African Journal of
Environmental Science and Technology

  • Abbreviation: Afr. J. Environ. Sci. Technol.
  • Language: English
  • ISSN: 1996-0786
  • DOI: 10.5897/AJEST
  • Start Year: 2007
  • Published Articles: 886

Full Length Research Paper

Pig faeces digestion as compared to anaerobic co-digestion using waste waters sludge or bovine ruminal gastric content treatments

Jose Ramon Laines Canepa
  • Jose Ramon Laines Canepa
  • División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Cárdenas km 0.5 entronque con Bosques de Saloya, 86150, Centro, Tabasco, México.
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Shayla Montejo Olan
  • Shayla Montejo Olan
  • División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Cárdenas km 0.5 entronque con Bosques de Saloya, 86150, Centro, Tabasco, México.
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Jose Aurelio Sosa Olivier
  • Jose Aurelio Sosa Olivier
  • División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Cárdenas km 0.5 entronque con Bosques de Saloya, 86150, Centro, Tabasco, México.
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Israel Avila Lazaro
  • Israel Avila Lazaro
  • División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Cárdenas km 0.5 entronque con Bosques de Saloya, 86150, Centro, Tabasco, México.
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Gabriel Nunez Nogueira
  • Gabriel Nunez Nogueira
  • División Académica de Ciencias Biológicas, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Cárdenas km 0.5 entronque con Bosques de Saloya, 86150, Centro, Tabasco, México.
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  •  Received: 03 June 2017
  •  Accepted: 17 August 2017
  •  Published: 31 October 2017

Abstract

Anaerobic co-digestion improves the pig faeces digestion process. This work presents anaerobic digestion of pig faeces (C) as compared to 2 co-substrates: Sludge (L) from waste waters and bovine ruminal gastric content (R). Pig faeces used were generated in a local farm at the Juarez Autonomous University of Tabasco (UJAT), with a total population of 148 animals. Analytical determinations were made on the substrate and co-substrates. Each treatment was performed in triplicate (9 experimental units), for 18 weeks. C+R co-digestion had the highest removal of chemical oxygen demand (COD) with 90%. Biogas production (0.012 L day-1) was quantified for C and C+R, with concentrations of 70.87±8.65 and 71.89 ± 7.60% of methane (CH4), respectively. For C+L, it was 0.009 L day-1, with 77.89±6.74% of CH4. Results obtained showed that co-digestion of C+L was better with regards to the quality of biogas from low hydrogen sulfide (H2S) concentrations (70.33±6.36 ppm). The use of anaerobic co-digestion systems represents an alternative treatment for faeces generated in pig farms and other kinds of wastes to reduce the potential source of infection produced by these types of waste.

 

Key words: Biogas, digester, manure, pig faeces, rumen.