Effect of Particulate Disintegration on Biomethane Potential of Particle-Rich Substrates in Batch Anaerobic Reactor
An investigation of particle disintegration was carried out using batch anaerobic reactors and a particle-rich substrate from pig manure supernatant. Two types of samples were applied, one high in suspended particles (raw feed) and another low in suspended particle content (centrifuged feed). Both f...
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| Format: | Article |
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MDPI AG
2019-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/14/2880 |
| _version_ | 1811297416854372352 |
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| author | Fasil Ayelegn Tassew Wenche Hennie Bergland Carlos Dinamarca Rune Bakke |
| author_facet | Fasil Ayelegn Tassew Wenche Hennie Bergland Carlos Dinamarca Rune Bakke |
| author_sort | Fasil Ayelegn Tassew |
| collection | DOAJ |
| description | An investigation of particle disintegration was carried out using batch anaerobic reactors and a particle-rich substrate from pig manure supernatant. Two types of samples were applied, one high in suspended particles (raw feed) and another low in suspended particle content (centrifuged feed). Both feeds were digested with and without cellulase enzyme addition to obtain a better understanding of particle degradation mechanisms. An automatic methane potential test system (AMPTS) was used to carry out batch reactions at 35 °C. The raw feed with high-suspended solids had higher biomethane potential than the centrifuged feed but the conversion rate and methane yield was lower. The addition of cellulase increased biomethane production rates in both high- and low-particle content samples enhancing yield by 54% and 40%, respectively and converting 69% and 87% of feed chemical oxygen demand (COD), respectively. This implies that the feed particles have high contents of cellulose. This is also the case for the smaller particles remaining after centrifugation. Comparisons of anaerobic digestion model no. 1 (ADM1) simulations with experimental data reveal that classifying substrate particles into a fast and a slow degrading fraction with separate disintegration kinetics fit the experimental data better than lumping all particles into one parameter. |
| first_indexed | 2024-04-13T06:03:59Z |
| format | Article |
| id | doaj.art-1eb7db3a196f4f0cb682caa6cfcf9220 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-13T06:03:59Z |
| publishDate | 2019-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-1eb7db3a196f4f0cb682caa6cfcf92202022-12-22T02:59:19ZengMDPI AGApplied Sciences2076-34172019-07-01914288010.3390/app9142880app9142880Effect of Particulate Disintegration on Biomethane Potential of Particle-Rich Substrates in Batch Anaerobic ReactorFasil Ayelegn Tassew0Wenche Hennie Bergland1Carlos Dinamarca2Rune Bakke3Department of Process, Energy and Environmental Technology, University of South-Eastern Norway, Kjølnes Ring 56, NO 3918 Porsgrunn, NorwayDepartment of Process, Energy and Environmental Technology, University of South-Eastern Norway, Kjølnes Ring 56, NO 3918 Porsgrunn, NorwayDepartment of Process, Energy and Environmental Technology, University of South-Eastern Norway, Kjølnes Ring 56, NO 3918 Porsgrunn, NorwayDepartment of Process, Energy and Environmental Technology, University of South-Eastern Norway, Kjølnes Ring 56, NO 3918 Porsgrunn, NorwayAn investigation of particle disintegration was carried out using batch anaerobic reactors and a particle-rich substrate from pig manure supernatant. Two types of samples were applied, one high in suspended particles (raw feed) and another low in suspended particle content (centrifuged feed). Both feeds were digested with and without cellulase enzyme addition to obtain a better understanding of particle degradation mechanisms. An automatic methane potential test system (AMPTS) was used to carry out batch reactions at 35 °C. The raw feed with high-suspended solids had higher biomethane potential than the centrifuged feed but the conversion rate and methane yield was lower. The addition of cellulase increased biomethane production rates in both high- and low-particle content samples enhancing yield by 54% and 40%, respectively and converting 69% and 87% of feed chemical oxygen demand (COD), respectively. This implies that the feed particles have high contents of cellulose. This is also the case for the smaller particles remaining after centrifugation. Comparisons of anaerobic digestion model no. 1 (ADM1) simulations with experimental data reveal that classifying substrate particles into a fast and a slow degrading fraction with separate disintegration kinetics fit the experimental data better than lumping all particles into one parameter.https://www.mdpi.com/2076-3417/9/14/2880anaerobic digestionparticle-rich substratesuspended solids disintegrationdisintegration kineticscellulase |
| spellingShingle | Fasil Ayelegn Tassew Wenche Hennie Bergland Carlos Dinamarca Rune Bakke Effect of Particulate Disintegration on Biomethane Potential of Particle-Rich Substrates in Batch Anaerobic Reactor Applied Sciences anaerobic digestion particle-rich substrate suspended solids disintegration disintegration kinetics cellulase |
| title | Effect of Particulate Disintegration on Biomethane Potential of Particle-Rich Substrates in Batch Anaerobic Reactor |
| title_full | Effect of Particulate Disintegration on Biomethane Potential of Particle-Rich Substrates in Batch Anaerobic Reactor |
| title_fullStr | Effect of Particulate Disintegration on Biomethane Potential of Particle-Rich Substrates in Batch Anaerobic Reactor |
| title_full_unstemmed | Effect of Particulate Disintegration on Biomethane Potential of Particle-Rich Substrates in Batch Anaerobic Reactor |
| title_short | Effect of Particulate Disintegration on Biomethane Potential of Particle-Rich Substrates in Batch Anaerobic Reactor |
| title_sort | effect of particulate disintegration on biomethane potential of particle rich substrates in batch anaerobic reactor |
| topic | anaerobic digestion particle-rich substrate suspended solids disintegration disintegration kinetics cellulase |
| url | https://www.mdpi.com/2076-3417/9/14/2880 |
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