Synthesis and characterization of alumina-coated carbon nanotubes and their application for lead removal

被引：880

作者：

Gupta, Vinod K. ^{[1
,2
]}

Agarwal, Shilpi ^{[3
]}

Saleh, Tawfik A. ^{[2
]}

机构：

[1] Indian Inst Technol Roorkee, Dept Chem, Roorkee 247667, Uttar Pradesh, India

[2] King Fahd Univ Petr & Minerals, Dept Chem, Dhahran 31261, Saudi Arabia

[3] Jiwaji Univ, Dept Chem, Gwalior, MP, India

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 185卷 / 01期

关键词：

Coated carbon nanotubes; Adsorption; Removal; Lead; LOW-COST ADSORBENTS; AQUEOUS-SOLUTIONS; ADSORPTION; WATER; COLUMN; KINETICS; BEHAVIOR; CD(II); NICKEL; ASH;

D O I：

10.1016/j.jhazmat.2010.08.053

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Alumina-coated multi-wall carbon nanotubes were synthesized and characterized by scanning electron microscopy. X-ray diffraction, and FTIR. They were used as an adsorbent for the removal of lead ions from aqueous solutions in two modes, batch and fixed bed. In I he batch mode, experiments were carried out to investigate the effect of contact time, agitation speed, adsorbent dosage and solution pH on the removal of lead. The coated nanotubes exhibit better removal ability over uncoated. For fixed-bed columns, thickness of the layer and flow rate were investigated. increasing the thickness and decreasing the flow rate enhanced the removal of lead. The prepared adsorbent displayed the main advantage of separation convenience when a fixed-bed column was used compared to the batch adsorption treatment. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：17 / 23

页数：7

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