IJEP 44(8): 675-686 : Vol. 44 Issue. 8 (August 2024)
1. Prof. Ramkrishna More College, P.G. Department of Chemistry and Research Centre, Akurdi – 411 044, Maharashtra, India
2. Annasaheb Awate Arts, Commerce and Hutatma Babu Genu Science College, P.G. Department of Chemistry and Research Centre, Manchar – 410 503, Maharashtra, India
3. Annasaheb Magar Mahavidyalaya, Department of Chemistry, Hadapsar, Pune – 411 028, Maharashtra, India
Abstract
The major objective of this study was to assess the 2,4-dichlorophenol (2,4-DCP) adsorption capacity of unconventional, inexpensive adsorbents at high concentrations. 2,4-DCP is considered the most toxic substance and interferes with bacterial respiration. Sulphuric acid treatment was given to biomass of Ailanthus excelsa (SBAE) and used to remove 2,4-DCP from aqueous solutions. The prepared biosorbent was characterized using a variety of techniques, such as Brunauer Emmett Teller (BET), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope and energy-dispersive x-ray spectroscopy (SEM/EDX). The biosorbent’s surface area, surface shape, crystallinity and elemental content were investigated using a variety of analytical techniques. The adsorption process was efficiently improved by optimizing the operating parameters. Batch studies were conducted due to many process factors, including material dose, contact time, concentration, pH and temperature. It was discovered that a pH of 2.0, a biosorbent dosage of 50 mg and an initial phenol concentration of 100 mg/L were the best conditions for 2,4-DCP removal. The biosorption process was significantly impacted by the temperature (288 K). The maximum sorption was found to be 61.81%. Adsorption data was better fitted to the Langmuir, Freundlich and Temkin isotherms with correlation coefficient values of 0.9452, 0.9777 and 0.9306. The rate of sorption was discovered to follow intraparticle diffusion theory and pseudo-second order kinetics, with correlation coefficient values (R2) of 0.9966 and 0.9356, respectively. Since the biosorption process was spontaneous and exothermic, SBAE that has been sieved to a nanoscale is a promising biosorbent for the elimination of 2,4-DCP.
Keywords
Biosorption. Sulphonated biomass of Ailanthus excelsa (SBAE), 2,4-dichlorophenol, Langmuir, Freundlich and Temkin isotherms
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