Evaluating biochemical methane production from brewer’s spent yeast

Ornella Sosa-Hernández, Prathap Parameswaran, Gibrán Sidney Alemán-Nava, Cesar Torres, Roberto Parra-Saldívar

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Anaerobic digestion treatment of brewer’s spent yeast (SY) is a viable option for bioenergy capture. The biochemical methane potential (BMP) assay was performed with three different samples (SY1, SY2, and SY3) and SY1 dilutions (75, 50, and 25 % on a v/v basis). Gompertz-equation parameters denoted slow degradability of SY1 with methane production rates of 14.59–4.63 mL/day and lag phases of 10.72–19.7 days. Performance and kinetic parameters were obtained with the Gompertz equation and the first-order hydrolysis model with SY2 and SY3 diluted 25 % and SY1 50 %. A SY2 25 % gave a 17 % of TCOD conversion to methane as well as shorter lag phase (−1, and SY2 25 % was more appropriate for faster methane production. Methane capture and biogas composition were dependent upon the SY source, and co-digestion (or dilution) can be advantageous.

Original languageEnglish (US)
Pages (from-to)1-10
Number of pages10
JournalJournal of Industrial Microbiology and Biotechnology
DOIs
StateAccepted/In press - Jun 8 2016

Fingerprint

Methane
Yeast
Saccharomyces cerevisiae
Dilution
Digestion
Anaerobic digestion
Biofuels
Biogas
Kinetic parameters
Hydrolysis
Assays
Yeasts
Chemical analysis

Keywords

  • Anaerobic digestion
  • Biochemical methane potential (BMP)
  • Brewer’s spent yeast

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology

Cite this

Evaluating biochemical methane production from brewer’s spent yeast. / Sosa-Hernández, Ornella; Parameswaran, Prathap; Alemán-Nava, Gibrán Sidney; Torres, Cesar; Parra-Saldívar, Roberto.

In: Journal of Industrial Microbiology and Biotechnology, 08.06.2016, p. 1-10.

Research output: Contribution to journalArticle

Sosa-Hernández, Ornella ; Parameswaran, Prathap ; Alemán-Nava, Gibrán Sidney ; Torres, Cesar ; Parra-Saldívar, Roberto. / Evaluating biochemical methane production from brewer’s spent yeast. In: Journal of Industrial Microbiology and Biotechnology. 2016 ; pp. 1-10.
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