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Stabilization of thermophilic and mesophilic anaerobic digestion of sugar beet by-products and co-digestion with cow manure in semi-continuous stirred tank reactors
| Content Provider | Semantic Scholar |
|---|---|
| Author | Gómez-Quiroga, Xiomara Aboudi, Kaoutar Álvarez-Gallego, Carlos José Romero-García, Luis Isidoro |
| Copyright Year | 2017 |
| Abstract | The aim of this study was to compare the single digestion of sugar beet by-products with the co-digestion of this waste using cow manure as co-substrate. The semi-continuous anaerobic processes were carried out working at a hydraulic retention time of 30 days and an 8% of total solids concentration in the feeding. The average methane yields reached in the single digestion tests were 30 mL CH4/gVS added in mesophilic reactor (35oC) and 110 mL CH4/gVSadded for the thermophilic (55oC) one. However, co-digestion with cow manure leads to an increase in the average methane yield for both temperatures. Indeed, 178.6 mL CH4/gVS added for mesophilic and 182.44 mL CH4/gVSadded for thermophilic process were obtained when co-digestion was applied. The low methane yields obtained for single digestion of SBB were accompanied by the accumulation of volatile fatty acids in the system. In fact, acetic acid was the most extensively accumulated volatile fatty acid throughout the process and, hence, an inhibition of the acetoclastic methanogenic archaea population must be occurring. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://uest.ntua.gr/athens2017/proceedings/pdfs/Athens2017_Quiroga_Aboudi_Gallego_Garcia.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
