Removal of Bisphenol-A from Aqueous Solution Using Rice Husk Nanosilica: Adsorption Kinetics, Equilibrium and Thermodynamic Studies

Authors

  • Aderonke Aminat Mohammed Department of Industrial Chemistry, University of Ilorin, PMB 1515, Ilorin, Nigeria
  • Azeez Olayiwola Idris Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa
  • Benjamin Olawale Orimolade Department of Applied Chemistry, University of Johannesburg, Johannesburg, South Africa/Department of Industrial Chemistry, University of Ilorin, PMB 1515, Ilorin, Nigeria
  • Folahan Amoo Adekola Department of Industrial Chemistry, University of Ilorin, PMB 1515, Ilorin, Nigeria
  • Oluwaseyi Damilare Saliu Department of Industrial Chemistry, University of Ilorin, PMB 1515, Ilorin, Nigeria
  • Taofeek Yusuf Department of Industrial Chemistry, University of Ilorin, PMB 1515, Ilorin, Nigeria
Abstract:

This study evaluates the adsorption of bisphenol-A (BPA) from aqueous solutions using nanosilicaobtained from rice husk. Nanosilica (79 nm) was extracted from acid and thermal treated rice huskwaste. The rice husk nanosilica (RHS) was fully characterized through X-Ray DiffractionSpectroscopy (XRD), Scanning Electron Microscopy (SEM), X-Ray Fluorescence Spectroscopy(XRF) and Fourier Transmittance Infrared Spectroscopy (FTIR). The spectroscopic analyses resultsrevealed that the rice husk ash contains large fraction of amorphous silica. Batch adsorptionexperiments were carried out on BPA as a function of initial concentration, contact time, pH,adsorbent dosage and temperature. The maximum amount of BPA adsorbed was 4.267 mg/g withan optimum contact time of 45 min for 50 mg/L BPA solution at pH 8. The adsorption data wereanalyzed with adsorption isotherms and fitted best into the Langmuir model with R2 value of 0.994.The adsorption process followed the pseudo second order kinetics and was exothermic while thenegative value of Gibbs free energy obtained revealed that the process is feasible at lowertemperature.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Kinetics and Equilibrium Studies of the Removal of Blue Basic 41 and Methylene Blue from Aqueous Solution Using Rice Stems

Synthetic dyes are among the most common contaminants of the environment. Therefore, the aim of this study was investigation the removal of Basic Blue 41 (BB41) and Methylene Blue (MB) from industrial effluents by useing raw and modified rice stems. In this study raw and modified rice stems treated chemically with Citric Acid (CA) and were used to explore the potentiality of rice stems for ...

full text

removal of arsenic from aqueous solution using silica ceramic: adsorption kinetics and equilibrium studies

the removal of as(iii) ions from aqueous solutions has been investigated using silica ceramic under different experimental conditions of initial arsenite concentration, adsorbent dose, temperature and ph. better removal was obtained at temperature 25âºc and ph 7.5. the adsorption data have been explained in terms of langmuir and freundlich equations. the sorption kinetics was tested for the pse...

full text

Application of Copper Vanadate Nanoparticles for Removal of Methylene Blue from Aqueous Solution: Kinetics, Equilibrium, and Thermodynamic Studies

Copper vanadate nanoparticles were synthesized by a simple coprecipitation method in an aqueous medium and the products were used as adsorbents for eliminating methylene blue (MB) from water. The structure and morphology of the produced nanoparticles were evaluated through X-Ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM) analysis. The results...

full text

Adsorption of Malachite Green from Aqueous Solution by Nanozeolite Clinoptilolite: Equilibrium, Kinetic and Thermodynamic Studies

The object of present study was to examine the adsorption potential of nanozeolite clinoptilolite (CP) for the removal of malachite green (MG) from aqueous phase in a batch equilibrium system. SEM, EDX, XRF, XRD and FT-IR techniques of characterization of zeolite were applied. The effects of initial pH solution, adsorbent dose, temperature, contact time and initial MG concentration on adsorptio...

full text

Removal of phenol from aqueous solution by adsorption onto seashells: equilibrium, kinetic and thermodynamic studies

The efficacy of seashells as a new adsorbent for removal of phenol from aqueous solutions was studied by performing batch equilibrium tests under different operating parameters such as solution pH, adsorbent dose, initial phenol concentration, and temperature. The phenol removal efficiency remained unaffected when the initial pH of the phenol solution was in the range of 3–8. The amount of phen...

full text

Cadmium Removal from Aqueous Solution by Canola Residues: Adsorption Equilibrium and Kinetics

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 12  issue 3

pages  8- 21

publication date 2018-06-01

{@ msg @}

By following a journal you will be notified via email when a new issue of this journal is published.

Keywords

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023