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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 8, 2015, pp. 2649-2664
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Bioline Code: st15249
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 12, No. 8, 2015, pp. 2649-2664
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Adsorption studies of Pb(II) and Cu(II) ions on mesoporous carbon nitride functionalized with melamine-based dendrimer amine
Anbia, M. & Haqshenas, M.
Abstract
Mesoporous carbon nitride functionalized with
melamine-based dendrimer amine has been developed. It
has been characterized using N2 adsorption–desorption
isotherm, thermogravimetric analysis, Fourier transform
spectroscopy and small-angle X-ray scattering techniques.
The pore diameter is centered at 4.74 nm with a relatively
high BET surface area of 102.2 m2/g with a pore volume of
0.12 cm3/g. Thermogravimetric analysis curves show that
the samples (mesoporous carbon nitride and mesoporous
carbon nitride functionalized with melamine-based dendrimer
amine) have high thermal stability compared to the
earlier species. Batch adsorption experiments were conducted
to study the effect of adsorbent dose, temperature,
contact time and solution pH for the removal of Pb(II) from
aqueous systems. The Pb(II) and Cu(II) removal by mesoporous
carbon nitride functionalized with melaminebased
dendrimer amine was found to be 196.34 and
199.75 mg/g, respectively. The sorption data are correlated
better with the Langmuir adsorption isotherm than Freundlich
isotherm. The kinetic analysis has revealed that the
overall adsorption process is successfully fitted in the
pseudo-second-order kinetic model.
Keywords
Adsorption; Isotherms; Mesoporous carbon nitride; Pb(II) and Cu(II); Dendrimer amines
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