Materials 2013, 6(7), 2723-2746; doi:10.3390/ma6072723
Article

Fractional Factorial Design Study on the Performance of GAC-Enhanced Electrocoagulation Process Involved in Color Removal from Dye Solutions

1email, 1,* email, 2email, 3email, 1email and 4email
Received: 21 January 2013; in revised form: 8 April 2013 / Accepted: 10 May 2013 / Published: 10 July 2013
(This article belongs to the Special Issue Advances in Colorants)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The aim of this study was to determine the effects of main factors and interactions on the color removal performance from dye solutions using the electrocoagulation process enhanced by adsorption on Granular Activated Carbon (GAC). In this study, a mathematical approach was conducted using a two-level fractional factorial design (FFD) for a given dye solution. Three textile dyes: Acid Blue 74, Basic Red 1, and Reactive Black 5 were used. Experimental factors used and their respective levels were: current density (2.73 or 27.32 A/m2), initial pH of aqueous dye solution (3 or 9), electrocoagulation time (20 or 180 min), GAC dose (0.1 or 0.5 g/L), support electrolyte (2 or 50 mM), initial dye concentration (0.05 or 0.25 g/L) and current type (Direct Current—DC or Alternative Pulsed Current—APC). GAC-enhanced electrocoagulation performance was analyzed statistically in terms of removal efficiency, electrical energy, and electrode material consumptions, using modeling polynomial equations. The statistical significance of GAC dose level on the performance of GAC enhanced electrocoagulation and the experimental conditions that favor the process operation of electrocoagulation in APC regime were determined. The local optimal experimental conditions were established using a multi-objective desirability function method.
Keywords: electrocoagulation; granular activated carbon; coupling process; fractional factorial design; Acid Bleu 74; Basic Red 1; Reactive Black 5; alternating pulse current
PDF Full-text Download PDF Full-Text [1206 KB, Updated Version, uploaded 22 July 2013 09:02 CEST]
The original version is still available [1204 KB, uploaded 10 July 2013 12:29 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Secula, M.S.; Cretescu, I.; Cagnon, B.; Manea, L.R.; Stan, C.S.; Breaban, I.G. Fractional Factorial Design Study on the Performance of GAC-Enhanced Electrocoagulation Process Involved in Color Removal from Dye Solutions. Materials 2013, 6, 2723-2746.

AMA Style

Secula MS, Cretescu I, Cagnon B, Manea LR, Stan CS, Breaban IG. Fractional Factorial Design Study on the Performance of GAC-Enhanced Electrocoagulation Process Involved in Color Removal from Dye Solutions. Materials. 2013; 6(7):2723-2746.

Chicago/Turabian Style

Secula, Marius S.; Cretescu, Igor; Cagnon, Benoit; Manea, Liliana R.; Stan, Corneliu S.; Breaban, Iuliana G. 2013. "Fractional Factorial Design Study on the Performance of GAC-Enhanced Electrocoagulation Process Involved in Color Removal from Dye Solutions." Materials 6, no. 7: 2723-2746.

Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert