文献类型：期刊文献

英文题名：Adsorption and mechanistic study for phosphate removal by magnetic Fe3O4-doped spent FCC catalysts adsorbent

作者：Yuan, Ling[1];Qiu, Zhaofu[1];Yuan, Lin[1];Tariq, Muhammad[1];Lu, Yunqing[1];Yang, Ji[1];Li, Zhen[1];Lyu, Shuguang[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2019

卷号：219

起止页码：183

外文期刊名：CHEMOSPHERE

收录：;EI(收录号：20190106333224);WOS:【SCI-EXPANDED(收录号:WOS:000457511700021)】；

基金：This study was financially supported by the Fundamental Research Funds for the Central Universities (222201817009) and the National Environmental Protection Public Welfare Science and Technology Research Program of China (No. 201309021).

语种：英文

外文关键词：Waste materials utilization; Spent fluid catalytic cracking catalysts; Magnetic adsorbent; Phosphate removal; Mechanism

摘要：The waste materials utilization has attained increasing attention due to the generation of a large number of spent materials. In the current study, a practical magnetic adsorbent (Fe3O4-doped spent Fluid Catalytic Cracking catalysts, abbreviated as FCCx@(Fe)(y)-O) was prepared, liable to be separated. The batch experiments were employed to investigate the phosphate removal behavior. The findings of this study demonstrated that FCC4@(Fe)(1)-O exhibited the best phosphate removal performance among the adsorbents (FCCx@(Fe)(y)-O), attributed to rough surface layer, i.e., composed of active sites. The various characterizations results revealed that the adsorption behavior of FCC4@(Fe)(1)-O followed the inner-sphere adsorption based on ligand exchanges mechanism. Furthermore, OH- played an important role in the adsorption process. Minor effects were showed on the phosphate removal in the experiments of commonly coexisting anions, except CO32- and SiO32-. The above findings affirmed that FCC4@(Fe)(1)-O was a suitable adsorbent for phosphate removal in the practical application. (C) 2018 Published by Elsevier Ltd.