TY - JOUR
T1 - Evaluating biochemical methane production from brewer’s spent yeast
AU - Sosa-Hernández, Ornella
AU - Parameswaran, Prathap
AU - Alemán-Nava, Gibrán Sidney
AU - Torres, Cesar
AU - Parra-Saldívar, Roberto
N1 - Publisher Copyright:
© 2016, Society for Industrial Microbiology and Biotechnology.
PY - 2016/9/1
Y1 - 2016/9/1
N2 - 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 day). Average estimated hydrolysis constant for SY was 0.0141 (±0.003) day−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.
AB - 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 day). Average estimated hydrolysis constant for SY was 0.0141 (±0.003) day−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.
KW - Anaerobic digestion
KW - Biochemical methane potential (BMP)
KW - Brewer’s spent yeast
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U2 - 10.1007/s10295-016-1792-0
DO - 10.1007/s10295-016-1792-0
M3 - Article
C2 - 27276935
AN - SCOPUS:84976274371
SN - 1367-5435
VL - 43
SP - 1195
EP - 1204
JO - Journal of Industrial Microbiology and Biotechnology
JF - Journal of Industrial Microbiology and Biotechnology
IS - 9
ER -