Chromium Ions Removal by Capacitive Deionization Process – Optimization of the Operating Parameters with Response Surface Methodology

An innovative desalination method called electrosorption or capacitive deionization (CDI) has significant benefits for wastewater treatment. This process is performed by using a carbon fiber electrode as a working electrode to remove hexavalent chromium ions from an aqueous solution. The pH, NaCl co...

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Main Authors: Zainab M. Issa, Rasha H. Salman
Format: Article
Language:English
Published: Polish Society of Ecological Engineering (PTIE) 2023-01-01
Series:Journal of Ecological Engineering
Subjects:
Online Access:http://www.jeeng.net/Chromium-Ions-Removal-by-Capacitive-Deionization-Process-Optimization-of-the-Operating,155953,0,2.html
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author Zainab M. Issa
Rasha H. Salman
author_facet Zainab M. Issa
Rasha H. Salman
author_sort Zainab M. Issa
collection DOAJ
description An innovative desalination method called electrosorption or capacitive deionization (CDI) has significant benefits for wastewater treatment. This process is performed by using a carbon fiber electrode as a working electrode to remove hexavalent chromium ions from an aqueous solution. The pH, NaCl concentration, and cell voltage were optimized using the Box-Behnken experimental design (BDD) in response surface methodology (RSM) to study the effects and interactions of selected variables. To attain the relationship between the process variables and chromium removal, the experimental data were subjected to an analysis of variance and fitted with a quadratic model. The optimum conditions to remove Cr(VI) ions were: pH of 2, a cell voltage of 4.3V, and NaCl concentration of 1.4 g/L. This study demonstrated that the carbon fiber electrode was very efficient in Cr(VI) ions removal and the BBD methodology was a practical and effective strategy for predicting the results of various experimental conditions during a CDI process for the removal of chromium ions.
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spelling doaj.art-28f8f9cad8d54fc2bbe8d293a08a96cc2022-12-22T03:46:46ZengPolish Society of Ecological Engineering (PTIE)Journal of Ecological Engineering2299-89932023-01-01241516510.12911/22998993/155953155953Chromium Ions Removal by Capacitive Deionization Process – Optimization of the Operating Parameters with Response Surface MethodologyZainab M. Issa0Rasha H. Salman1https://orcid.org/0000-0001-9353-9096Department of Chemical Engineering, College of Engineering, University of Baghdad, Baghdad, IraqDepartment of Chemical Engineering, College of Engineering, University of Baghdad, Baghdad, IraqAn innovative desalination method called electrosorption or capacitive deionization (CDI) has significant benefits for wastewater treatment. This process is performed by using a carbon fiber electrode as a working electrode to remove hexavalent chromium ions from an aqueous solution. The pH, NaCl concentration, and cell voltage were optimized using the Box-Behnken experimental design (BDD) in response surface methodology (RSM) to study the effects and interactions of selected variables. To attain the relationship between the process variables and chromium removal, the experimental data were subjected to an analysis of variance and fitted with a quadratic model. The optimum conditions to remove Cr(VI) ions were: pH of 2, a cell voltage of 4.3V, and NaCl concentration of 1.4 g/L. This study demonstrated that the carbon fiber electrode was very efficient in Cr(VI) ions removal and the BBD methodology was a practical and effective strategy for predicting the results of various experimental conditions during a CDI process for the removal of chromium ions.http://www.jeeng.net/Chromium-Ions-Removal-by-Capacitive-Deionization-Process-Optimization-of-the-Operating,155953,0,2.htmlcapacitive deionizationelectrosorptioncarbon fiberchromiumwastewater
spellingShingle Zainab M. Issa
Rasha H. Salman
Chromium Ions Removal by Capacitive Deionization Process – Optimization of the Operating Parameters with Response Surface Methodology
Journal of Ecological Engineering
capacitive deionization
electrosorption
carbon fiber
chromium
wastewater
title Chromium Ions Removal by Capacitive Deionization Process – Optimization of the Operating Parameters with Response Surface Methodology
title_full Chromium Ions Removal by Capacitive Deionization Process – Optimization of the Operating Parameters with Response Surface Methodology
title_fullStr Chromium Ions Removal by Capacitive Deionization Process – Optimization of the Operating Parameters with Response Surface Methodology
title_full_unstemmed Chromium Ions Removal by Capacitive Deionization Process – Optimization of the Operating Parameters with Response Surface Methodology
title_short Chromium Ions Removal by Capacitive Deionization Process – Optimization of the Operating Parameters with Response Surface Methodology
title_sort chromium ions removal by capacitive deionization process optimization of the operating parameters with response surface methodology
topic capacitive deionization
electrosorption
carbon fiber
chromium
wastewater
url http://www.jeeng.net/Chromium-Ions-Removal-by-Capacitive-Deionization-Process-Optimization-of-the-Operating,155953,0,2.html
work_keys_str_mv AT zainabmissa chromiumionsremovalbycapacitivedeionizationprocessoptimizationoftheoperatingparameterswithresponsesurfacemethodology
AT rashahsalman chromiumionsremovalbycapacitivedeionizationprocessoptimizationoftheoperatingparameterswithresponsesurfacemethodology