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Title: Acid treated RHWBAC electrode performance for Cr(VI) removal by capacitive deionization and CFD analysis study
Authors: Gaikwad M.S.
Balomajumder, Chandrajit
Tiwari A.K.
Published in: Chemosphere
Abstract: In this work acid-treated activated carbon was developed from rice husk, and it was used as raw material for Capacitive deionization (CDI) electrodes. The prepared acid treated rice husk waste biomass activated carbon (RHWBAC) electrode was used for the electrosorption of Cr(VI) from the aqueous medium. This RHWBAC electrode shows maximum electrosorption capacity was 2.8316 mg g of initial feed concentration 100 mg L at 1.2 V. The result shows that the electrosorption method follows Redlich Peterson isotherm, Langmuir isotherm model, and Pseudo first order kinetic model. The computational fluid dynamics (CFD) analysis of square CDI cell design shows that the stagnant regions decreases by increasing the flow rate of feed. The present work concluded that the RHWBAC could be capable electrode material for Cr(VI) sorption from low concentrated aqueous feed. 
Citation: Chemosphere(2020), 254(): -
Issue Date: 2020
Publisher: Elsevier Ltd
Keywords: Capacitive deionization
CFD study
Cr(VI) removal
Rice husk electrode
ISSN: 456535
Author Scopus IDs: 55602381700
Author Affiliations: Gaikwad, M.S., Department of Chemical Engineering, Dharmsinh Desai University, Nadiad, Gujarat 387001, India
Balomajumder, C., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Tiwari, A.K
Funding Details: Indian Institute of Technology Roorkee, IITR.The authors wish to thanks the Department of Chemical Engineering, Indian Institute of Technology Roorkee and Dhamsinh Desai University, India for providing facilities and valuable support.
Corresponding Author: Gaikwad, M.S.; Department of Chemical Engineering, India; email:
Appears in Collections:Journal Publications [CH]

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