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

GIEC OpenIR

	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
发表期刊	中国化学工程学报:英文版
ISSN	1004-9541
卷号	28.0 期号:005 页码:1375
摘要	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.
关键词	Pyrolysis Biochar Heavy metal removal Competitive adsorption
语种	英语
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/27558
专题	中国科学院广州能源研究所
作者单位	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
第一作者单位	中国科学院广州能源研究所
推荐引用方式 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.