The trapping of B from water by exfoliated and functionalized vermiculite

被引：12

作者：

Kehal, Mohamed ^{[1
,2
]}

Reinert, Laurencr ^{[1
]}

Maurin, David ^{[3
]}

Bantignies, Jean-Louis ^{[3
]}

Ohashi, Fumihiko ^{[4
]}

Mennour, Ammar ^{[2
]}

Duclaux, Laurent ^{[1
]}

机构：

[1] Univ Savoie, Polytech Savoie, Lab Chim Mol & Environm, F-73376 Le Bourget Du Lac, France

[2] Univ Mentouri, Dept Chim, Lab Pollut & Traitement Eaux, Constantine 25000, Algeria

[3] Univ Montpellier 2, Lab Colloides Verres & Nanomat, UMR CNRS 5587, F-34095 Montpellier, France

[4] Natl Inst Adv Ind Sci & Technol, Mat Res Inst Sustainable Dev, Nagoya, Aichi 4638560, Japan

来源：

CLAYS AND CLAY MINERALS | 2008年 / 56卷 / 04期

关键词：

adsorption; grafting; N-methyl-D-glucamine;

D O I：

10.1346/CCMN.2008.0560406

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Micron-grade natural vermiculite was modified by several physical and chemical treatments in order to increase the adsorption capacity of this material for B. A thermal exfoliation (T = 600 degrees C) of pristine material, a chemical exfoliation through reaction with hydrogen peroxide (H2O2 35%), or grafting of a specific B complexant (i.e. N-methyl-D-glucamine: NMDG) led to an increase in the uptake of B at low initial concentrations of the aqueous solutions ([B] approximate to 5 mg L-1). The more efficient material is the NMDG-grafted clay, for which the adsorption uptake is four times greater than that of raw vermiculite, and reaches 0.04 mmol g(-1). For all modified materials, the effect of the pH on B adsorption and the adsorption kinetics were studied and compared to raw vermiculite. Adsorption isotherms were also plotted and fitted well with the Freundlich equation.

引用

页码：453 / 460

页数：8

共 46 条

[1] Effect of the properties of the water sorbent on the heat generation in the Fe-C-NaCl-H2O-O2 system [J].

Babievskaya, I. Z. ;

Gavrichev, K. S. ;

Drobot, N. F. ;

Noskova, O. A. ;

Ovchinnikova, N. A. ;

Shubina, A. E. ;

Krenev, V. A. .

INORGANIC MATERIALS, 2007, 43 (03) :292-295

[2] Wettability contrasts in kaolinite and illite clays: Characterization by infrared and X-ray absorption spectroscopies [J].

Bantignies, JL ;

Moulin, CCD ;

Dexpert, H .

CLAYS AND CLAY MINERALS, 1997, 45 (02) :184-193

[3]

BAYENS B, 1997, J CONTAM HYDROL, V27, P199

[4] An empirical model for kinetics of boron removal from boron-containing wastewaters by ion exchange in a batch reactor [J].

Boncukcuoglu, R ;

Yilmaz, AE ;

Kocakerim, MM ;

Çopur, M .

DESALINATION, 2004, 160 (02) :159-166

[5]

CHOI WW, 1979, ENVIRON SCI TECHNOL, V13, P189, DOI 10.1021/es60150a012

[6]

Colthup N. B., 1990, INTRO INFRARED RAMAN

[7] Immobilized N-methyl-D-glucamine as an arsenate-selective resin [J].

Dambies, L ;

Salinaro, R ;

Alexandratos, SD .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2004, 38 (22) :6139-6146

[8] Microporous 18 Å Al-pilared vermiculites:: preparation and characterization [J].

del Rey-Perez-Caballero, FJ ;

Poncelet, G .

MICROPOROUS AND MESOPOROUS MATERIALS, 2000, 37 (03) :313-327

[9]

FARMER V, 1974, MONOGRAPH MINERALOGI, V4

[10]

Ferreira OP, 2006, CHEMOSPHERE, V62, P80, DOI 10.1016/j.chemosphere.2005.04.009

← 1 2 3 4 5 →