title: Adsorptive removal of patulin from aqueous solution using thiourea modified chitosan resin.
abstract: In the present paper, thiourea modified chitosan resin (TMCR) was firstly prepared through converting hydroxyl groups of chitosan resin into thiol groups, using glutaraldehyde as cross-linking agent and thiourea as modification agent. TMCR was characterized by FTIR, EDXS, SEM, XRD and AFM technologies. Batch adsorption experiments were performed to study the adsorption capacity of TMCR for patulin at different pH, temperature, contact time and patulin concentration. The result showed that TMCR was effective in removal of patulin from aqueous solution. The adsorption capacity of TMCR for patulin was 1.0 mg/g at pH 4.0, 25 °C for 24 h. Adsorption process could be well described by pseudo-first order model, Freundlich isotherm model and intraparticle diffusion model. It indicated that TMCR is expected to be a new material for patulin adsorption from aqueous solutions.
authors.affiliation: College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China. Electronic address: liubj@ouc.edu.cn.
authors.forename: Bingjie
authors.initials: B
authors.lastname: Liu
authors.affiliation: College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China.
authors.forename: Xiaoning
authors.initials: X
authors.lastname: Peng
authors.affiliation: College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.affiliation: College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.affiliation: College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China.
authors.forename: Xianghong
authors.initials: X
authors.lastname: Meng
authors.affiliation: College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China.
authors.forename: Dongfeng
authors.initials: D
authors.lastname: Wang
authors.affiliation: School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China.
authors.forename: Guangli
authors.initials: G
authors.lastname: Yu
mesh_terms: D000327:Adsorption; D048271:Chitosan / Q000737:chemistry*; D010365:Patulin / Q000737:chemistry*; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D013890:Thiourea / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D012996:Solutions; D048271:Chitosan; D010365:Patulin; D013890:Thiourea
keywords: Adsorption; Chitosan resin; Isotherm; Kinetics; Patulin; Thiourea