Synthesis, characterization and application of glucamine-modified mesoporous silica type SBA-15 for the removal of boron from natural water

被引：15

作者：

Ben Amor, Taissire ^{[1
]}

Dhaouadi, Imen ^{[1
]}

Lebeau, Benedicte ^{[2
]}

Tlili, Mohamed ^{[1
]}

Ben Amor, Mohamed ^{[1
]}

机构：

[1] Ctr Rech Technol Eaux CERTE, Lab Traitement Eaux Nat, Soliman 8020, Tunisia

[2] Univ Haute Alsace, UMR CNRS 7361, IS2M, Equipe Mat Porosite Controlee MPC, F-68093 Mulhouse, France

来源：

DESALINATION | 2014年 / 351卷

关键词：

Ordered mesoporous silica; SBA-15; Glucamine grafting; Boron removal; AQUEOUS-SOLUTIONS; REVERSE-OSMOSIS; ADSORPTION; SEAWATER; BEHAVIOR; SURFACE; PORES; SEA;

D O I：

10.1016/j.desal.2014.07.028

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The present survey highlights for the first time that glucamine-modified ordered mesoporous silica (OMS) type SBA-15 can be used as adsorbents for the uptake of boron from water. By means of X-ray diffraction, N-2 adsorption-desorption, thermogravimetry and Fourier transform infrared, the structure and physicochemical properties of the materials were characterized. The behavior of the calcined and glucamine modified SBA-15 in adsorption of boron from synthetic solutions and seawater was investigated. Physico-chemical parameters such as adsorbent dose, equilibrium contact time, pH and initial boron concentration were studied in a series of batch adsorption experiments. Boron adsorption on the adsorbent was saturated within 3 h in solution containing 10 mg L-1 of boron, with 5 g L-1 of adsorbent dose. The studies showed that boron were quantitatively removed from water at neutral pH. The glucamine modified SBA-15 possessed higher boron removal capacity, about 45%, than the unmodified SBA-15 which showed only a 23% of boron removal. Thanks to the increase of the adsorption sites due to the grafting. Desorption tests were carried out using 1 M HCl. OMS type SBA-15 was also successfully applied for the removal of boron from seawater in the presence of high concentration of foreigner ions. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：82 / 87

页数：6

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