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  • Increasing the bio-electrochemical system performance in azo dye wastewater treatment: reduced electrode spacing for improved hydrodynamics.

    Author(s) : Wang HongChengCui DanYang LiHuiDing YangChengCheng HaoYiWang AiJie

    Author Affiliation : Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.

    Author Email : ajwang@rcees.ac.cn

    Journal article : Bioresource Technology 2017 Vol.245 No.Part A pp.962-969 ref.44

    Abstract : The electrodeselectrodesSubject Category: Techniques, Methodologies and Equipment
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    spacingspacingSubject Category: Properties
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    would exert a pronounced effect on bio-electrochemical systems (BESs) performance, especially for the scaling-up of reactors and practical applications. In this study, we traced the effect of electrode spacing on wastewater treatmentwastewater treatmentSubject Category: Miscellaneous
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    performances from the aspects of hydrodynamics and electrochemical characteristicscharacteristicsSubject Category: Properties
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    . Three series of folded stainless steel mesh (f-SSM) electrodes with electrode spacing of 2, 4 and 8 mm were designed for azo dye (acid orange 7 (AO7)) wastewater treatment. Results showed that BES with electrode spacing of 2 mm (RS2) obtained the highest efficiencies of AO7 decolorizationdecolorizationSubject Category: Techniques, Methodologies and Equipment
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    (90.9±0.4%) and COD removalremovalSubject Category: Miscellaneous
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    (36.8±3.8%) at HRT of 8 h, which was 30.7% and 15.2% higher than that in BES with electrode spacing of 8 mm (RS8), respectively. Moreover, the relationship between pollutantspollutantsSubject Category: Miscellaneous
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    removal, internal resistanceresistanceSubject Category: Properties
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    and hydrodynamics of BESs with different electrode spacing supported the hydrodynamics was significantly influence the pollutants removal performance.

    ISSN : 0960-8524

    DOI : 10.1016/j.biortech.2017.09.036

    Record Number : 20173350588

    Publisher : Elsevier Ltd

    Location of publication : Oxford

    Country of publication : UK

    Language of text : English

    Indexing terms for this abstract:

    Descriptor(s) : azo compoundsazo compoundsSubject Category: Chemicals and Chemical Groups
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    , characteristicscharacteristicsSubject Category: Properties
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    , decolorizationdecolorizationSubject Category: Techniques, Methodologies and Equipment
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    , dyesdyesSubject Category: Chemicals and Chemical Groups
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    , electrodeselectrodesSubject Category: Techniques, Methodologies and Equipment
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    , hydrologyhydrologySubject Category: Miscellaneous
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    , pollutantspollutantsSubject Category: Miscellaneous
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    , pollutionpollutionSubject Category: Miscellaneous
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    , removalremovalSubject Category: Miscellaneous
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    , resistanceresistanceSubject Category: Properties
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    , spacingspacingSubject Category: Properties
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    , waste treatmentwaste treatmentSubject Category: Miscellaneous
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    , wastewaterwastewaterSubject Category: Commodities and Products
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    , wastewater treatmentwastewater treatmentSubject Category: Miscellaneous
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    , water treatmentwater treatmentSubject Category: Techniques, Methodologies and Equipment
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    Identifier(s) : dyestuffs, environmental pollution, waste water, waste water treatment, waste-water treatment