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

作     者：Rui Shan Yueyue Shi Jing Gu YazhuoWang Haoran Yuan Rui Shan;Yueyue Shi;Jing Gu;Yazhuo Wang;Haoran Yuan

作者机构：Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)Guangzhou 511458China CAS Key Laboratory of Renewable EnergyGuangzhou 510640China Guangdong Provincial Key Laboratory of New and Renewable Energy Research and DevelopmentGuangzhou 510640China Nano Science and Technology InstituteUniversity of Science and Technology of ChinaSuzhou 215123China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2020年第28卷第5期

页      面：1375-1383页

核心收录：

学科分类：082803[工学-农业生物环境与能源工程] 081702[工学-化学工艺] 08[工学] 0828[工学-农业工程] 0817[工学-化学工程与技术] 09[农学] 0903[农学-农业资源与环境] 

基　　金：financially supported by State’s Key Project of Research and Development Plan,China(y804091001) National Natural Science Foundation of China(51776211) Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)(GML2019ZD0101) 

主　　题：Pyrolysis Biochar Heavy metal removal Competitive adsorption 

摘      要：Converting peanut shells into biochar by pyrolysis was considered an environmentally friendly and efficient method for agricultural solid waste *** properties of peanut shell-derived biochar(PBC)under different temperature and its adsorption capacity of heavy metals were *** 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 ***,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 *** adsorption process using selected biochar was optimized with respect to p H,reaction time,adsorbent dose,and initial concentration of heavy *** 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 ***,peanut shells derived biochar could be a potential and green adsorbent for wastewater treatment.