Preparation of layered double hydroxide intercalated by Gallic acid for boron adsorption

doi:10.1016/j.jwpe.2021.102394

	Preparation of layered double hydroxide intercalated by Gallic acid for boron adsorption
	Cai, Liang; Zhang, Yuze; Peng, Xiaowu; Guo, Fan; Ji, Lianmin; Li, Lijuan
第一作者	Cai, Liang
	2021-12
发表期刊	JOURNAL OF WATER PROCESS ENGINEERING
ISSN	2214-7144
卷号	44
摘要	Recently, water pollution has become very serious especially with trace amounts of boron in solution. In this work, Layered double hydroxide intercalated by Gallic acid (GA-LDH), a prospective candidate material for borate acid adsorption, was synthesized for the first time by direct precipitation method using Gallic acid (GA), magnesium nitrate, and aluminum nitrate as raw materials. The effects of pH, reaction time, initial concentration of boric acid, coexisting ions and other factors on the adsorption capacity of GA-LDH for B were analyzed. The GA-LDH adsorption capacity of 10 mg.g(-1) was reached via the optimized synthesis conditions. And most importantly, compared to conventional NO3-LDH, the adsorption of GA-LDH on B is less disturbed by other ions. The study on the adsorption mechanism revealed that GA-LDH adsorbed boron by complex reaction between the hydroxyls of GA and B(OH)(3) or B(OH)(4)(-) in solution. Adsorption kinetics thermodynamics and indicated the relationship between the equilibrium concentration of B in the solution and the B adsorption capacity at various temperatures followed the Langmuir model and the reaction rate of B was mainly controlled by the chemisorption mechanism. The elution efficiency could reach 75% by using nitric acid as an eluent.
DOI	10.1016/j.jwpe.2021.102394
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/34191
专题	盐湖资源综合利用工程技术中心
推荐引用方式 GB/T 7714	Cai, Liang,Zhang, Yuze,Peng, Xiaowu,et al. Preparation of layered double hydroxide intercalated by Gallic acid for boron adsorption[J]. JOURNAL OF WATER PROCESS ENGINEERING,2021,44.
APA	Cai, Liang,Zhang, Yuze,Peng, Xiaowu,Guo, Fan,Ji, Lianmin,&Li, Lijuan.(2021).Preparation of layered double hydroxide intercalated by Gallic acid for boron adsorption.JOURNAL OF WATER PROCESS ENGINEERING,44.
MLA	Cai, Liang,et al."Preparation of layered double hydroxide intercalated by Gallic acid for boron adsorption".JOURNAL OF WATER PROCESS ENGINEERING 44(2021).