Efficient recovery of aromatic compounds from the wastewater of styrene monomer and propylene oxide co-production plant via hypercrosslinked aryl-rich starch-β-cyclodextrin polymeric sorbent  

作　　者：Zhongwei Tan Xingguo Xu Yu Wan Chengjun Kang Zhaoqiang Zhang Zhenxia Zhao Fang Shen Kungang Chai Hongbing Ji 

机构地区：[1]School of Chemistry and Chemical Engineering,Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology,Guangxi University,Nanning 530004,China [2]Department of Chemical and Biomolecular Engineering,National University of Singapore,4 Engineering Drive 4,Singapore 117585,Singapore [3]Fine Chemical Industry Research Institute,School of Chemistry,Sun Yat-sen University,Guangzhou 510275,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第9期150-160,共11页中国化学工程学报（英文版）

基　　金：supported by National Natural Science Foundation of China(21868002 and 21961160741);the Natural Science Foundation of Guangxi Province(2018GXNSFAA281206,2020GXNSFGA297001,2020GXNSFAA297044);Dean Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology(2021Z010);Specific research project of Guangxi for research bases and talents(AD18126005);special funding for‘Guangxi Bagui Scholars’,Guangxi scholarship fund for the middle-aged backbone teachers。

摘　　要：Adsorptive recovery of valuable components from industrial wastewater is highly desirable for avoiding resource wastage but remains a challenge.Herein,we develop an efficient continuous adsorption process for recovering aromatic compounds in wastewater from styrene monomer and propylene oxide coproduction(SMPO)plant.Based on our insight into the potential of bio-based porous materials for adsorption application,starch-graft-polystyrene(SPS)and aryl-modifiedβ-cyclodextrin(ACD)were prepared,and novel hypercrosslinked porous polymers combined SPS with ACD(HSPS-ACDs)were synthesized through external crosslinking approach.In a binary-component system,the best-performing one HSPS-ACD(H)with high ACD content and large specific surface area possessed superior capacities for the representative aromatic compounds,acetophenone(AP,2.81 mmol·g^(-1))and 1-phenylethanol(1-PE,1.35 mmol·g^(-1))compared with the previously reported materials.Further,the adsorption properties of aromatic compounds on HSPS-ACD(H)were investigated in batch mode.For practical application,continuous adsorption experiments were conducted in a HSPS-ACD(H)-packed fixed bed,where the target aromatic components in wastewater were effectively retained and further released by elution.Besides showing the reversible adsorption and efficient enrichment effect,the HSPS-ACD(H)-packed fixed bed also maintained great stability in multiple cycles.Moreover,quantum chemical calculations were performed to elucidate the potential mechanism of adsorption of AP and 1-PE onto HSPS-ACD(H).

关 键 词：Adsorption Wastewater treatment AROMATICS Hypercrosslinked polymer Β-CYCLODEXTRIN STARCH 

分 类 号：X783[环境科学与工程—环境工程] TQ424[化学工程]