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Effect of Electrolysis on Activated Sludge during the Hydrolysis and Acidogenesis Stages in the Anaerobic Digestion of Poultry Manure

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  • Yelizaveta Chernysh

    (International Innovation and Applied Center “Aquatic Artery”, Sumy State University, 2 Rymskogo-Korsakova Street, 40007 Sumy, Ukraine
    Department of Sustainable Technologies, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic
    T.G. Masaryk Water Research Institute, Podbabská 2582/30, 16000 Prague, Czech Republic)

  • Magdalena Balintova

    (International Innovation and Applied Center “Aquatic Artery”, Sumy State University, 2 Rymskogo-Korsakova Street, 40007 Sumy, Ukraine
    Institute of Environmental Engineering, Faculty of Civil Engineering, Technical University of Kosice, Vysokoskolska 4, 04200 Kosice, Slovakia)

  • Vladimir Shtepa

    (International Innovation and Applied Center “Aquatic Artery”, Sumy State University, 2 Rymskogo-Korsakova Street, 40007 Sumy, Ukraine)

  • Viktoriia Chubur

    (International Innovation and Applied Center “Aquatic Artery”, Sumy State University, 2 Rymskogo-Korsakova Street, 40007 Sumy, Ukraine
    Department of Sustainable Technologies, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic)

  • Natalia Junakova

    (Institute of Environmental Engineering, Faculty of Civil Engineering, Technical University of Kosice, Vysokoskolska 4, 04200 Kosice, Slovakia)

Abstract

This paper focuses on the study of the effect of electrolysis on activated sludge in a microbial electrolysis cell (MEC) under the anaerobic digestion of poultry manure. This study was conducted using a bioreactor design with and without electrodes (conventional condition). Measurements of pH, redox potential (ORP), and total dissolved solids were carried out, as was the microscopy of activated sludge during treatment and gasometry. There was an increase in the yields of CH 4 and CO 2 compared to conventional conditions. Thus, on the 14th day, there was an increase in the CH 4 yield to 35.1% compared with the conventional conditions—31.6%—as well as in the CO 2 yield to 53.5% compared with the cell without electrodes—37.7%. Visually, the microscopy of anaerobic activated sludge showed changes in the aggregation process itself, with the formation of cells of clusters of microorganism colonies with branches of a delineated shape. ORP fluctuations were related to the process of the dissociation into ions during the passage of an electric current through the electrodes, and were observed before and after the inclusion of a current into the system. A model of the effect of electrolysis during anaerobic digestion was developed, taking into account the influencing factors on the condition of the activated sludge.

Suggested Citation

  • Yelizaveta Chernysh & Magdalena Balintova & Vladimir Shtepa & Viktoriia Chubur & Natalia Junakova, 2022. "Effect of Electrolysis on Activated Sludge during the Hydrolysis and Acidogenesis Stages in the Anaerobic Digestion of Poultry Manure," Sustainability, MDPI, vol. 14(11), pages 1-16, June.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:11:p:6826-:d:830572
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    References listed on IDEAS

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    1. Gan Chin Heng & Mohamed Hasnain Isa & Serene Sow Mun Lock & Choon Aun Ng, 2021. "Process Optimization of Waste Activated Sludge in Anaerobic Digestion and Biogas Production by Electrochemical Pre-Treatment Using Ruthenium Oxide Coated Titanium Electrodes," Sustainability, MDPI, vol. 13(9), pages 1-13, April.
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