A facile synthesis of core-shell/bead-like poly (vinyl alcohol)/alginate@PAM with good adsorption capacity, high adaptability and stability towards Cu() removal

doi:10.1016/j.cej.2018.06.129

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	A facile synthesis of core-shell/bead-like poly (vinyl alcohol)/alginate@PAM with good adsorption capacity, high adaptability and stability towards Cu() removal
	Zhang, Wei 1; Deng, Qian 1; He, Qiulai 1; Song, Jianyang 1; Zhang, Shilu 1; Wang, Hongyu 1; Zhou, Jinping 2; Zhang, Huining 3
刊名	Chemical Engineering Journal
	2018-11-01
卷号	351 页码:462-472
关键词	Adsorption Alginate Blending Chemical stability Crosslinking Fits and tolerances Heavy metals Natural polymers Polyacrylates Polyvinyl alcohols Reusability Scanning electron microscopy X ray photoelectron spectroscopy Adsorption capacities Cooper Energy dispersive X-ray spectrometry Fourier transform infrared Freundlich isotherm model Heavy metal adsorption Pseudo-second order model Thermodynamic studies
ISSN号	13858947
DOI	10.1016/j.cej.2018.06.129
英文摘要	A facile route of poly (vinyl alcohol)/alginate@ polyacrylamide (PVA/SA@PAM) for heavy metal adsorption was prepared by crosslinking with PAM onto PVA/SA, which complemented both benefits of natural and synthetic polymers, resulting from the design of core–shell/bead-like structure and polymer blending. Fourier transform infrared (FT-IR), scanning electron microscopy and energy-dispersive X-ray spectrometry (SEM-EDS) and X-ray photoelectron spectroscopy (XPS) etc. were applied to characterize as-synthesized beads. The results showed the optimal pH value was 5.0. The adsorption process of Cu() fitted well with the Freundlich isotherm model and the pseudo-second-order model in batch system. The experimental maximum adsorption capacity was 79.5 ± 1.6 mg/g under the optimal condition, which is approximately 2.3 and 2 times higher than that of plain SA beads and PVA/SA beads, respectively. Thermodynamic studies revealed the adsorption process was spontaneous and endothermic in nature. Thomas model was fitted better than Bohart-Adams model with breakthrough curves under different initial Cu() concentration in a column system. More importantly, the PVA/SA@PAM showed excellent mechanical stability and resistance for interference of co-existing ions. Besides, its removal ability only decreased slightly even after eleven cycles in reusability tests. Overall, PVA/SA@PAM exhibits attractive characteristics of simple production process, low cost, good adsorption capacity, excellent adaptability and chemical and mechanical stability. © 2018 Elsevier B.V.
WOS研究方向	Engineering
语种	英语
出版者	Elsevier B.V., Netherlands
WOS记录号	WOS:000444000000048
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150566]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Wuhan University, Wuhan; 430072, China; 2.College of Chemistry and Molecular Science, Wuhan University, Wuhan; 430072, China; 3.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhang, Wei,Deng, Qian,He, Qiulai,et al. A facile synthesis of core-shell/bead-like poly (vinyl alcohol)/alginate@PAM with good adsorption capacity, high adaptability and stability towards Cu() removal[J]. Chemical Engineering Journal,2018,351:462-472.
APA	Zhang, Wei.,Deng, Qian.,He, Qiulai.,Song, Jianyang.,Zhang, Shilu.,...&Zhang, Huining.(2018).A facile synthesis of core-shell/bead-like poly (vinyl alcohol)/alginate@PAM with good adsorption capacity, high adaptability and stability towards Cu() removal.Chemical Engineering Journal,351,462-472.
MLA	Zhang, Wei,et al."A facile synthesis of core-shell/bead-like poly (vinyl alcohol)/alginate@PAM with good adsorption capacity, high adaptability and stability towards Cu() removal".Chemical Engineering Journal 351(2018):462-472.