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Energy valorization of crude glycerol and sanitary sewage in hydrogen generation by biological processes

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  • Additional Information
    • Contributors:
      Universidade Estadual Paulista (UNESP)
    • Publication Information:
      Elsevier BV, 2020.
    • Publication Date:
      2020
    • Abstract:
      Biohydrogen production was studied with increased concentrations of crude glycerol (CG) co-digested with sanitary sewage by anaerobic consortium bacteria in anaerobic batch reactors, at 30 °C and initial pH 7.0. The CG was obtained during the biodiesel production from waste cooking oils (WCO). The anaerobic consortium was from a granular sludge of UASB reactor used in the treatment of poultry wastes heat treated to inhibit methanogenic activity previously. The higher H2 generation was observed with 240.0 g COD L−1 (35.82 mmol L−1), being consumed 63.9% of CG. The co-digestion associated with sanitary sewage facilitated the CG consumption with the increase of organic load, favoring the acetic acid and 1,3-propanediol production in a liquid phase of the reactors. These results are promising, contributing effectively to the treatment of both wastes with concomitant generation of bioenergy.
    • ISSN:
      0360-3199
    • Accession Number:
      10.1016/j.ijhydene.2020.02.168
    • Rights:
      Elsevier TDM
    • Accession Number:
      edsair.doi.dedup.....46a2f04d7cda5fa089753e7b4d63360f