Preparation and Application of a Xanthate-Modified Thiourea Chitosan Sponge for the Removal of Pb(II) from Aqueous Solutions

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	Preparation and Application of a Xanthate-Modified Thiourea Chitosan Sponge for the Removal of Pb(II) from Aqueous Solutions
	N. N. Wang, X. J. Xu, H. Y. Li, J. L. Zhai, L. Z. Yuan, K. X. Zhang and H. W. Yu
刊名	Industrial & Engineering Chemistry Research
	2016
卷号	55 期号:17 页码:4960-4968
通讯作者	于洪文
中文摘要	As chitosan has low uptake for Pb(II) and high solubility in monoprotic acids, a simple procedure using nontoxic chitosan as a precursor at room temperature was developed to prepare a xanthate-modified thiourea chitosan sponge (XTCS) by lyophilization for enhancing Pb(II) removal in water. The sponge structure of XTCS improved both stability and separation performance. Adsorption results showed that pH markedly affected the adsorption performance of XTCS. The adsorption process attained equilibrium in 45 min with a maximum adsorption capacity of 188.04 mg g(-1) at room temperature. The pseudo second -order kinetic equation and Langmuir isotherm model were suitable to describe the adsorption behavior of XTCS. The physicochemical characteristics of XTCS were investigated by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Results indicated that Pb(II) removal mechanism of XTCS was mainly dependent on complexations of sulfur and nitrogen atoms and ion exchange.
内容类型	期刊论文
源URL	[http://159.226.123.10/handle/131322/7069]
专题	东北地理与农业生态研究所_湿地生态系统管理学科组_期刊论文
推荐引用方式 GB/T 7714	N. N. Wang, X. J. Xu, H. Y. Li, J. L. Zhai, L. Z. Yuan, K. X. Zhang and H. W. Yu. Preparation and Application of a Xanthate-Modified Thiourea Chitosan Sponge for the Removal of Pb(II) from Aqueous Solutions[J]. Industrial & Engineering Chemistry Research,2016,55(17):4960-4968.
APA	N. N. Wang, X. J. Xu, H. Y. Li, J. L. Zhai, L. Z. Yuan, K. X. Zhang and H. W. Yu.(2016).Preparation and Application of a Xanthate-Modified Thiourea Chitosan Sponge for the Removal of Pb(II) from Aqueous Solutions.Industrial & Engineering Chemistry Research,55(17),4960-4968.
MLA	N. N. Wang, X. J. Xu, H. Y. Li, J. L. Zhai, L. Z. Yuan, K. X. Zhang and H. W. Yu."Preparation and Application of a Xanthate-Modified Thiourea Chitosan Sponge for the Removal of Pb(II) from Aqueous Solutions".Industrial & Engineering Chemistry Research 55.17(2016):4960-4968.