Research output: Contribution to journal › Article
The impact of inocula carryover and inoculum dilution on the methane yields in batch methane potential tests. / Reilly, Matthew; Dinsdale, Richard; Guwy, Alan.
In: BIORESOURCE TECHNOLOGY, Vol. 208, 01.05.2016, p. 134-139.Research output: Contribution to journal › Article
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TY - JOUR
T1 - The impact of inocula carryover and inoculum dilution on the methane yields in batch methane potential tests
AU - Reilly, Matthew
AU - Dinsdale, Richard
AU - Guwy, Alan
PY - 2016/5/1
Y1 - 2016/5/1
N2 - Batch studies are used to benchmark biohydrogen potential (BHP) and biomethane potential (BMP) yields from feed substrates, digestates residues and different process configurations. This study shows that BMP yields using cellulose can be biased positively by not diluting the initial sewage sludge inoculum and the bias is independent of starting inoculum volatile solids (VS) concentration. The carryover of BHP inoculum also increased the BMP yields when using cellulose as a substrate by up to 18.8%. Furthermore it was also observed that the dilution of BMP inoculum with deionised H2O reduced methane yields from cellulose by up to 132 ± 26 N mL-CH4 g-VS-1. Therefore it is proposed that inoculum and standard substrate controls (as used in this study) should be included in methane batch methodologies, particularly when using a pre-fermentation stage such as dark fermentation.
AB - Batch studies are used to benchmark biohydrogen potential (BHP) and biomethane potential (BMP) yields from feed substrates, digestates residues and different process configurations. This study shows that BMP yields using cellulose can be biased positively by not diluting the initial sewage sludge inoculum and the bias is independent of starting inoculum volatile solids (VS) concentration. The carryover of BHP inoculum also increased the BMP yields when using cellulose as a substrate by up to 18.8%. Furthermore it was also observed that the dilution of BMP inoculum with deionised H2O reduced methane yields from cellulose by up to 132 ± 26 N mL-CH4 g-VS-1. Therefore it is proposed that inoculum and standard substrate controls (as used in this study) should be included in methane batch methodologies, particularly when using a pre-fermentation stage such as dark fermentation.
KW - Batch studies
KW - Biohydrogen
KW - Biomethane
KW - Dark fermentation
KW - Two-stage anaerobic digestion
UR - http://www.scopus.com/inward/record.url?scp=84959305969&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2016.02.060
DO - 10.1016/j.biortech.2016.02.060
M3 - Article
C2 - 26938808
AN - SCOPUS:84959305969
VL - 208
SP - 134
EP - 139
JO - BIORESOURCE TECHNOLOGY
JF - BIORESOURCE TECHNOLOGY
SN - 0960-8524
ER -