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IJSTR >> Volume 9 - Issue 6, June 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Removal of Chromium from Wastewater Using Black Cotton Soil Amended with Fly Ash and Bentonite Mixtures

[Full Text]

 

AUTHOR(S)

Bhavya K, Nagesh M.D., Shankara, S. N. Maya Naik

 

KEYWORDS

Pollution, Fly ash, Bentonite, Chromium, Sorption, Adsorption, Isotherms

 

ABSTRACT

Majority of solid wastes generated in India is directly disposed on land/water bodies in an unscientific manner. This poor handling practices of liquid/solid wastes has resulted many incidents of water, soil and air pollution contamination. The heavy metals/toxicants which are present in these wastes can enter human body through contaminated environments which leads to major health issues. In the process of finding the defensive/remedial measures to safeguard the environment an attempt has been made tostudy adsorption of Cr(VI) metal ion from aqueous solution onto different mixtures of low cost adsorbents, viz., black cotton soil (BCS) – fly ash (FA) and BCS – Bentonite (BT) mixtures using batch kinetics. The relation between the percent removal of chromium and various factors such as adsorbent dosage, contact time pH, and initial concentration of metal ion have been studied. The residual concentration of the chromium ion was resolved using AAS (Atomic Absorption Spectrophotometer). It is observed that maximum adsorption was in acidic range and interaction time of 50 min at 150 rpm. BCS–FA mixture has showed better adsorption than BCS–BT under varied proportions and identical experimental conditions. The sorption data has been modelled and compared with classical Langmuir and Freundlich adsorption isotherms. Langmuir isotherm is found to be best fit for both BCS-FA and BCS-BT mixtures, due to the R2 value which is observed to be higher when compared to Freundlich model indicating monolayer adsorption.

 

REFERENCES

[1] M. Saifuddin, Nomanbhay, and Kumaran Palanisamy, "Removal of heavy metal from industrial wastewater using chitosan coated oil palm shell charcoal," Electronic Journal of Biotechnology, vol. 8, pp. 43-53, 2005.
[2] O. S. Amuda, A. A. Giwa, and I. A. Bello, "Removal of heavy metal from industrial wastewater using modified activated coconut shell carbon," Biochemical Engineering Journal, vol. 36, pp. 174–181, 2007.
[3] Vaddi Dhilleswara Rao, Mushini Venkata Subba Rao, and M. P. S. Murali Krishna, "Removal of Chromium (VI) from aqueous solutions using chemically activated Syzygium cumini leaves carbon Powder as an adsorbent," IOSR Journal of Applied Chemistry, vol. 10, pp. 20-27, 217.
[4] Shankara, B. S. Nagendra Prakash, and P. V. Sivapullaiah, "Removal Efficiencies Of Iron From Different Soils During Different Processes Of Electro-Kinetic Extraction," Poll Res., vol. 3, pp. 97-105, 2015-2016 2015.
[5] Shankara, M. Naik, and P. V. Sivapullaiah, "Permeability of sand-bentonite and sand-fly ash mixtures," Asian Journal of Water, Environment and Pollution, vol. 11, pp. 19-26, 2013-2014 2014.
[6] A. El-Sikaily, A. El Nemr, A. Khaled, and O. Abdelwahab, "Removal of toxic chromium from wastewater using green alga Ulva lactuca and its activated carbon," Journal of Hazardous Materials, vol. 148, pp. 216–228, 2007.
[7] Satya Vani Yadla, V. Sridevi, and M. V. V. Chandana Lakshmi, "A Review on Adsorption of Heavy Metals from Aqueous Solution," Journal of Chemical, Biological and Physical Sciences, vol. 2, pp. 1585-1593, 2012.
[8] Dinesh Mohan, Kunwar P. Singh, and Vinod K. Singh, "Trivalent chromium removal from wastewater using low cost activated carbon derived from agricultural waste material and activated carbon fabric cloth," Journal of Hazardous Materials, vol. B135 pp. 280–295, 2006.
[9] Shankara, M. Naik, and P. V. Sivapullaiah, "Modelling of the Cu and Fe transport in sand-bentonite and sand-fly ash mixtures," International Journal of Earth Sciences and Engineering, vol. 7, pp. 325-330, 2013-2014 2014.
[10] Standard Methods for the Examination of Water and Wastewater," A. P. H. A. (APHA), Ed., ed: The American Water Works Association (AWWA), and the Water Environment Federation (WEF) Publication. , 2006.
[11] Shankara, M. Naik, and P. V. Sivapullaiah, "Removal of fluoride from leachates using local soil column " Ecology, Environment and Conservation vol. 24, pp. 320-325 2018.
[12] G. Venkata Ramaiah, S. Krishnaiah, and Shankara, "Leachability behavior of heavy metals by contaminated soil with additives," Ecology, Environment and Conservation vol. 25, pp. 643-649, 2019.
[13] Metcalf & Eddy, Watewater Engineering Treatment and Reuse. New Delhi: Tata McGraw Hill Education Private Limited, 2005.
[14] Umesh K.Garg, M. P. Kaur, V. K. Garg, and D. Sud, "Removal of hexavalent chromium from aqueous solution by agricultural waste biomass," Journal of Hazardous Materials vol. 140, pp. 60–68, 2007