation of N-doped biochar from sewage sludge and melamine for peroxymonosulfate activation: N-functionality and catalytic mechanisms
	Mian, Md Manik 1,2; Liu, Guijian 1,2; Zhou, Huihui 1,2
通讯作者	Liu, Guijian(lgj@ustc.edu.cn)
	2020-11-20
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	744 页码:10
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.
关键词	Sludge-melamine-blended biochar Peroxymonosulfate Pyridinic N Reluctant dyes Non-radical and radical processes
DOI	10.1016/j.scitotenv.2020.140862
关键词[WOS]	ORGANIC POLLUTANTS ; PEROXYDISULFATE ACTIVATION ; CARBON NANOTUBES ; POROUS CARBON ; ACTIVE-SITES ; DEGRADATION ; NITROGEN ; OXIDATION ; GRAPHENE ; PERFORMANCE
收录类别	SCI ; 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	Environmental Sciences & Ecology
项目资助者	National Natural Science Foundation of China ; Key Program for Science and Technology Development of Anhui Province
WOS类目	Environmental Sciences
WOS记录号	WOS:000573554400003
出版者	ELSEVIER
引用统计	被引频次：75[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15364
专题	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.