Electrochemical treatment of paper mill wastewater using three-dimensional electrodes with Ti/Co/SnO2-Sb2O5 anode

Wang, Bo; Kong, Wuping; Ma, Hongwen

doi:10.1016/j.jhazmat.2006.12.031

Cited by 136 publications

(54 citation statements)

References 19 publications

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“…The catalytic action of sodium chloride has been attributed to the participation of electro generated hypochlorite in the oxidation of organics near to the anode or/and in the bulk of the electrolyte 20 . This reaction mechanism was well explained in literature 2,11,20 . Increasing the sodium chloride concentration not only decreases the average cell voltage between the anode and the cathode, but also the energy consumption per kg of COD removal of the effluent decreases.…”

supporting

confidence: 74%

“…The term pollution implies the introduction of extraneous matter into the environment, either directly or indirectly which can occur in the solid, liquid, or gaseous forms. This pollution leads to several hazards of the entire eco system 1,2 . The pulp and paper mills are, in general, regarded as heavy pollutants of water because of a large use of chemicals.…”

Section: Introductionmentioning

confidence: 99%

“…These are conventional treatment methods, and may not be economically viable for small and medium scale pulp and paper industries. The conventional trickling filter or activated sludge process is not only costly to install but also difficult to maintain and operate at the desired level of efficiency [2][3][4] . A review of the previous work have been undertaken in order to achieve a systematic and proper procedure for accomplishing the aim of this investigation.…”

Section: Introductionmentioning

confidence: 99%

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COD reduction studies of paper mill effluent using a batch recirculation electrochemical method

Kannadasan¹,

Sivakumar

Basha

et al. 2011

Polish Journal of Chemical Technology

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The conventional method of treating pulp and paper mill effluent involves the biological oxidation by bacterial action of aerobic and anaerobic conditions and aerobic lagooning method, which are less efficiency of removing COD. To overcome the drawbacks of the existing treatment process, in the present work an attempt has been made to study the electro oxidative destruction of the pulp and paper mill effluent using an electrochemical method and the effect of various parameters such as concentration of supporting electrolytes, current densities, flow rates of electrolyte and reservoir volumes of the effluent were conducted. From the experimental results it is observed that the rate of reduction of COD of the effluent increased with an increase in the supporting electrolyte (sodium chloride) concentration, current density where as it decreased with increase in the reservoir volume and the flow rate of electrolyte. The residence time distributions studies have also been conducted to study the behavior of the electrochemical reactor.

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supporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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COD reduction studies of paper mill effluent using a batch recirculation electrochemical method

Kannadasan¹,

Sivakumar

Basha

et al. 2011

Polish Journal of Chemical Technology

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“…Papering processes utilize large amounts of water, which reappear in the form of an effluent [4]. This kind of paper mill wastewater, containing many toxic and intensely colored, mainly organic substances, is characterized by a high level of chemical oxygen demand (COD) [5].…”

Section: Introductionmentioning

confidence: 99%

“…The method of electrochemical oxidation for treatment of the organic contaminants contained in wastewater has become a hot focus in recent years because of its convenience and effectiveness than traditional methods [5].…”

Section: Introductionmentioning

confidence: 99%

Treatment of Tissue Paper Wastewater: Application of Electro-Fenton Method

Ün¹,

Topal²,

Oduncu³

et al. 2015

IJESD

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Abstract-The Fenton process is one of the most powerful advanced electrochemical processes based on the production of hydroxyl radicals (OH . ) as a result of the reaction of hydrogen peroxide (H 2 O 2 ) with catalyst ferrous ions (Fe 2+ ) under acidic conditions. In this study, tissue paper wastewater with the initial COD concentration of 1200 mg/L was treated using Electro-Fenton method. The cylindrical iron electrochemical reactor was used as a cathode. The turbine impeller with 8 flat blades were used as an anode. The effects of initial pH, current density and concentration of H 2 O 2 on COD removal efficiency were determined. The removal efficiency of 80 % were obtained after 60 minutes of electro-fenton process at the current density of 20 mA/cm 2 with the addition of 0.1M H 2 O 2. Additionally, the electrical energy consumptions were also evaluated. It can be concluded from the study that reactor designed dissimilar from those in the literature, can be used successfully for COD removal from the tissue paper industry wastewater.Index Terms-Tissue paper wastewater, electro-fenton, wastewater treatment, COD.

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Environmental Remediation with Electrochemical Technologies

Chen

Rajić

Zhao

et al. 2018

Kirk-Othmer Encyclopedia of Chemical Technology

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Significant concerns continue to be raised over environmental pollution of soils and water resources. Chemical fate and transport coupled with redox manipulation are the primary processes that have been considered for removing contamination and minimizing exposure. Electrochemical processes utilize electron transfer to drive transport of chemicals and redox manipulation for treatment of contaminated media. Electrokinetic remediation relies on the electric field to transport contaminants in low permeability soils toward the electrode vicinity for removal. In water cleanup, both electroreduction and electrooxidation have been used. Electroreduction has been used for dechlorination and defluorination of halogenated calcitrant compounds. Electrooxidation has also gained significant potential for transformation of many legacy and emerging contaminants. For example, organic contaminants could be oxidized directly on anode surface (direct anodic oxidation), by electrochemically generated hydroxyl radicals or by other electrochemically generated oxidants (indirect anodic oxidation). In this article, we present an overview of the state‐of‐the‐art electrochemical processes for treatment of contaminated soil and water. We also describe a perspective for future research directions in the field of electrochemical treatment of contaminated media.

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Electrochemical treatment of paper mill wastewater using three-dimensional electrodes with Ti/Co/SnO2-Sb2O5 anode

Cited by 136 publications

References 19 publications

COD reduction studies of paper mill effluent using a batch recirculation electrochemical method

COD reduction studies of paper mill effluent using a batch recirculation electrochemical method

Treatment of Tissue Paper Wastewater: Application of Electro-Fenton Method

Environmental Remediation with Electrochemical Technologies

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