Impact of Storage Conditions on the Methanogenic Activity of Anaerobic Digestion Inocula
The impact of storage temperature (4, 22 and 37 °C) and storage time (7, 14 and 21 days) on anaerobic digestion inocula was investigated through specific methanogenic activity assays. Experimental results showed that methanogenic activity decreased over time with storage, regardless of storage tempe...
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doaj-4551b945464147148f62cb30b72f37a12020-11-25T02:05:21ZengMDPI AGWater2073-44412020-05-01121321132110.3390/w12051321Impact of Storage Conditions on the Methanogenic Activity of Anaerobic Digestion InoculaSergi Astals0Konrad Koch1Sören Weinrich2Sasha D. Hafner3Stephan Tait4Miriam Peces5Department of Chemical Engineering and Analytical Chemistry, University of Barcelona, 08028 Barcelona, SpainChair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, 85748 Garching, GermanyBiochemical Conversion Department, Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, GermanyHafner Consulting LLC, Reston, VA 20191, USAAdvanced Water Management Centre, The University of Queensland, Brisbane, QLD 4072, AustraliaAdvanced Water Management Centre, The University of Queensland, Brisbane, QLD 4072, AustraliaThe impact of storage temperature (4, 22 and 37 °C) and storage time (7, 14 and 21 days) on anaerobic digestion inocula was investigated through specific methanogenic activity assays. Experimental results showed that methanogenic activity decreased over time with storage, regardless of storage temperature. However, the rate at which the methanogenic activity decreased was two and five times slower at 4 °C than at 22 and 37 °C, respectively. The inoculum stored at 4 °C and room temperature (22 °C) maintained methanogenic activity close to that of fresh inoculum for 14 days (<10% difference). However, a storage temperature of 4 °C is preferred because of the slower decrease in activity with lengthier storage time. From this research, it was concluded that inoculum storage time should generally be kept to a minimum, but that storage at 4 °C could help maintain methanogenic activity for longer.https://www.mdpi.com/2073-4441/12/5/1321anaerobic digestionbiogasinoculumsample storagemethanogenesisspecific methanogenic activity (SMA) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sergi Astals Konrad Koch Sören Weinrich Sasha D. Hafner Stephan Tait Miriam Peces |
spellingShingle |
Sergi Astals Konrad Koch Sören Weinrich Sasha D. Hafner Stephan Tait Miriam Peces Impact of Storage Conditions on the Methanogenic Activity of Anaerobic Digestion Inocula Water anaerobic digestion biogas inoculum sample storage methanogenesis specific methanogenic activity (SMA) |
author_facet |
Sergi Astals Konrad Koch Sören Weinrich Sasha D. Hafner Stephan Tait Miriam Peces |
author_sort |
Sergi Astals |
title |
Impact of Storage Conditions on the Methanogenic Activity of Anaerobic Digestion Inocula |
title_short |
Impact of Storage Conditions on the Methanogenic Activity of Anaerobic Digestion Inocula |
title_full |
Impact of Storage Conditions on the Methanogenic Activity of Anaerobic Digestion Inocula |
title_fullStr |
Impact of Storage Conditions on the Methanogenic Activity of Anaerobic Digestion Inocula |
title_full_unstemmed |
Impact of Storage Conditions on the Methanogenic Activity of Anaerobic Digestion Inocula |
title_sort |
impact of storage conditions on the methanogenic activity of anaerobic digestion inocula |
publisher |
MDPI AG |
series |
Water |
issn |
2073-4441 |
publishDate |
2020-05-01 |
description |
The impact of storage temperature (4, 22 and 37 °C) and storage time (7, 14 and 21 days) on anaerobic digestion inocula was investigated through specific methanogenic activity assays. Experimental results showed that methanogenic activity decreased over time with storage, regardless of storage temperature. However, the rate at which the methanogenic activity decreased was two and five times slower at 4 °C than at 22 and 37 °C, respectively. The inoculum stored at 4 °C and room temperature (22 °C) maintained methanogenic activity close to that of fresh inoculum for 14 days (<10% difference). However, a storage temperature of 4 °C is preferred because of the slower decrease in activity with lengthier storage time. From this research, it was concluded that inoculum storage time should generally be kept to a minimum, but that storage at 4 °C could help maintain methanogenic activity for longer. |
topic |
anaerobic digestion biogas inoculum sample storage methanogenesis specific methanogenic activity (SMA) |
url |
https://www.mdpi.com/2073-4441/12/5/1321 |
work_keys_str_mv |
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