|
Comparison between Single and Multi Wall Carbon Nanotubes in Removal of Arsenic from Aqueous Solution
|
Ali Naghizadeh *   , Elham Derakhshani , Allahbakhsh Javid |
| Department of Environmental Health Engineering, School of Public Health, Birjand University of Medical Sciences |
|
|
Abstract: (14113 Views) |
| Background & Objectives:
Presence of arsenic in water sources results in different health problems
including skin problems, cancer, and hypertension. This study was aimed to investigate the
amount of arsenic removal from aqueous solution using carbon nanotubes in a
continuous adsorption column.
Methods: This was
an applicable study and compares pre- and post-conditions. The influence of independent variables
including dosage of carbon nanotubes, contact time, and breakthrough point on
capacity of arsenic adsorption were studied.
Results: Adsorption capacities of single wall and
multiwall carbon nanotubes were about 148 and 95 mg/g, respectively. The experimental
data were analyzed using
Langmuir and Freundlich isotherm models and equilibrium data indicate that Langmuir isotherm model
to fit best for describing arsenic adsorption behavior on carbon nanotubes.
Conclusions: Carbon
nanotubes can be considered as an efficient adsorbent for the removal of
arsenic from large volume of aqueous solutions.
Keywords: Adsorption Comparison Arsenic Carbon Nanotubes |
|
| Keywords: Adsorption Comparison, Arsenic, Carbon Nanotubes |
|
|
Full-Text [PDF 186 kb]
(3421 Downloads)
|
Type of Study: Research |
Subject:
Special
Received: 2014/01/21 | Accepted: 2014/01/21 | Published: 2014/01/21
|
|
|
|
|
|
|
| Send email to the article author |
|
|
|
| Add your comments about this article |
|
|
|
