Open AccessFast and efficient removal of orthophenanthroline and -bipyridine from aqueous solutions by adsorption on modified nanoporous carbon
Author(s) -
Mansoor Anbia,
Mahrouz Alvand
Publication year - 2012
Publication title -
scientia iranica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.299
H-Index - 51
eISSN - 2345-3605
pISSN - 1026-3098
DOI - 10.1016/j.scient.2012.07.004
Subject(s) - adsorption , molecular sieve , aqueous solution , sorbent , mesoporous material , nanoporous , langmuir adsorption model , carbon fibers , chemical engineering , mesoporous silica , chemistry , inorganic chemistry , materials science , catalysis , organic chemistry , composite material , composite number , engineering
Ploycyclic Aromatic Nitrogen Heterocycles (PANHs) are a widespread class of water pollutants that are known to cause serious human health problems; and the demand for effective adsorbents for the removal of toxic compounds is increasing. In this work Ordered Mesoporous Carbon (OMC) was prepared by using SBA-3 silica mesoporous molecular sieves as hard template. Then, Cu(II) modified mesoporous carbon molecular sieves, Cu2+-OMC, was prepared through wet impregnation of OMC by CuSO4⋅5H2O. Orthophenanthroline (OP) and 2,2′-bipyridine (BP) were used as probe molecules to investigate their adsorption behavior on Cu2+-OMC. The synthesized mesoporous sample is used as a sorbent for fast and highly efficient removal of OP and BP from contaminated waters. The isotherms of OP and BP on Cu2+-OMC are well simulated by a Langmuir adsorption model. Theoretical studies show that the adsorption kinetics of OP and BP on Cu2+-OMC can be well depicted by using a pseudo-second-order kinetic model