Adsorption of Chromium (Vi) from Aqueous Solutions using Low Cost Adsorbent: Equilibrium and Regeneration Studies

Main Article Content

Ihsan Habib Dakhil

Abstract

The adsorption of Cr (VI) from aqueous solution by spent tea leaves (STL) was studied at different initial Cr (VI) concentrations, adsorbent dose, pH and contact time under batch isotherm experiments The adsorption experiments were carried out at 30°C and the effects of the four parameters on chromium uptake to establish a mathematical model description percentage removal of Cr (VI). The
analysis results showed that the experimental data were adequately fitted to second order polynomial model with correlation coefficients for this model was (R2 = 0.9891). The optimum operating parameters of initial Cr (VI) concentrations, adsorbent dose, pH and contact time were 50 mg/l, 0.7625 g, 3 and 100 min, respectively. At these conditions, the maximum percentage removal of Cr (VI) was 92.88%. The amounts of Cr (VI) adsorbed onto STL were highly affected by the solution pH value. Equilibrium data was modeled with Langmuir and Freundlich models isotherms. Langmuir model is found very well represent the equilibrium data with correlation factor is close to unity than the Freundlich model. The maximum monolayer adsorption capacity was found to be 47.98 mg/g at optimum conditions. The saturated adsorbent was regenerated by base treatment and found to be reuse efficiently after fourth cycle
at optimum conditions as well as for safe disposal of base that contains high concentration of Cr (VI) is precipitated as barium chromate.

Article Details

Section

Articles

How to Cite

“Adsorption of Chromium (Vi) from Aqueous Solutions using Low Cost Adsorbent: Equilibrium and Regeneration Studies” (2013) Journal of Engineering, 19(11), pp. 1395–1406. doi:10.31026/j.eng.2013.11.04.

References

- Aliabadi M., Morshedzadeh K. and Soheyli H., (2006), “Removal of Hexavalent Chromium from Aqueous Solution by Lignocellulosic Solid

Wastes”, Int. J. Environ. Sci. Technol. 3, pp. 321–325.

- APHA, (1998), Standard Methods for the Examination of Water and Wastewater, 20th ed., APHA, AWWA, WPCF, Washington D.C., New York.

- Bailey. S., Olin T., Bricka R. and Adrian D., (1999), “A review of Potentially Low Cost Sorbents for Heavy Metals”, Water Research, 33, pp. 2469-2479.

- Baral S., Das S., Rath P. and Chaudhury R., (2007),“Chromium (VI) Removal by Calcined Bauxite”, Biochem. Eng. J., 34, pp. 69–75.

- Babu B. and Gupta S., (2008), “Adsorption of Cr (VI) Using Activated Neem Leaves as an Adsorbent: Kinetic Studies”, Adsorption, 14, pp. 85–92.

- Box, G. E. and Hunter, J. C., (1957), “Multifactor Experimental Design for Exploring Response Surface”, Ann. Math, vol.28, p.195.

- Bhattacharya A., Naiya T., Mandal S. and Das S., (2008), “Adsorption, Kinetics and Equilibrium Studies on Removal of Cr(VI) from Aqueous Solutions Using Different Low Cost Adsorbents”, Chemical Engineering Journal, 137, pp. 529–541.

- Cimino G., Passerini A. and Toscano G., (2000), “Removal of Toxic Cations and Cr(VI) from Aqueous Solution by Hazelnut Shell”, Water Res. 34, pp. 2955–2962.

- Davis, T.A., Volesky, B., Mucci, A., (2003), “ A review of the Biochemistry of Heavy Metal Biosorption by Brown Algae”, Wat. Res. 37, pp. 4311-4330.

- Freundlich H., (1906), “Adsorption in Solution”, Phys.Chem. Soc., 40, pp. 1361–1368.

- Gupta S. and Babu B., (2009), “Removal of Toxic Metal Cr(VI) from Aqueous Solutions Using Sawdust as Adsorbent”, Chemical Engineering

Journal, 150, pp. 352-365.

- Hassan M., Samaneh A. and Morteza B., (2012), “Removal of Chromium (VI) and Cadmium from Aqueous Solution Using Orange Peel as A Cheap Sorbent”, Journal of Applied Sciences in Environmental Sanitation Vol. 7, 4, pp. 269-273.

- Jianlong W., Xinmin Z. and Yi Q., (2002), “Removal of Cr (VI) from Aqueous Solution by Macroporous Resin Adsorption”, J. Environ. Sci.

Health A 35, 1211–1230, 2000.

- Kozlowski C. and Walkowiak W., (2002),“Removal of Chromium (VI) from Aqueous Solutions by Polymer Inclusion Membranes”, Water Res., 36,pp. 4870–4876.

- Li C., Chen H. and Li Z., (2004),“Adsorptive Removal of Cr(VI) by Fe-Modified Steam Exploded Wheat Straw”, Proc. Biochem., 39, pp. 541–545.

- Mohan D., Singh K. and Singh V., (2005), “Removal of Hexavalent Chromium from Aqueous Solution Using Low Cost Activated Carbons

Derived from Agricultural Waste Materials and Activated Carbon Fabric Cloth”, Ind. Eng. Chem. Res., 44, pp. 1027–1042.

- Mohan D. and Pittman C., (2006), “Activated Carbons and Low Cost Adsorbents for Remediation of Trivalent and Hexavalent Chromium

from Water”, J. Hazard. Mater, B137, pp. 762–811.

- Montogomery, D.G., (1984), “Design and Analysis of Experiments”, 2nd ed., John Wiley.

- Mohammad R., Mina S. and Pourya B., (2011), “Removal of Cr (VI) from Aqueous solution Using Pine Needles Powder as Adsorbent”, Journal of Applied Sciences in Environmental Sanitation, vol. 6, No. 1, pp. 1-13.

- McKay, G., Blair, H. and Gardener J., (1982), “Adsorption of Dyes on Chitin. I. Equilibrium Studies”, J. Appl. Polym. Sci., 27, pp. 3043 – 3057.

- Roundhill D. and Koch H., (2002), “Methods and Techniques for the Selective Extraction and Recovery of Oxo-Anions”, Chem. Soc. Rev., 31, pp. 60–67.

- Singh K., Hasan S., Talat M, Singh V. and Gangwar S., (2009), “Removal of Cr (VI) from aqueous solutions using wheat bran”, Chemical Engineering Journal, 151,113–121.

- Surendra B. and Dharmendra S., (2012),“Adsorption of Cr (VI) Metal Ion from Aqueous Solutions on Low Cost Adsorbent”, Journal Biointerface Research in Applied Chemistry, vol. 2, 2, pp. 284-290.

- Uysal M. and Irfan A., (2007), “Removal of Cr (VI) from Industrial Wastewaters by Adsorption”, Part I: Determination of optimum Condition, J. Hazard Mater, 149, pp. 482–491.

- Weber T. and Chakraborti R., (1974), “Pore and Solid Diffusion Models for Fixed Bed Adsorbents”, AIChE J., 20, pp. 228–238.

- Zivorad R., (2004), “Design of Experiments in Chemical Engineering”, Wiley-VCH, ISBN: 3.527.31142.4

Similar Articles

You may also start an advanced similarity search for this article.