Influence of the ultrasound pretreatment on anaerobic digestion of cattle manure, food waste and crude glycerine

  • Pedro Ormaechea /
  • Leonor Castrillón /
  • Elena Marañón /
  • Yolanda Fernández-Nava /
  • Luis Negral /
  • Laura Megido
Journal ar
Environmental Technology (United Kingdom)
  • Volumen: 38
  • Número: 6
  • Fecha: 19 marzo 2017
  • Páginas: 682-686
  • ISSN: 1479487X 09593330
  • Tipo de fuente: Revista
  • DOI: 10.1080/09593330.2016.1208278
  • Tipo de documento: Artículo
  • Editorial: Taylor and Francis Ltd.
© 2016 Informa UK Limited, trading as Taylor & Francis Group. To increase the production of methane, when cattle manure (CM) is digested, pretreatments can be applied and/or the manure can be co-digested with other wastes. In this research work, a mixture of CM, food waste (FW) and raw glycerine (Gly) in a proportion in weight of 87% CM, 10% FW and 3% Gly was digested, (a) without pretreatment and (b) with pretreatment by ultrasound, applying a sonication energy of 1040 kJ/kg total solids. Specific methane production was 290 L CH4/kg volatile solids (VS) without pretreatment and 520 L CH4/kg VS with pretreatment. With respect to the volumetric methane production, 1.07 L CH4/ was produced in the first case, and in the second case, 1.98 L CH4/ We can conclude that the application of ultrasound pretreatment significantly improved the production of biogas.

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