Journal
RSC ADVANCES
Volume 5, Issue 118, Pages 97435-97445Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra16547d
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [41471259]
- Guangdong Technology Research Centre for Ecological Management and Remediation of Urban Water Systems [2012gczxA005]
- Guangdong Technology Research Centre for Ecological Management and Remediation of Water Systems
Ask authors/readers for more resources
To reduce costs and improve practicability, an ion imprinted magnetic chitosan (IMCS) was synthesized through co-precipitation using steel pickling waste liquor and chitosan and Cu(II) as template ions, which was then characterized by TEM, SEM, EDX, FTIR, XRD and VSM. The batch experiments were carried out for its potential application and high selectivity of Cu(II) removal, which were observed due to the paramagnetic properties and coordination reactions in the imprinted cavities. Kinetic studies revealed that the adsorption process followed a pseudo second-order model and the equilibrium data fit perfectly with the Langmuir isotherm model. The maximum adsorption capacity was 109.89 mg g(-1). Negative values for Delta H-0 and Delta G(0) indicated an exothermic and spontaneous adsorption process. The adsorption process was found to be a chemical reaction and coordination complexes were formed between the metal ions and the groups of chitosan binding mainly in the bridge model. Moreover, 0.2 mol L-1 HCl solution was considered as the most appropriate eluent for regeneration. It showed a great performance in the experiments for practical copper wastewater and the process was considerably cost-effective.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available