Cr(VI) Removal from Wastewater by Using Rice Husk Ash (RHA)

  • M. J. Uddin Department of Chemical Engineering and Polymer Science, Shah Jalal University of Science and Technology
  • M. M. R. Khan Department of Chemical Engineering and Polymer Science, Shah Jalal University of Science and Technology
  • M. S. Iftekhar Department of Chemical Engineering and Polymer Science, Shah Jalal University of Science and Technology
  • M. A. Islam Department of Chemical Engineering and Polymer Science, Shah Jalal University of Science and Technology
Keywords: Adsorption, chromium (IV), isotherms, rice husk ash (RHA), tannery effluent, wastewater, water polution

Abstract

Rice husk ash (RHA) was studied as a potential adsorbent for Chromium (VI)removal from wastewater. RHA was able to remove effectively and economically toxic metal from synthetic wastewater. Experiments were done on the removal of Cr(VI) from dichromate solution which is a form of chromium in tannery effluent. The amount of Cr(VI) adsorption increased with the decrease in pH. The optimum parameter was = 2.0 evaluated at pH and the dose rate of the adsorbent was 5 kg RHNm3. The equilibrium data fit well in both the Langmuir and Freundlich isotherms. The study showed that 89.29 x 10-3kg Cr(VI) could be removed by 1 Kg of RHA. Since rice husk (RH) is available and cheap in Bangladesh, it can be used easily as an appropriate adsorbent to remove more than 95% Cr(VI) from tannery wastewater.

References

1. Babel, S., Kurniawan,T. A, Namasivayam, C., and Ranganathan, K. (1999). "Cr(VI) removal from synthetic waste water using coconut shell charcoal and commercial activated carbon modifiedwith oxidizing agents and/or chitosan," Chem. Eng. Process.,54, 951-967.
2. Gang, D., Banerji, S. K., and Clevenger,T. E. (1999). Chromium(VI) removal by modified Conference PVP-coated on Hazardous silica gel. Waste The Research, Columbia.
3. McKay,G., Ottebur, M. S., and Sweeny, A G. (1980). "The removal of color from effluent using various adsorbents," J. WaterRes., 14,15.
4. Namasivayam, C., and Vamuna, R T. (1992). "Removal of Congo red from aqueous solution by biogas waste slurry," Indian J. Chem. Technol,53, 153.
5. Rahman, M. S, Islam,M. A, (1999).Removal of Congo red from textile waste water,B.Sc. in Engineering Thesis, Department of Chemical Engineering and Polymer Science,Shah Jalal Universityof Science and Technology,Sylhet3114, Bangladesh.
6. Randall,J. M., Hautala, E., and McDonald,G. (1973). "Removal of Cupric ion from solution by contact with peanut skin,"J. Appl Po/ym. Sci., 19, 1563.
7. Rivero, M. J., Primo, Oscar M., and Ortiz,I. (2004). "Modelling of Cr(VI) removal from polluted groundwaters by ion exchange," J. Chem. Techno/. Biotechnol, 79, 822-829.
8. Schmuhl, R., Krieg,H. M., and Keizer,K. (2001). "Adsorptionof Cu(lI)and Cr(VI)ionsby chitosan: Kinetics and equilibrium studies," Water5 A, 27, 1.
9. Udaybhaskar, P., Iyengar, L., and Prabhakara, R. A (1990). "Hexavalent chromium interaction with chitosan," J. App/. Po/ym. Sci., 39, 739-747.
Published
2006-12-31
How to Cite
Uddin, M. J., Khan, M. M. R., Iftekhar, M. S., & Islam, M. A. (2006). Cr(VI) Removal from Wastewater by Using Rice Husk Ash (RHA). ASEAN Journal of Chemical Engineering, 6(1), 53-57. Retrieved from https://dev.journal.ugm.ac.id/v3/AJChE/article/view/7659
Issue
Vol 6 No 1 (2006)
Section
Articles

Copyright holder for articles is ASEAN Journal of Chemical Engineering. Articles published in ASEAN J. Chem. Eng. are distributed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. 

Authors agree to transfer all copyright rights in and to the above work to the ASEAN Journal of Chemical Engineering Editorial Board so that the Editorial Board shall have the right to publish the work for non-profit use in any media or form. In return, authors retain: (1) all proprietary rights other than copyright; (2) re-use of all or part of the above paper in their other work; (3) right to reproduce or authorize others to reproduce the above paper for authors’ personal use or for company use if the source and the journal copyright notice is indicated, and if the reproduction is not made for the purpose of sale.