Electrocoagulation of a real reactive dyebath effluent using aluminum and stainless steel electrodes

Idil Arslan-Alaton; Işik Kabdaşli; Deniz Hanbaba; Elif Kuybu

doi:10.1016/j.jhazmat.2007.09.032

Electrocoagulation of a real reactive dyebath effluent using aluminum and stainless steel electrodes

Idil Arslan-Alaton^*
, Işik Kabdaşli
, Deniz Hanbaba
, Elif Kuybu

^*Corresponding author for this work

Department of Environmental Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

75 Citations (Scopus)

Abstract

Treatment of real reactive dyebath effluent comprising of an exhausted reactive dyebath and its sequential rinses with electrocoagulation (EC) using aluminum (Al) and stainless steel (SS) electrodes was investigated. The experimental study focused on the effect of applied current density (22-87 mA/cm²; at an initial, optimum pH of 5.5) on decolorization and COD removal rates using Al and SS as electrode materials. Results have indicated that the treatment efficiency was enhanced appreciably by increasing the applied current density when Al electrodes were used for EC, whereas no clear correlation existed between current density and removal rates for EC with SS electrodes the treatment efficiency could only be improved when the applied current density was in the range of 33-65 mA/cm². It was established that EC with SS electrodes was superior in terms of decolorization kinetics (99-100% color removal after 10-15 min EC at all studied current densities), whereas EC with Al electrodes was more beneficial for COD removal in terms of electrical energy consumption (5 kWh/m³ wastewater for EC with Al electrodes instead of 9 kWh/m³ wastewater for EC with SS electrodes).

Original language	English
Pages (from-to)	166-173
Number of pages	8
Journal	Journal of Hazardous Materials
Volume	150
Issue number	1
DOIs	https://doi.org/10.1016/j.jhazmat.2007.09.032
Publication status	Published - 15 Jan 2008

Funding

The authors thank Dr. Izzet Alaton for supplying the wastewater. Idil Arslan-Alaton acknowledges the Turkish Academy of Sciences (TUBA) for their financial support under the TUBA-GEBIP grant.

Funders
TUBA
TUBA-GEBIP
Türkiye Bilimler Akademisi

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation

Keywords

Aluminum and stainless steel electrodes
COD abatement
Current density
Decolorization
Electrical energy requirements
Electrocoagulation
Reactive dyebath effluent

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10.1016/j.jhazmat.2007.09.032

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title = "Electrocoagulation of a real reactive dyebath effluent using aluminum and stainless steel electrodes",

abstract = "Treatment of real reactive dyebath effluent comprising of an exhausted reactive dyebath and its sequential rinses with electrocoagulation (EC) using aluminum (Al) and stainless steel (SS) electrodes was investigated. The experimental study focused on the effect of applied current density (22-87 mA/cm2; at an initial, optimum pH of 5.5) on decolorization and COD removal rates using Al and SS as electrode materials. Results have indicated that the treatment efficiency was enhanced appreciably by increasing the applied current density when Al electrodes were used for EC, whereas no clear correlation existed between current density and removal rates for EC with SS electrodes the treatment efficiency could only be improved when the applied current density was in the range of 33-65 mA/cm2. It was established that EC with SS electrodes was superior in terms of decolorization kinetics (99-100\% color removal after 10-15 min EC at all studied current densities), whereas EC with Al electrodes was more beneficial for COD removal in terms of electrical energy consumption (5 kWh/m3 wastewater for EC with Al electrodes instead of 9 kWh/m3 wastewater for EC with SS electrodes).",

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AU - Arslan-Alaton, Idil

AU - Kabdaşli, Işik

AU - Hanbaba, Deniz

AU - Kuybu, Elif

PY - 2008/1/15

Y1 - 2008/1/15

N2 - Treatment of real reactive dyebath effluent comprising of an exhausted reactive dyebath and its sequential rinses with electrocoagulation (EC) using aluminum (Al) and stainless steel (SS) electrodes was investigated. The experimental study focused on the effect of applied current density (22-87 mA/cm2; at an initial, optimum pH of 5.5) on decolorization and COD removal rates using Al and SS as electrode materials. Results have indicated that the treatment efficiency was enhanced appreciably by increasing the applied current density when Al electrodes were used for EC, whereas no clear correlation existed between current density and removal rates for EC with SS electrodes the treatment efficiency could only be improved when the applied current density was in the range of 33-65 mA/cm2. It was established that EC with SS electrodes was superior in terms of decolorization kinetics (99-100% color removal after 10-15 min EC at all studied current densities), whereas EC with Al electrodes was more beneficial for COD removal in terms of electrical energy consumption (5 kWh/m3 wastewater for EC with Al electrodes instead of 9 kWh/m3 wastewater for EC with SS electrodes).

AB - Treatment of real reactive dyebath effluent comprising of an exhausted reactive dyebath and its sequential rinses with electrocoagulation (EC) using aluminum (Al) and stainless steel (SS) electrodes was investigated. The experimental study focused on the effect of applied current density (22-87 mA/cm2; at an initial, optimum pH of 5.5) on decolorization and COD removal rates using Al and SS as electrode materials. Results have indicated that the treatment efficiency was enhanced appreciably by increasing the applied current density when Al electrodes were used for EC, whereas no clear correlation existed between current density and removal rates for EC with SS electrodes the treatment efficiency could only be improved when the applied current density was in the range of 33-65 mA/cm2. It was established that EC with SS electrodes was superior in terms of decolorization kinetics (99-100% color removal after 10-15 min EC at all studied current densities), whereas EC with Al electrodes was more beneficial for COD removal in terms of electrical energy consumption (5 kWh/m3 wastewater for EC with Al electrodes instead of 9 kWh/m3 wastewater for EC with SS electrodes).

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KW - Current density

KW - Decolorization

KW - Electrical energy requirements

KW - Electrocoagulation

KW - Reactive dyebath effluent

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Electrocoagulation of a real reactive dyebath effluent using aluminum and stainless steel electrodes

Abstract

Funding

UN SDGs

Keywords

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