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  Sci. Res. Impact.  

  5(5): 302-313, September 2019

 

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Scientific Research and Impact, Vol. 5(6), pp  302-313 September 2019

doi:1014412/SRI2019.313

(ISSN 2315-5396) 2019 Science Park Journals

Full Length Research Paper

 

Comparison of Langmuir and Freundlich Isotherms for Adsorption of Color and Chemical Oxygen Demand (COD) from Textile wastewater Using Activated Carbon Derived from Groundnut Shell.

 

Zara Kyari Kolo1, Sunday G. Yadima2 andAbimbolaYisau Sangodoyin3.

 

Department of Civil Engineering Technology, Ramat Polytechnic, Maiduguri, Nigeria1,Department of Civil and Water Resources Engineering, University of Maiduguri, Nigeria2, Deparment of Agricultural  and Environmental Engineering, Faculty of Technology,University of Ibadan, Ibadan, Nigeria3.

 

 

 Abstract

Adsorption isotherm is an invaluable curve which describes the phenomenon governing the retention or mobility of a substance from aqueous porous medium to a solid phase. The Langmuir and Freundlich adsorption isotherms were used in this study to model the equilibrium adsorption data obtained for adsorption of Color and CODfrom textile wastewater using activated carbon produced from groundnut shell. The adsorption process   was done under two conditions viz: varying contact time and varying  dosage. The Langmuir and Freundlich correlation coefficient were determined for each parameter. The equilibrium adsorption data fitted well to the two models for both Color and COD with a better fit obtained from the Langmuir model as was evidenced from the highest Rvalue of  0.9319 as compared to the Freundlich isotherm with highest value of 0.8734.

 

Key words: Adsorption isotherm, color, COD, Textile wastewater.

 

                                                                                                       

 

 

            

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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