Removal of Chromium (III) from Water by Using Modified and Nonmodified Carbon Nanotubes

Journal of Nanomaterials. 2010;2010 DOI 10.1155/2010/232378

 

Journal Homepage

Journal Title: Journal of Nanomaterials

ISSN: 1687-4110 (Print); 1687-4129 (Online)

Publisher: Hindawi Publishing Corporation

LCC Subject Category: Technology: Technology (General)

Country of publisher: Egypt

Language of fulltext: English

Full-text formats available: PDF, HTML, ePUB

 

AUTHORS

Muataz Ali Atieh (Chemical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia)
Omer Yahya Bakather (Chemical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia)
Bassam S. Tawabini (Earth Sciences Department, King Fahd University of Petroleum & Minerals, KFUPM P.O. Box 952, Dhahran 31261, Saudi Arabia)
Alaadin A. Bukhari (Center for Environment & Water, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia)
Mazen Khaled (Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia)
Mamdouh Alharthi (Chemical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia)
Mohammed Fettouhi (Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia)
Faraj Ahmad Abuilaiwi (Center of Research Excellence in Nanotechnology (CENT), King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia)

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 16 weeks

 

Abstract | Full Text

This study was carried out to evaluate the environmental application of modified and nonmodified carbon nanotubes through the experiment removal of chromium trivalent (III) from water. The aim was to find the optimal condition of the chromium (III) removal from water under different treatment conditions of pH, adsorbent dosage, contact time and agitation speed. Multi wall carbon nanotubes (MW-CNTs) were characterized by field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). The diameter of the carbon nanotubes produced varied from 20–40 nm with average diameter of 24 nm and 10 micrometer in length. Adsorption isotherms were used to model the adsorption behavior and to calculate the adsorption capacity of the absorbents. The results showed that, 18% of chromium (III) removal was achieved using modified carbon nanotubes (M-CNTs) at pH 7, 150 rpm, and 2 hours for a dosage of 150 mg of CNTs. The removal of Cr (III) is mainly attributed to the affinity of chromium (III) to the physical and chemical properties of the CNTs. The adsorption isotherms plots were well fitted with experimental data.