Desorption and Reusable Properties of a New Boron-Selective Hybrid Gel Adsorbent

Abstract:

A hybrid gel adsorbent bearing boron-selective functional groups was prepared by the reaction of bis(trimethoxysilylpropyl)amine (TSPA) and a gel precursor in water. The gel precursor was synthesized from (3-glycidoxypropyl)trimethoxysilane (GPTMS) and N-methylglucamine (MG). The boron adsorption behavior of the gel and a commercial boron-selective resin D564 was investigated. The gel adsorbent has a suitable mechanical strength and an adsorption capacity of 2.00 mmol g^-1, which is higher than that of the resin D564 (1.64 mmol g­^-1). Boron can be desorbed from both the gel and the resin D564 with a 0.25 mol L^-1 HCl solution. The good reusability of both the gel and the resin D564 was confirmed by fourteen consecutive adsorption-desorption-regeneration cycles.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 2692-2695
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.2692
• Online since: May 2011
• Authors: Xiu Shen Ye, Xiao Lei Gao, Hai Ning Liu, Zhi Jian Wu
• Keywords: Adsorption, Boron, Desorption, Hybrid Gel

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