ORIGINAL RESEARCH
A Sorption Study of Bisphenol A in Aqueous
Solutions on Pristine and Oxidized Multi-Walled
Carbon Nanotubes
More details
Hide details
1
National Research and Development Institute for Chemistry and Petrochemistry (ICECHIM), Bucharest, Romania
2
University POLITEHNICA of Bucharest, Romania
Submission date: 2017-07-12
Final revision date: 2017-10-08
Acceptance date: 2017-10-16
Online publication date: 2018-04-27
Publication date: 2018-05-30
Corresponding author
Alina Catrinel Ion
University Politehnica of Bucharest, Polizu street no. 1-7, 0172311 Bucharest, Romania
Pol. J. Environ. Stud. 2018;27(5):2245-2257
KEYWORDS
TOPICS
ABSTRACT
Environmental protection draws great attention worldwide due to the release of various harmful
pollutants that represent risks or threats to animals and humans. Among these pollutants, endocrinedisrupting
chemicals (EDCs) as environmental contaminants interfere with the normal hormonal functions
in wildlife and humans. This study proposes multi-walled carbon nanotubes – (MWCNTs) pristine and
oxidized, and weathered for one year in environmental conditions – as sorbents for bisphenol A (BPA)
from aqueous solution. Kinetic and isotherm models are examined. Better sorption capacities are shown
for the functionalized MWCNTs-COOH because of the two types of predominating interactions that take
place: electrostatic and π-π interactions. The Langmuir isotherm model fit better than the Freundlich one,
showing that the adsorption of BPA on MWCNTs is a monolayer adsorption on homogeneous surfaces.