Production and detailed characterization of bean husk-based carbon:: Efficient cadmium (II) removal from aqueous solutions

被引：19

作者：

Chavez-Guerrero, Leonardo ^{[1
]}

Rangel-Mendez, Rene ^{[2
]}

Munoz-Sandoval, Emilio ^{[1
]}

Cullen, David A. ^{[3
,4
]}

Smith, David J. ^{[3
,4
]}

Terrones, Humberto ^{[1
]}

Terrones, Mauricio ^{[1
]}

机构：

[1] IPICYT, Adv Mat Dept, Col Lomas Secc 4A, San Luis Potosi 78216, Mexico

[2] IPICYT, Dept Environm Sci, Col Lomas Secc 4A, San Luis Potosi 78216, Mexico

[3] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA

[4] Arizona State Univ, Sch Mat, Tempe, AZ 85287 USA

来源：

WATER RESEARCH | 2008年 / 42卷 / 13期

关键词：

bean husk; cadmium; nanostructure; glassy carbon; amorphous carbon;

D O I：

10.1016/j.watres.2008.04.022

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We report the production of a modified carbon by heat treating bean husk (Phaseolus vulgaris) at 270 degrees C in Ar, followed by chemical activation using HNO3. The material was studied using thermogravimetric analysis (TGA), infrared spectroscopy (IRS), high-resolution transmission electron microscopy (HRTEM), elemental mapping, energy dispersive X-ray spectroscopy (EDX), X-ray powder diffraction and scanning electron microscopy (SEM). Cd2+ sorption studies with this material were carried out at different concentrations. It was found that cadmium (II) is effectively removed by the modified material obtained from bean husk (180mg/g). The sorption mechanism is discussed in terms of the activated surface properties. A relationship between the oxygen content and sorption was found in this novel material. Commercial activated carbon (AC) (F400) was used for comparison. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3473 / 3479

页数：7

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