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Abstract
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Exposure to heavy metals, even at trace level, is believed to be a risk for human beings.
Nowadays, numerous methods have been proposed for efficient removal of heavy metal
from waters. Adsorption is one of the most important techniques for heavy metal removal
from water samples (1).
In this study, multi-walled carbon nanotube was doped in soluble eggshell membrane protein
(SEP/MWCNT) matrix to removal arsenic ions from aqueous solution (2). To assess the
absorption mechanism and gain parameters involved in the absorption process, anodic stripping
voltammetry (ASV) technique was used. ASV method consisted of two steps, including
preconcentration of the analyte at the electrode surface by reduction, and stripping the
preconcentrated analyte at the electrode surface by oxidation. Maximum Arsenic sorption was
observed to be in acidic media (pH 1.7). According to the experimental results, Freundlich
isotherm is considered for the absorption of Arsenic on the SEP/MWCNT nonocomposite.
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