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Heteroatoms doped porous carbon derived from hydrothermally treated sewage sludge: Structural characterization and environmental application
Liu, Tingting1,2; Li, Yi3; Peng, Nana1,2; Lang, Qianqian1,2; Xia, Yu1,2; Gai, Chao1,2; Zheng, Qingfu4; Liu, Zhengang1,2
2017-07-15
Source PublicationJOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
Volume197Pages:151-158
Abstract

The heteroatoms (N and S) doped porous carbons (HAPCs) were prepared from sewage sludge by hydrothermal carbonization and chemical activation for the first time. The porous structures and surface properties of HAPCs were characterized by multiple techniques including SEM-EDS, TEM, BET, XRD, Raman spectroscopy and Boehm's titration. The resultant materials were showed to be naturally N and S dual-doped porous carbons (HAPCs), especially for HAPC(Hcl+HF) obtained by HCI-HF-washing, which was typical 3D hierarchically porous structure with abundant mesopores as well as big pore diameter. Then the performance of HAPC(Hcl)+HF on AO7 removal was determined through Response surface methodology. The results showed the adsorption behavior obeyed Langmuir isotherm model and the maximum adsorption capacity was up to 440.53 mg g(-1) at 25 degrees C. Kinetics study revealed that the adsorption followed pseudo second-order kinetic and intra-particle diffusion was the main control step. The high removal rate of AO7 was ascribed to the unique properties of HAPC(Hcl+HF) The great V-mes and big pore diameter facilitated the diffusion of AO7 into the intra surface of particle. Meanwhile, the basic groups and doping of N and S made HAPC(HCl+HF) surface had positive charges, then strong pi-pi stacking interaction and electrostatic attraction contributed to the highly effective adsorption. This study indicated hydrothermal carbonization coupled with chemical activation was a cost-effective approach to prepare efficient heteroatoms doped porous carbon from sewage sludge towards azo dye contaminated wastewater treatment. (C) 2017 Elsevier Ltd. All rights reserved.

KeywordSewage Sludge Hydrothermal Carbonization Porous Carbon Dye Response Surface Methodology Heteroatom-doping
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.jenvman.2017.03.082
Indexed BySCI
Language英语
WOS KeywordActivated Carbon ; Adsorption Properties ; Oxygen Reduction ; High-porosity ; Orange Ii ; Removal ; Dye ; Waste ; Adsorbents ; Nitrogen
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000401880100016
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22629
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
4.Inner Mongolia Univ Nationalities, Anal & Testing Ctr, Tongliao 028000, Peoples R China
Recommended Citation
GB/T 7714
Liu, Tingting,Li, Yi,Peng, Nana,et al. Heteroatoms doped porous carbon derived from hydrothermally treated sewage sludge: Structural characterization and environmental application[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2017,197:151-158.
APA Liu, Tingting.,Li, Yi.,Peng, Nana.,Lang, Qianqian.,Xia, Yu.,...&Liu, Zhengang.(2017).Heteroatoms doped porous carbon derived from hydrothermally treated sewage sludge: Structural characterization and environmental application.JOURNAL OF ENVIRONMENTAL MANAGEMENT,197,151-158.
MLA Liu, Tingting,et al."Heteroatoms doped porous carbon derived from hydrothermally treated sewage sludge: Structural characterization and environmental application".JOURNAL OF ENVIRONMENTAL MANAGEMENT 197(2017):151-158.
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