Effective Organochlorine Pesticides Removal from Aqueous Systems by Magnetic Nanospheres Coated with Polystyrene

• Published in: Journal of Wuhan University of Technology. Materials science edition Vol. 29; no. 1; pp. 168 - 173
• Main Authors: Lan, Jing, Cheng, Yang, Zhao, Zongshan
• Format: Journal Article
• Language: English
• Published: Heidelberg Wuhan University of Technology 01.02.2014; Springer Nature B.V
• Subjects: Adsorption; Aqueous solutions; Biomaterials; Chemistry and Materials Science; Fe3O4; Langmuir模型; Magnetization; Materials Science; Mathematical models; Nanospheres; Pesticides; Polystyrene resins; Salinity; 包覆; 吸附平衡时间; 有机氯农药; 水系统; 磁性纳米微球; 聚苯乙烯微球; magnetic nanospheres; adsorption; organochlorine; polystyrene
• ISSN: 1000-2413; 1993-0437
• DOI: 10.1007/s11595-014-0887-6

In this paper, magnetic nanospheres coated with polystyrene （Fe3O4@PS） were prepared for the removal of organochlorine pesticides from aqueous solutions. The obtained Fe3O4@PS was round shape with diameter of 55±11 nm. The VSM results illustrated that its higher saturated magnetization was 36.76 emu g^-1 and it could be easily separated from aqueous solutions with a permanent magnet. The adsorption results showed that pesticides could be effectively adsorbed and the adsorption equilibrium time was less than 20 mins. The pseudo-second-order model was suitable to describe the adsorption kinetics. Compared with the Freundlich adsorption model, the adsorption data fitted well with Langmuir model. The effect of salinity and humic acid was also studied and the results illustrated that they could be neglected under optimized conditions. The asobtained sorbent showed a good performance with more than 93.3% pesticides removal in treating actual water samples.