Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/196
Title: Electrocoagulation of Disperse Dyebath Wastewater: Optimization of Process Variables and Sludge Production
Authors: Aygün, Ahmet
Nas, Bilgehan
Sevimli, Mehmet Faik
Keywords: Auxiliary Chemicals
Decolorization
Disperse Dye
Electrocoagulation
Optimization
Operating Cost
Reactive Dyes
Textile Dyes
Azo-Dye
Removal
Decolorization
Coagulation
Effluent
Technologies
Treatability
Issue Date: 2021
Publisher: KOREAN ELECTROCHEMISTRY SOC
Abstract: This study was conducted to investigate the effect of initial pH, current density, and electrolysis time on process performance in terms of decolorization and chemical oxygen demand (COD) removal from disperse dyebath wastewater (DDW) by mono-polar parallel laboratory scale electrocoagulation (EC) process. COD reduction of 51.3% and decolorization of 92.8% were obtained with operating cost of 0.19 is an element of/m(3) treated wastewater for Al-Al electrode pair, while 90.5% of decolorization and 49.2% of COD reduction were obtained with operating cost of 0.20 is an element of/m(3) treated wastewater for an Fe-Fe electrode pair. The amount of sludge production were highly related to type of the electrode materials. At the optimum conditions, the amount of sludge produced were 0.18 kg/m(3) and 0.28 kg/m(3) for Al-Al and Fe-Fe electrode pairs, respectively. High decolorization can be explained by the hydrophobic nature of the disperse dye, while limited COD removal was observed due to the high dissolved organic matter of the DDW based on auxiliary chemicals. Energy, electrode, and chemical consumptions and sludge handling were considered as major cost items to find a cost-effective and sustainable solution for EC. The contribution of each cost items on operating cost were determined as 10.0%, 51.1%, 30.5% and 8.4% for Al-Al, and they were also determined as 9.0%, 38.0%, 40.5% and 12.5% for Fe-Fe, respectively. COD reduction and decolorization were fitted to first-order kinetic rule.
URI: https://doi.org/10.33961/jecst.2020.00787
https://hdl.handle.net/20.500.13091/196
ISSN: 2093-8551
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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