Heteroatoms doped porous carbon derived from hydrothermally treated sewage sludge: Structural characterization and environmental application

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 固体废弃物处理与资源化实验室

	Heteroatoms doped porous carbon derived from hydrothermally treated sewage sludge: Structural characterization and environmental application
	Xia, Yu; Gai, Chao; Zheng, Qingfu; Liu, Zhengang; Liu, Tingting; Li, Yi; Peng, Nana; Lang, Qianqian
刊名	JOURNAL OF ENVIRONMENTAL MANAGEMENT
	2017-07-15
卷号	197 期号:0 页码:151-158
关键词	Sewage Sludge Hydrothermal Carbonization Porous Carbon Dye Response Surface Methodology Heteroatom-doping
英文摘要	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.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39223]
专题	生态环境研究中心_固体废弃物处理与资源化实验室
推荐引用方式 GB/T 7714	Xia, Yu,Gai, Chao,Zheng, Qingfu,et al. Heteroatoms doped porous carbon derived from hydrothermally treated sewage sludge: Structural characterization and environmental application[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2017,197(0):151-158.
APA	Xia, Yu.,Gai, Chao.,Zheng, Qingfu.,Liu, Zhengang.,Liu, Tingting.,...&Lang, Qianqian.(2017).Heteroatoms doped porous carbon derived from hydrothermally treated sewage sludge: Structural characterization and environmental application.JOURNAL OF ENVIRONMENTAL MANAGEMENT,197(0),151-158.
MLA	Xia, Yu,et al."Heteroatoms doped porous carbon derived from hydrothermally treated sewage sludge: Structural characterization and environmental application".JOURNAL OF ENVIRONMENTAL MANAGEMENT 197.0(2017):151-158.