title: Application of molecularly imprinted polymers to selective removal of clofibric acid from water.
abstract: A new molecularly imprinted polymer (MIP) adsorbent for clofibric acid (CA) was prepared by a non-covalent protocol. Characterization of the obtained MIP was achieved by scanning electron microscopy (SEM) and nitrogen sorption. Sorption experimental results showed that the MIP had excellent binding affinity for CA and the adsorption of CA by MIP was well described by pseudo-second-order model. Scatchard plot analysis revealed that two classes of binding sites were formed in the MIP with dissociation constants of 7.52 ± 0.46 mg L(-1) and 114 ± 4.2 mg L(-1), respectively. The selectivity of MIP demonstrated higher affinity for CA over competitive compound than that of non-imprinted polymers (NIP). The MIP synthesized was used to remove CA from spiked surface water and exhibited significant binding affinity towards CA in the presence of total dissolved solids (TDS). In addition, MIP reusability was demonstrated for at least 12 repeated cycles without significant loss in performance.
authors.affiliation: College of Civil Engineering, Tongji University, Shanghai, China ; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, China.
authors.forename: Chaomeng
authors.initials: C
authors.lastname: Dai
authors.forename: Juan
authors.initials: J
authors.lastname: Zhang
authors.forename: Yalei
authors.initials: Y
authors.lastname: Zhang
authors.forename: Xuefei
authors.initials: X
authors.lastname: Zhou
authors.forename: Shuguang
authors.initials: S
authors.lastname: Liu
mesh_terms: D000327:Adsorption; D002995:Clofibric Acid / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D011108:Polymers / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D011108:Polymers; D014867:Water; D002995:Clofibric Acid