Optimization of bromate adsorption onto Fe-CNTs nanocomposite using response surface methodology

Authors

  • Deeksha Ranjan 1. Department of Applied Sciences and Humanities, Faculty of Engineering and Technology, Rama University, Mandhana, Kanpur-209217, U.P., India; 2. Department of Chemistry, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, U.P., India
  • Moonis Ali Khan Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
  • Marta Otero CESAM (Centre for Environmental and Marine Studies), Department of Environment and Planning, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
  • Masoom Raza Siddiqui Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
  • Shareefa Ahmed Alshaeef Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia

DOI:

https://doi.org/10.17159/wsa/2021.v47.i4.3873

Keywords:

Fe-CNTs nanocomposite, BrO3-, adsorption, Box-Behnken design, optimization

Abstract

This study was aimed at employing response surface methodology (RSM) for optimization of process variables and identifying optimal conditions for the adsorption of bromate (BrO3-) from contaminated water using multi-walled carbon nanotubes, based on iron hydr(oxide), Fe-CNTs nanocomposite. Fifteen experimental runs were conducted in batch mode to study the effect of individual as well as interactive process variables, i.e., pH, BrO3− initial concentration, and adsorbent dose, on the removal of BrO3− using Box–Behnken design (BBD) of RSM. The coefficient of determination (R2) at 98.34% indicated a good agreement between actual and predicted values. The main effect and contour plot were drawn to obtain the independent and interactive effect of operational variables on BrO3− uptake. A process optimization curve was drawn to determine the optimum operating conditions that lead to a desirable response. The optimum conditions for BrO3− adsorption using Fe-CNTs nanocomposite were found to be pH 2.0, initial BrO3− concentration of 10.0 mg/L, and adsorbent dose of 0.010 g per 50 mL solution.

 

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Published

2021-10-28

Issue

Vol. 47 No. 4 October (2021): Water SA

Section

Research paper

License

Copyright (c) 2021 Deeksha Ranjan, Moonis Ali Khan, Marta Otero, Masoom Raza Siddiqui, Shareefa Ahmed Alshaeef

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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How to Cite

Deeksha Ranjan (2021) “Optimization of bromate adsorption onto Fe-CNTs nanocomposite using response surface methodology”, Water SA, 47(4 October). doi:10.17159/wsa/2021.v47.i4.3873.