Selective removal for Pb2+ in aqueous environment by using novel   macroreticular PVA beads

doi:10.1016/j.jhazmat.2010.05.097

CORC > 北京大学 > 环境科学与工程学院

	Selective removal for Pb2+ in aqueous environment by using novel macroreticular PVA beads
	Zhang, Yun ; Li, Yanfeng ; Li, Xiaoli ; Yang, Liuqing ; Bai, Xue ; Ye, Zhengfang ; Zhou, Lincheng ; Wang, Liyuan
刊名	journal of hazardous materials
	2010
关键词	Pb(II) Selective adsorption MR-PVA beads Batch study HEAVY-METALS KAOLINITE CLAY KINETIC-MODEL ADSORPTION EQUILIBRIUM BIOSORPTION IONS LEAD SORPTION CADMIUM
DOI	10.1016/j.jhazmat.2010.05.097
英文摘要	Batch sorption experiments were conducted using macroreticular poly(vinyl alcohol) (MR-PVA) beads as a adsorbent to adsorb Pb(II) from both single component system and multi-metal solution in which experimental parameters were studied including solution pH, contact time, adsorbent dose, initial concentration of metal ions and ionic strength. The equilibrium isotherms were determined at pH 6 under constant ionic strength and at different temperatures. The results showed that the maximum adsorption capacity of Pb(II) (213.98 mg g(-1)) with 1 g L-1 of adsorbent was observed at 300 mg L-1 at an initial pH value of 6.0 under temperature of 288 K. Removals of about 60% occurred in 30 min, and equilibrium was attained at around 150 min. The equilibrium data for the adsorption of Pb(II) on MR-PVA beads was tested with various adsorption isotherm models among which three models were found to be suitable for the Pb(II) adsorption. In addition, the kinetic adsorption fitted well to the pseudo-second-order model and the corresponding rate constants were obtained. Thermodynamic aspects of the adsorption process were also investigated. (C) 2010 Elsevier B.V. All rights reserved.; Engineering, Environmental; Engineering, Civil; Environmental Sciences; SCI(E); EI; 12; ARTICLE; 1-3; 898-907; 181
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/243070]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Zhang, Yun,Li, Yanfeng,Li, Xiaoli,et al. Selective removal for Pb2+ in aqueous environment by using novel macroreticular PVA beads[J]. journal of hazardous materials,2010.
APA	Zhang, Yun.,Li, Yanfeng.,Li, Xiaoli.,Yang, Liuqing.,Bai, Xue.,...&Wang, Liyuan.(2010).Selective removal for Pb2+ in aqueous environment by using novel macroreticular PVA beads.journal of hazardous materials.
MLA	Zhang, Yun,et al."Selective removal for Pb2+ in aqueous environment by using novel macroreticular PVA beads".journal of hazardous materials (2010).