Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems

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	Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems
	Rui Shan 1; Yueyue Shi 1; Jing Gu 1; YazhuoWang 1; Haoran Yuan1
	2020
Source Publication	中国化学工程学报:英文版
ISSN	1004-9541
Volume	28.0 Issue:005 Pages:1375
Abstract	Converting peanut shells into biochar by pyrolysis was considered an environmentally friendly and efficient method for agricultural solid waste disposal.The properties of peanut shell-derived biochar(PBC)under different temperature and its adsorption capacity of heavy metals were investigated.It was found that PBC400 exhibited the highest cumulative capability for heavy metals elimination in single solute because of its high specific surface area and rich functional groups.Furthermore,the competitive adsorption revealed that PBC had a substantial difference in adsorption affinity from diverse heavy metal ions,sorption capacity decreased as Pb2+>Cu2+>Cd2+>Ni2+>Zn2+,which was lower than in a single solute.The adsorption process using selected biochar was optimized with respect to p H,reaction time,adsorbent dose,and initial concentration of heavy metals.The kinetic data was well fitted with PSO model,and the Langmuir model was adopted for adsorption equilibrium data in both cases of single solutes and mixed solutes for all heavy metals,which indicated that the removal course was primarily explained by monolayer adsorption,and chemical adsorption occupied an important role.Therefore,peanut shells derived biochar could be a potential and green adsorbent for wastewater treatment.
Keyword	Pyrolysis Biochar Heavy metal removal Competitive adsorption
Language	英语
Document Type	期刊论文
Identifier	http://ir.giec.ac.cn/handle/344007/27558
Collection	中国科学院广州能源研究所
Affiliation	1.中国科学院广州能源研究所 2.Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou 3.CAS Key Laboratory of Renewable Energy 4.Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development 5.Nano Science and Technology Institute,University of Science and Technology of China
First Author Affilication	GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation GB/T 7714	Rui Shan,Yueyue Shi,Jing Gu,et al. Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems[J]. 中国化学工程学报:英文版,2020,28.0(005):1375.
APA	Rui Shan,Yueyue Shi,Jing Gu,YazhuoWang,&Haoran Yuan.(2020).Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems.中国化学工程学报:英文版,28.0(005),1375.
MLA	Rui Shan,et al."Single and competitive adsorption affinity of heavy metals toward peanut shell-derived biochar and its mechanisms in aqueous systems".中国化学工程学报:英文版 28.0.005(2020):1375.

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