Comparative analysis on isotherm and kinetic modelling for the adsorption of carcinogenic pollutants onto modified graphite intercalation compounds

Authors

  • Faisal Raza Institute of Energy and Environmental Engineering, University of the Punjab, Lahore, Pakistan
  • Tausif Ahmad Institute of Energy and Environmental Engineering, University of the Punjab, Lahore, Pakistan
  • Hafiz Muhammad Anwaar Asghar Institute of Chemical Engineering & Technology, University of the Punjab, Lahore, Pakistan
  • Muhammad Irfan Pakistan Council of Scientific and Industrial Research, Lahore, Pakistan
  • Hafiz Abdul Mannan Institute of Polymer and Textile Engineering, University of the Punjab, Lahore, Pakistan
  • Aqeel Afzal Institute of Energy and Environmental Engineering, University of the Punjab, Lahore, Pakistan
  • Zaeem Bin Babar Institute of Energy and Environmental Engineering, University of the Punjab, Lahore, Pakistan

DOI:

https://doi.org/10.54693/piche.05317

Abstract

Industrial, agricultural, and domestic activities have been generating various carcinogenic pollutants and imparting toxic, nonbiodegradable, and long-enduring impacts on both humans and animals, even at low concentrations. This article has been reported for the first time to investigate the kinetics and isotherms models of carcinogenic pollutants including Acid violet 17 (AV17), Mercaptan 1, Humic acid, Phenol and Methylene Blue (MB), which were adsorbed on the surface of NYEX® 1000. The effects of adsorbent dosage and contact time for AV 17 (8.2-70 ppm), contact time (0–180 min), Marcaptan 1 (11.7–100 ppm), contact time (0–180 min), Ethane Thiol (7.5-50 ppm), contact time (0–180 min), Humic acid (21.7-60 ppm), contact time (0–120 min), Phenol (8.8-70 ppm), contact time (0–180 min) and MB (11.7-100 ppm), contact time (0–180 min) were investigated against NYEX® 1000 respectively. The kinetics findings showed the adsorption of Humic acid (R2=0.99908), AV 17 (R2=0.9977), Mercaptan 1 (R2=0.9982), Phenol (R2=0.9989) and MB (R2=0.9966) on the surface of NYEX® 1000 were well described by Pseudo-second order kinetics. The Pseudo-1st order kinetics revealed lower regression coefficient values for all pollutants, confirming it to be least followed. The Isotherm models such as Halsey (R2=0.9971, R2=0.9485) showed the good agreement to describe the equilibrium of AV 17 and Phenol adsorption respectively. On the contrary, equilibrium adsorption of Mercaptan 1, Humic acid and MB on the surface of NYEX® 1000 was found to be well described by Dubinin-Radushkevich with R2= 0.984, 0.9331 and 0.9766 respectively. It would be undoubtedly valuable for achieving a comprehensive explanation of the adsorption process and ultimately enhancing the removal performance.

Published

2025-10-25

How to Cite

Raza, F., Ahmad, T., Muhammad Anwaar Asghar, H., Irfan, M., Abdul Mannan, H., Afzal, A., & Bin Babar, Z. (2025). Comparative analysis on isotherm and kinetic modelling for the adsorption of carcinogenic pollutants onto modified graphite intercalation compounds. Journal of the Pakistan Institute of Chemical Engineers, 53(1). https://doi.org/10.54693/piche.05317

Issue

Vol. 53 No. 1 (2025): Journal of the Pakistan Institute of Chemical Engineers

Section

Articles

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