文献类型：期刊文献

英文题名：Removal of heavy metals from aqueous solution using carbon-based adsorbents: A review

作者：Duan, Chengyu[1];Ma, Tianyu[1];Wang, Jianyu[1];Zhou, Yanbo[1,2]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2020

卷号：37

外文期刊名：JOURNAL OF WATER PROCESS ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000575572100013)】；

基金：This work was financially supported by the National Natural Science Foundation of China (51778230) and National key research and development program (2017YFB06026).

语种：英文

外文关键词：Heavy metal; Adsorption; Carbon-Based materials; Desorption

摘要：Heavy metal contamination has been a serious threat to environment and human health. Carbon-based materials, from biochar/activated carbon to modified materials (i.e. carbon nanotubes-based materials, and graphene-based materials), have been widely studied as efficient adsorbents for the heavy metal removal from aqueous solutions. This review discussed the recent achievements in adsorption isotherms, adsorption kinetics and adsorption mechanism according to the existing forms of heavy metals in water. The effect of process conditions, such as temperature, pH value, and coexisting ions, on adsorption performance are combed, and the universal guidance law is obtained. The physical adsorption, electrostatic interaction, ion exchange, surface complexation, and precipitation/coprecipitation play important roles in heavy metals adsorption process. In addition to the common activated carbon(AC), biochar(BC) and the emerging carbon nanotubes(CNTs) and graphene(GN) adsorbent show good development potentials. Meanwhile, though the modified carbonaceous materials can achieve high adsorption capacity and removal efficiency of heavy metals, the modification operation is complex, especially chemical modification. Acid and alkali solution are often used to regenerate spent materials in desorption, however, further studies of other desorption reagent are really needed. This review highlights the removal of heavy metal ions from aqueous solution using carbon-based materials as adsorbents, and discusses the existing deficiencies and suggestions on further study.