文献类型：期刊文献

英文题名：Study on the adsorption performance and competitive mechanism for heavy metal contaminants removal using novel multi-pore activated carbons derived from recyclable long-root Eichhornia crassipes

作者：Cao, Fangjun[1,2,3];Lian, Cheng[4];Yu, Jianguo[1,3];Yang, Hongjun[5];Lin, Sen[1,3,6]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai, Peoples R China;[2]Northwest A&F Univ, Coll Anim Sci & Technol, Xianyang, Shaanxi, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai, Peoples R China;[5]Yunnan Res Inst Ecol Agr, Kunming, Yunnan, Peoples R China;[6]Shanghai Inst Pollut Control & Ecol Secur, Shanghai, Peoples R China

年份：2019

卷号：276

起止页码：211

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20190206361008);WOS:【SCI-EXPANDED(收录号:WOS:000457110000029)】；

基金：This work was sponsored by National Natural Science Foundation of China (51704121).

语种：英文

外文关键词：Long-root Eichhornia crassipes; Activated carbon; Gradient heating; Heavy metal contaminants; Competitive adsorption

摘要：Long-root Eichhornia crassipes has shown great remediation capacity for eutrophication while the dispose of massive plants reaped is a pressing challenge for its large-scale application. In this study the waste plants were reclaimed and employed to prepare multi-pore activated carbons (MPAC) with high specific surface area through a simple gradient heating method. Owing to the large specific surface area and abundant multiple functional groups, the MPAC exhibited great adsorption performances for heavy metals with great adsorption capacities and rapid rate. Careful adsorption investigation indicated that the adsorption was mainly controlled by a charge transfer complex pattern. In addition, the adsorption impetuses were heterozygous involving electrostatic interaction, electron sharing or electronic-donor-acceptor interaction, etc. Moreover, the competitive adsorption reflected adsorption preference existed in the heavy metal removal using the MPAC as adsorbents due to the imparities in the adsorption affinity, thus resulting in the differences of the adsorption tolerance to exogenous influence.