Treatment of phthalic acid esters by electrocoagulation with stainless steel electrodes using dimethyl phthalate as a model compound

Işik Kabdaşli; Asuman Keleş; Tuǧba Ölmez-Hanci; Olcay Tünay; Idil Arslan-Alaton

doi:10.1016/j.jhazmat.2009.06.093

Treatment of phthalic acid esters by electrocoagulation with stainless steel electrodes using dimethyl phthalate as a model compound

Işik Kabdaşli^*, Asuman Keleş, Tuǧba Ölmez-Hanci, Olcay Tünay, Idil Arslan-Alaton

^*Corresponding author for this work

Department of Environmental Engineering

Istanbul Technical University

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

48 Citations (Scopus)

Abstract

In this study, treatment of phthalates by electrocoagulation employing stainless steel electrodes was investigated using dimethyl phthalate (DMP) as a model compound. DMP was completely destructed within 30 min up to the high initial concentration of 100 mg/L while total mineralization was also obtained within a couple of hours. The applied current density of 22.5 mA/cm² and electrolyte (NaCl) concentrations varying between 1000 and 1500 mg/L as chloride resulted in the highest treatment performance. The initial solution pH (2-6) had practically no effect on the process efficiency. Desorption experiments and the reaction rates obtained for DMP, COD and TOC abatements appeared to be a strong evidence of an oxidative removal mechanism. DMP removal fitted first order kinetics. COD and TOC removals began after the total DMP removal and also fitted first order kinetics. Activated sludge inhibition experiments revealed that toxicity could be significantly reduced by electrocoagulation application.

Original language	English
Pages (from-to)	932-940
Number of pages	9
Journal	Journal of Hazardous Materials
Volume	171
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jhazmat.2009.06.093
Publication status	Published - 15 Nov 2009

Keywords

Activated sludge inhibition
Dimethyl phthalate
Electrocoagulation
Endocrine disrupting compound
Reaction kinetics
Specific energy consumption
Stainless steel electrodes

UN SDGs

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

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10.1016/j.jhazmat.2009.06.093

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title = "Treatment of phthalic acid esters by electrocoagulation with stainless steel electrodes using dimethyl phthalate as a model compound",

abstract = "In this study, treatment of phthalates by electrocoagulation employing stainless steel electrodes was investigated using dimethyl phthalate (DMP) as a model compound. DMP was completely destructed within 30 min up to the high initial concentration of 100 mg/L while total mineralization was also obtained within a couple of hours. The applied current density of 22.5 mA/cm2 and electrolyte (NaCl) concentrations varying between 1000 and 1500 mg/L as chloride resulted in the highest treatment performance. The initial solution pH (2-6) had practically no effect on the process efficiency. Desorption experiments and the reaction rates obtained for DMP, COD and TOC abatements appeared to be a strong evidence of an oxidative removal mechanism. DMP removal fitted first order kinetics. COD and TOC removals began after the total DMP removal and also fitted first order kinetics. Activated sludge inhibition experiments revealed that toxicity could be significantly reduced by electrocoagulation application.",

keywords = "Activated sludge inhibition, Dimethyl phthalate, Electrocoagulation, Endocrine disrupting compound, Reaction kinetics, Specific energy consumption, Stainless steel electrodes",

author = "I{\c s}ik Kabda{\c s}li and Asuman Kele{\c s} and Tuǧba {\"O}lmez-Hanci and Olcay T{\"u}nay and Idil Arslan-Alaton",

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T1 - Treatment of phthalic acid esters by electrocoagulation with stainless steel electrodes using dimethyl phthalate as a model compound

AU - Kabdaşli, Işik

AU - Keleş, Asuman

AU - Ölmez-Hanci, Tuǧba

AU - Tünay, Olcay

AU - Arslan-Alaton, Idil

PY - 2009/11/15

Y1 - 2009/11/15

N2 - In this study, treatment of phthalates by electrocoagulation employing stainless steel electrodes was investigated using dimethyl phthalate (DMP) as a model compound. DMP was completely destructed within 30 min up to the high initial concentration of 100 mg/L while total mineralization was also obtained within a couple of hours. The applied current density of 22.5 mA/cm2 and electrolyte (NaCl) concentrations varying between 1000 and 1500 mg/L as chloride resulted in the highest treatment performance. The initial solution pH (2-6) had practically no effect on the process efficiency. Desorption experiments and the reaction rates obtained for DMP, COD and TOC abatements appeared to be a strong evidence of an oxidative removal mechanism. DMP removal fitted first order kinetics. COD and TOC removals began after the total DMP removal and also fitted first order kinetics. Activated sludge inhibition experiments revealed that toxicity could be significantly reduced by electrocoagulation application.

AB - In this study, treatment of phthalates by electrocoagulation employing stainless steel electrodes was investigated using dimethyl phthalate (DMP) as a model compound. DMP was completely destructed within 30 min up to the high initial concentration of 100 mg/L while total mineralization was also obtained within a couple of hours. The applied current density of 22.5 mA/cm2 and electrolyte (NaCl) concentrations varying between 1000 and 1500 mg/L as chloride resulted in the highest treatment performance. The initial solution pH (2-6) had practically no effect on the process efficiency. Desorption experiments and the reaction rates obtained for DMP, COD and TOC abatements appeared to be a strong evidence of an oxidative removal mechanism. DMP removal fitted first order kinetics. COD and TOC removals began after the total DMP removal and also fitted first order kinetics. Activated sludge inhibition experiments revealed that toxicity could be significantly reduced by electrocoagulation application.

KW - Activated sludge inhibition

KW - Dimethyl phthalate

KW - Electrocoagulation

KW - Endocrine disrupting compound

KW - Reaction kinetics

KW - Specific energy consumption

KW - Stainless steel electrodes

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SN - 0304-3894

VL - 171

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EP - 940

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

IS - 1-3

ER -

Treatment of phthalic acid esters by electrocoagulation with stainless steel electrodes using dimethyl phthalate as a model compound

Abstract

Keywords

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