Preparation of biochar adsorbent from straw and its adsorption capability

doi:10.3969/j.issn.1002-6819.2011.z2.021

IR > 石油化工学院

	Preparation of biochar adsorbent from straw and its adsorption capability
	Zhang, Jiyi1 ; Pu, Lijun 1; Li, Gen 2
	2011-12-01
发表期刊	Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
ISSN	10026819
卷号	27 期号:SUPPL.2 页码:104-109
摘要	In order to find a new way of using discarded biomass materials, the wheat straw was used to prepare biochar adsorbent by means of carbonization at low and middle temperatures. Then, the Cu2+ was taken as adsorbed substance to investigate the biochar adsorbent adsorption capability for heavy metal from the wastewater. The results showed that the biochar adsorbent prepared at low and middle temperatures (200-500°C) obtained higher productivity with less energy consumption, easier process, higher adsorption speed and short time to reach the adsorption equilibrium. At the same time, it was found that the longest time to reach the adsorption equilibrium was 3 h (P200), and the shortest time was just only 0.5 h (P500). The maximum adsorption capacity of P500 could reach to 11.19 mg/g at 30°C. The adsorption kinetic process was consistent with the Lagergren pseudo-second order kinetic model. The adsorption isotherm agreed well with the Langmuir formulae, and the separation factor (RL) located in the range of 0-1 for favored adsorption. The SEM results indicated that the pore deformation and the straw roughness increased as the carbonization temperature rising, which made the pore canal effect easier and the adsorption properties more excellent. The research can provide a reference for engineering application of biomass adsorbent.
关键词	Adsorption isotherms Carbonization Copper Energy utilization Heavy metals Isotherms Straw Adsorption capability Adsorption equilibria Adsorption properties Biochar adsorbents Carbonization temperatures Engineering applications Preparation Pseudo-second-order kinetic models
DOI	10.3969/j.issn.1002-6819.2011.z2.021
收录类别	EI
语种	中文
出版者	Chinese Society of Agricultural Engineering
EI入藏号	20121314900339
EI主题词	Adsorption
EI分类号	525.3 Energy Utilization - 531 Metallurgy and Metallography - 544.1 Copper - 802.2 Chemical Reactions - 802.3 Chemical Operations - 821.5 Agricultural Wastes
来源库	Compendex
分类代码	525.3 Energy Utilization - 531 Metallurgy and Metallography - 544.1 Copper - 802.2 Chemical Reactions - 802.3 Chemical Operations - 821.5 Agricultural Wastes
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/111313
专题	石油化工学院
作者单位	1.College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 2.Cscec Aecom Consultants Co. Ltd., Lanzhou 730000, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Zhang, Jiyi,Pu, Lijun,Li, Gen. Preparation of biochar adsorbent from straw and its adsorption capability[J]. Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering,2011,27(SUPPL.2):104-109.
APA	Zhang, Jiyi,Pu, Lijun,&Li, Gen.(2011).Preparation of biochar adsorbent from straw and its adsorption capability.Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering,27(SUPPL.2),104-109.
MLA	Zhang, Jiyi,et al."Preparation of biochar adsorbent from straw and its adsorption capability".Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering 27.SUPPL.2(2011):104-109.