TY - JOUR
T1 - Biomethane potential test applied to psychrophilic conditions
T2 - Three issues about inoculum temperature adaptation
AU - Martí-Herrero, Jaime
AU - Castro, Liliana
AU - Jaimes-Estévez, Jaime
AU - Grijalva, Mario
AU - Gualatoña, Monica
AU - Aldás, María Belen
AU - Escalante, Humberto
N1 - Publisher Copyright:
© 2022
PY - 2022/12
Y1 - 2022/12
N2 - This study aimed to give lights for establishing a psychrophilic BMP test by three approaches for inoculum acclimation under 25 °C. The first test was run using stabilized mesophilic (25 °C) and psychrophilic (15 °C) inoculums to digest cellulose. Second was based on temperature acclimatization of inoculum just by time, from 30 to 10 and 20 °C. The third was running a consecutive BMP under psychrophilic temperatures (23 °C). Cellulose psychrophilic BMP using stabilized psychrophilic inoculum achieve similar results to those obtained at mesophilic conditions with stabilized mesophilic inoculum. Time acclimatization of inoculum improve BMP results respect non-adapted (from 0.47 to 055 Nm3 CH4 kg−1 SV at 20 °C, from 0.31 to 0.44 Nm3 CH4 kg−1 SV at 10 °C). Consecutive BMP under psychrophilic conditions shows better results for inoculum acclimatization to run assays at low temperatures. There is a need to develop and standardize a procedure to run psychrophilic BMP.
AB - This study aimed to give lights for establishing a psychrophilic BMP test by three approaches for inoculum acclimation under 25 °C. The first test was run using stabilized mesophilic (25 °C) and psychrophilic (15 °C) inoculums to digest cellulose. Second was based on temperature acclimatization of inoculum just by time, from 30 to 10 and 20 °C. The third was running a consecutive BMP under psychrophilic temperatures (23 °C). Cellulose psychrophilic BMP using stabilized psychrophilic inoculum achieve similar results to those obtained at mesophilic conditions with stabilized mesophilic inoculum. Time acclimatization of inoculum improve BMP results respect non-adapted (from 0.47 to 055 Nm3 CH4 kg−1 SV at 20 °C, from 0.31 to 0.44 Nm3 CH4 kg−1 SV at 10 °C). Consecutive BMP under psychrophilic conditions shows better results for inoculum acclimatization to run assays at low temperatures. There is a need to develop and standardize a procedure to run psychrophilic BMP.
KW - Adapted inoculums
KW - BMP test
KW - Psychrophilic anaerobic digestion
KW - Temperature shock
UR - http://www.scopus.com/inward/record.url?scp=85141794857&partnerID=8YFLogxK
U2 - 10.1016/j.biteb.2022.101279
DO - 10.1016/j.biteb.2022.101279
M3 - Artículo
AN - SCOPUS:85141794857
SN - 2589-014X
VL - 20
JO - Bioresource Technology Reports
JF - Bioresource Technology Reports
M1 - 101279
ER -
