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Bisphenol A adsorption using modified aloe vera leaf-wastes derived bio-sorbents from aqueous solution: kinetic, isotherm, and thermodynamic studies.

Farzad HashemzadehSeyed Hamed DerakhshandehMohammad Mahdi SooriFereshteh KhedriSaeed Rajabi
Published in: International journal of environmental health research (2023)
Reactive-oxygen-species are produced more often in the body when bisphenol A (BPA), an endocrine-disrupting-substance, is present. In this investigation, bio-sorbents from an aqueous solution adapted from Aloe-vera were used to survey BPA removal. Aloe-vera leaf wastes were used to create activated carbon, which was then analyzed using Fourier transform infrared (FTIR), Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Thermogravimetric analysis (TGA), Zeta potential, and Brunauer-Emmett-Teller (BET) techniques. It was revealed that the adsorption process adheres to the Freundlich isotherm model with R 2 >0.96 and the pseudo-second-order kinetic model with R 2 >0.99 under ideal conditions (pH = 3, contact time = 45 min, concentration of BPA = 20 mg.L -1 , and concentration of the adsorbent = 2 g.L -1 ). After five-cycle, the efficacy of removal was greater than 70%. The removal of phenolic-chemicals from industrial-effluent can be accomplished with the assistance of this adsorbent in a cost-effective and effective-approach.
Keyphrases
  • aqueous solution
  • electron microscopy
  • reactive oxygen species
  • anaerobic digestion
  • wastewater treatment
  • cross sectional
  • human health
  • mass spectrometry
  • case control
  • risk assessment