Comparative Study of Adsorption of Copper Ion onto Locally Developed and Commercial Chitosan

Sunday Anthony Akolo, Abulsalami Sanni Kovo

Department of Chemical Engineering, Federal University of Technology, Minna, Nigeria.

DOI: 10.4236/jeas.2015.51003                

Abstract

Chitosan synthesized locally with a degree of deacetylation 71% and chitosan with a degree of deacetylation 68% from Sigma Aldrich were used to investigate adsorption of Cu²⁺ ion in aqueous solution. The results obtained from equilibrium isotherm adsorption studies of Cu²⁺ ion were an-alyzed in five adsorption models namely: Langmuir, Freundlich, Temkin, Elovich and Dubin- Ra-dushkevich. The isotherms equation was indicated to be well fitted to Langmuir, Freundlich, Temkin and Elovich under the concentration range studied. The kinetic parameters were evaluated utilizing the pseudo-first-order and pseudo-second-order equations, and the adsorption kinetics followed the mechanism of the pseudo-second-order equation for all systems studied, evidencing chemical sorption as the rate-limiting step of adsorption mechanism and not involving a mass transfer in solution. The FTIR studies revealed that the greater sorption of heavy metal was attributed to the large number of primary amine groups available on the surfaces of the chitosan and the abundant carboxyl groups on chitosan.

Keywords

Copper, Chitosan, Adsorption, Deacetylation

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Crini, G. (2008) Application of Chitosan, a Natural Aminopolysaccharide, for Dye Removal from Aqueous Solutions by Adsorption Processes Using Batch Studies: A Review of Recent Literature. Progress in Polymer Science, 33, 399- 447. http://dx.doi.org/10.1016/j.progpolymsci.2007.11.001
[2]	Krajewska, B. (2001) Diffusion of Metal Ions through Gel Chitosan Membranes. Reactive and Functional Polymers, 47, 37-47. http://dx.doi.org/10.1016/S1381-5148(00)00068-7
[3]	Majeti, N.V. and Kumar, R. (2000) A Review of Chitin and Chitosan Applications. Reactive and Functional Polymers, 46, 1-27. http://dx.doi.org/10.1016/S1381-5148(00)00038-9
[4]	Guibal, E. (2004) Interactions of Metal Ions with Chitosan-Based Sorbents: A Review. Separation and Purification Technology, 38, 43-74. http://dx.doi.org/10.1016/j.seppur.2003.10.004
[5]	Varma, J.A., Deshpande, S. and Kennedy, J. (2004) Metal Complexation by Chitosan and Its Derivatives: A Review. Carbohydrate Polymers, 55, 77-93. http://dx.doi.org/10.1016/j.carbpol.2003.08.005
[6]	Wan, M.W., Kan, C.C., Rogel, B.D. and Dalida, M.L.P. (2010) Adsorption of Copper (II) and Lead (II) Ions from Aqueous Solution on Chitosan-Coated Sand. Carbohydrate Polymers, 80, 891-899. http://dx.doi.org/10.1016/j.carbpol.2009.12.048
[7]	Vold, I.M.N., Varum, K.M., Guibal, E. and Smidsrod, O. (2003) Binding of Ions to Chitosans Electivity Studies. Carbohydrate Polymers, 54, 471-477. http://dx.doi.org/10.1016/j.carbpol.2003.07.001
[8]	Igwe, J.C. and Abia, A.A. (2006) A Bioseparation Process for Removing Heavy Metals from Waste Water Using Biosorbents. African Journal of Biotechnology, 5, 167-1179.
[9]	Beppu, M.M., Arruda, E.J., Vieira, R.S. and Santos, N.N. (2004) Adsorption of Cu(II) on Porous Chitosan Membranes Functionalized with Histidine. Journal of Membrane Science, 240, 227-235. http://dx.doi.org/10.1016/j.memsci.2004.04.025
[10]	Zeng, X.F. and Ruckenstein, E. (1996) Supported Chitosan-Dye Affinity Membranes and Their Protein Adsorption. Journal of Membrane Science, 117, 271-278. http://dx.doi.org/10.1016/0376-7388(96)00079-8
[11]	Dalida, M.L.P., Mariano, A.F.V., Futalan, C.M., Kan, C.C., Tsai, W.C. and Wan, M.W. (2011) Adsorptive Removal of Cu(II) from Aqueous Solutions Using Non-Crosslinked and Crosslinked Chitosan-Coated Bentonite Beads. Desalination, 275, 154-159. http://dx.doi.org/10.1016/j.desal.2011.02.051
[12]	McKay, G., Blair, H.S. and Findon, A. (1989) Equilibrium Studies for the Sorption of Metal Ions onto Chitosan. Indian Journal of Chemistry, 28A, 356.
[13]	Sag, Y. and Aktay, Y. (2002) A Comparative Study for the Sorption of Cu(II) Ions by Chitin and Chitosan: Application of Equilibrium and Mass Transfer Models. Separation Science and Technology, 37, 2801-2822. http://dx.doi.org/10.1081/SS-120005467
[14]	Malek, A. and Farooq, S. (1996) Comparison of Isotherm Models for Hydrocarbon Adsorption on Activated Carbon. AIChE Journal, 42, 3191-3201. http://dx.doi.org/10.1002/aic.690421120
[15]	Langmuir, I. (1916) The Constitution and Fundamental Properties of Solids and Liquids: Part I. Solids. Journal of the American Chemical Society, 38, 2221-2295. http://dx.doi.org/10.1021/ja02268a002
[16]	Ozmen, M., Can, K., Akin, I., Arslan, G., Tor, A., Cengeloglu, Y. and Ersoz, M. (2009) Surface Modification of Glass Beads with Glutaraldehyde: Characterization and Their Adsorption Property for Metal Ions. Journal of Hazardous Materials, 171, 594-600. http://dx.doi.org/10.1016/j.jhazmat.2009.06.045
[17]	Elovich, S.Y. and Larinov, O.G. (1962) Theory of Adsorption from Solutions of Non Electrolytes on Solid (I) Equation Adsorption from Solutions and the Analysis of Its Simplest Form, (II) Verification of the Equation of Adsorption Isotherm from Solutions. Izvestiya Akademii Nauk SSSR, Otdelenie Khimicheskikh Nauk, 2, 209-216.
[18]	Tempkin, M.I. and Pyzhev, V. (1940) Kinetics of Ammonia Synthesis on Promoted Iron Catalyst. The Journal of Physical Chemistry, 12, 327-356.
[19]	Aharoni, C. and Ungarish, M. (1977) Kinetics of Activated Chemisorption. Part 2: Theoretical Models. Journal of the Chemical Society, Faraday Transactions, 73, 456-464. http://dx.doi.org/10.1039/f19777300456
[20]	Ho, Y.S., Ng, J.C.Y. and McKay, G. (2000) Kinetics of Pollutant Sorption by Biosorbents: Review. Separation & Purification Reviews, 29, 189-232. http://dx.doi.org/10.1081/SPM-100100009
[21]	Liu, X.S., Cheng, Z.H. and Ma, W. (2009) Removal of Copper by a Modified Chitosan Adsorptive Membrane. Frontiers of Chemical Engineering in China, 3, 102-106. http://dx.doi.org/10.1007/s11705-009-0123-7
[22]	Swapp, S. (2012) Scanning Electron Microscopy (SEM). http://serc.carleton.edu/research_education/geochemsheets/techniques/SEM.html
[23]	Goldberg, S. (2005) Equations and Models Describing Adsorption Processes in Soils. Soil Science Society of America, Madison.
[24]	Egerton, R.F. (2005) Physical Principles of Electron Microscopy: An Introduction to TEM, SEM, and AEM. Springer, Berlin. http://dx.doi.org/10.1007/b136495
[25]	Ho, Y.S. (2006) Second-Order Kinetic Model for the Sorption of Cadmium onto Tree Fern: A Comparison of Linear and Non-Linear Methods. Water Research, 40, 119-125. http://dx.doi.org/10.1016/j.watres.2005.10.040
[26]	Atkins, P.W. (1985) Physical Chemistry. 5th Edition, Oxford University Press, New York, 122-124.