In
this study, the porous carbon was prepared through templated synthesis method
using the natural zeolite as template and sugar as carbon source. The porous
carbon was obtained at a carbonization temperature of 700oC with a
weight ratio 1:1 for zeolite and sugar. The physical, structural and surface
properties of the porous carbon were characterized with the scanning electron
microscope (SEM), transmission electron microscope (TEM), X-ray diffraction
(XRD), elemental analysis and nitrogen (N2) adsorption. The specific
surface area and total pore volume of carbon were found as 412 m2/g
and 0.5515 cm3/g, respectively. This carbon material was used for
removal of Pb2+ ions from solution. The effects of initial pH, temperature
and contact time on adsorption were studied. The maximum Pb2+
removal was observed at pH=5. The adsorption was reached to the equilibrium in
120 minutes. Various kinetic models were used for describing the adsorption
kinetic and the pseudo-second order kinetic model showed well fit. Langmuir,
Freundlich and Temkin isotherm models were applied to the experimental
equilibrium data and Langmuir equation was found as best fitting isotherm.
Primary Language | English |
---|---|
Subjects | Engineering |
Journal Section | Articles |
Authors | |
Publication Date | December 4, 2018 |
Published in Issue | Year 2018Issue: 4 |