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Magnetic hydroxypropyl chitosan functionalized graphene oxide as adsorbent for the removal of lead ions from aqueous solution
- Source :
- Desalination and Water Treatment. 57:3975-3984
- Publication Year :
- 2014
- Publisher :
- Informa UK Limited, 2014.
-
Abstract
- Magnetic hydroxypropyl chitosan/graphene oxide (MHCGO) composites have been synthesized and employed as adsorbent for removal of lead ions from aqueous solution. X-ray powder diffraction, Fourier transform infrared spectrum, and scanning electron microscope showed that the MHCGO composites were fabricated successfully. The effects of adsorbent dosage, pH, and contact time on the adsorption of lead ions have been discussed, and the optimal adsorption conditions have been acquired. The results indicated that the adsorption of lead ions on MHCGO was dependent on pH with the optimum pH nearly 5.5. The adsorption process was fairly quick and the time to reach adsorption equilibrium is 100 min. The adsorption kinetics could be described by the pseudo-second-order model very well. Adsorption data fitted well with Freundlich model. The effect of temperature on lead ions adsorption was studied and was shown to be spontaneous.
- Subjects :
- Aqueous solution
Materials science
Graphene
Scanning electron microscope
Inorganic chemistry
Kinetics
Oxide
Ocean Engineering
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Pollution
0104 chemical sciences
law.invention
Chitosan
chemistry.chemical_compound
Adsorption
chemistry
law
0210 nano-technology
Powder diffraction
Water Science and Technology
Subjects
Details
- ISSN :
- 19443986 and 19443994
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- Desalination and Water Treatment
- Accession number :
- edsair.doi...........97d3e7933e6cc084205b1ff44e240964