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Vol. 35 No. 11 (2023): Vol 35 Issue 11, 2023

Copyright (c) 2023 Hilary Rutto, Linda Sibali , Robert Mbedzi, Tumisang Seodigeng

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Optimization of Ca2+ Removal from Cooling Tower Water using Amberlite IR120 and Amberjet 1200 Resins: A Response Surface Methodology Study

https://doi.org/10.14233/ajchem.2023.30234
Hilary Rutto
Clean Technology and Applied Materials Research Group, Department of Chemical and Metallurgical Engineering, Vaal University of Technology, Private Bag X021, South Africa
https://orcid.org/0000-0002-7863-5167
Linda Sibali
Department of Environmental Sciences, College of Agriculture and Environmental Sciences, UNISA, Florida, 1709, South Africa
https://orcid.org/0000-0003-2968-8390
Robert Mbedzi
1Clean Technology and Applied Materials Research Group, Department of Chemical and Metallurgical Engineering, Vaal University of Technology, Private Bag X021, South Africa
https://orcid.org/0000-0003-3406-2915
Tumisang Seodigeng
Clean Technology and Applied Materials Research Group, Department of Chemical and Metallurgical Engineering, Vaal University of Technology, Private Bag X021, South Africa
https://orcid.org/0000-0002-3984-293X

Corresponding Author(s) : Hilary Rutto

hilaryr@vut.ac.za

Asian Journal of Chemistry, Vol. 35 No. 11 (2023): Vol 35 Issue 11, 2023

Abstract

n present study, the removal of Ca2+ from cooling tower water using Amberlite IR120 and Amberjet 1200 was optimized using the response surface methodology (RSM). The effect of operational parameters such as contact time (min), pH, dosage (mL), concentration (mg/L) and temperature (K) were investigated using a central composite design. The regeneration of the Amberlite IR120 and Amberjet were also studied. The study aimed to apply RSM to investigate and optimize the ion exchange operating parameters. Furthermore, the second-order empirical model was developed and correlated sufficiently to the ion exchange experimental data. The optimal ion exchange operating conditions for Amberlite IR120 and Amberjet 1200 were found to be: contact time was 120 min, dosage of 150 mL, the initial pH level of 2, a concentration of 4,00 mg/L and temperature of 343 K. Regeneration of Amberlite IR120 and Amberjet 1200 using 0.5 M NaCl stripping solution initially showed an increase in % Ca2+ and Mg2+ removal, then a decrease in subsequent cycles.

Keywords

Amberlite IR120 Amberjet 1200, Cooling tower water, Response surface methodology, Ca2+ Mg2+ Regeneration
Rutto, H., Sibali , L., Mbedzi, R., & Seodigeng , T. (2023). Optimization of Ca2+ Removal from Cooling Tower Water using Amberlite IR120 and Amberjet 1200 Resins: A Response Surface Methodology Study. Asian Journal of Chemistry, 35(11), 2739–2748. https://doi.org/10.14233/ajchem.2023.30234
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