Comparing adsorption of arsenic and antimony from single-solute and bi-solute aqueous systems onto ZIF-8

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Comparing adsorption of arsenic and antimony from single-solute and bi-solute aqueous systems onto ZIF-8
	Liu, Ruiping; Zhang, Xiwang; Liu, Bao; Jian, Meipeng; Wang, Huan; Zhang, Gaosheng; Qu, Jiuhui
刊名	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
	2018-02-05
卷号	538 页码:164-172
关键词	Arsenic Antimony Zeolitic imidazolate framework-8 Competitive adsorption
ISSN号	0927-7757
文献子类	Article
英文摘要	The coexistence of toxic arsenic (As) and antimony (Sb) due to anthropic activities in environments has arose great challenge for their simultaneous removal. In this study, the zeolitic imidazolate framework-8 (ZIF-8) with ultrahigh porosity were first proposed for the removal of arsenite [As(III)], arsenate [As(V)], and antimonite [Sb (V)]. The maximum adsorption capacity (Q(max)) in single-solute system is determined to be 2.02, 1.42, and 0.86 mmol/g for As(III), As(V), and Sb(V) at pH=8.6, respectively. In bi-solute systems, As(V) exhibits a stronger inhibition on Sb(V) adsorption than As(III) does although Q(As(III),max) is higher than Q(As(V),max). Additionally, after the adsorption of As(III) and As(V), their substitution by Sb(V) occurs only at pH of below 8.8. However, this undesired effect became insignificant at elevated pH and higher initial concentrations of arsenic. When As and Sb are introduced in sequence, the pre-adsorbed species forms stable complexes with ZIF-8 and inhibits the subsequent adsorption of the other one. FTIR and XPS analyses indicate that the zinc hydroxyl group on ZIF-8 dominates in their adsorption. This study advances the understanding of the competitive adsorption between As and Sb and the strategy for their simultaneous removal. Therefore, ZIF-8 could serve as a promising adsorbent for the simultaneous removal of As and Sb.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41331]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Liu, Ruiping,Zhang, Xiwang,Liu, Bao,et al. Comparing adsorption of arsenic and antimony from single-solute and bi-solute aqueous systems onto ZIF-8[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2018,538:164-172.
APA	Liu, Ruiping.,Zhang, Xiwang.,Liu, Bao.,Jian, Meipeng.,Wang, Huan.,...&Qu, Jiuhui.(2018).Comparing adsorption of arsenic and antimony from single-solute and bi-solute aqueous systems onto ZIF-8.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,538,164-172.
MLA	Liu, Ruiping,et al."Comparing adsorption of arsenic and antimony from single-solute and bi-solute aqueous systems onto ZIF-8".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 538(2018):164-172.