Insights into Anaerobic Co-Digestion of Lignocellulosic Biomass (Sugar Beet By-Products) and Animal Manure in Long-Term Semi-Continuous Assays
Biogas production through anaerobic digestion has proven to be one of the most important pillars of the transition into the circular economy concept, a sustainable approach for biorefinery. This work aims to extend and improve knowledge in the anaerobic co-digestion of complementary substrates, give...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-07-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/10/15/5126 |
| _version_ | 1797561274716913664 |
|---|---|
| author | Kaoutar Aboudi Xiomara Gómez-Quiroga Carlos José Álvarez-Gallego Luis Isidoro Romero-García |
| author_facet | Kaoutar Aboudi Xiomara Gómez-Quiroga Carlos José Álvarez-Gallego Luis Isidoro Romero-García |
| author_sort | Kaoutar Aboudi |
| collection | DOAJ |
| description | Biogas production through anaerobic digestion has proven to be one of the most important pillars of the transition into the circular economy concept, a sustainable approach for biorefinery. This work aims to extend and improve knowledge in the anaerobic co-digestion of complementary substrates, given insights into wastes biodegradability and the influence of manure composition on the anaerobic process stability. Anaerobic co-digestion of sugar beet by-products with two kinds of animal manure (pig and cow) was investigated in semi-continuous assays, analyzing both common and non-classical parameters. Co-digestion with manure clearly mitigated the inhibitory effect of volatile fatty acids at high organic loading rates, leading to increases in methane production by 70% and 31% in comparison with individual digestion of sugar beet by-products, for co-digestion with pig and cow manure, respectively. Non-classical parameters could give more insight into the coupling/uncoupling of the anaerobic digestion phases and the involved microorganisms. Indirect parameters indicated that the process failure at the critical organic loading rates was mainly due to methanogenesis inhibition in the co-digestion with pig manure, while in co-digestion with cow manure or in individual digestion of sugar beet by-products, both hydrolysis–acidogenesis and methanogenesis phases were affected. Biomethanation degree refers to the maximum methane potential of organic wastes. Sugar beet by-products required a long digestion-time to reach high biodegradability. However, short digestion-times for co-digestion assays led to a high biomethanation degree. |
| first_indexed | 2024-03-10T18:11:43Z |
| format | Article |
| id | doaj.art-1180d4a02dbc45fabbd9c6aff1868fc6 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T18:11:43Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-1180d4a02dbc45fabbd9c6aff1868fc62023-11-20T07:59:20ZengMDPI AGApplied Sciences2076-34172020-07-011015512610.3390/app10155126Insights into Anaerobic Co-Digestion of Lignocellulosic Biomass (Sugar Beet By-Products) and Animal Manure in Long-Term Semi-Continuous AssaysKaoutar Aboudi0Xiomara Gómez-Quiroga1Carlos José Álvarez-Gallego2Luis Isidoro Romero-García3Department of Chemical Engineering and Food Technology, Faculty of Sciences, Wine and Agrifood Research Institute (IVAGRO), The University of Cádiz, Republic Saharawi Avenue, Box nº 40, 11510 Puerto Real, SpainDepartment of Chemical Engineering and Food Technology, Faculty of Sciences, Wine and Agrifood Research Institute (IVAGRO), The University of Cádiz, Republic Saharawi Avenue, Box nº 40, 11510 Puerto Real, SpainDepartment of Chemical Engineering and Food Technology, Faculty of Sciences, Wine and Agrifood Research Institute (IVAGRO), The University of Cádiz, Republic Saharawi Avenue, Box nº 40, 11510 Puerto Real, SpainDepartment of Chemical Engineering and Food Technology, Faculty of Sciences, Wine and Agrifood Research Institute (IVAGRO), The University of Cádiz, Republic Saharawi Avenue, Box nº 40, 11510 Puerto Real, SpainBiogas production through anaerobic digestion has proven to be one of the most important pillars of the transition into the circular economy concept, a sustainable approach for biorefinery. This work aims to extend and improve knowledge in the anaerobic co-digestion of complementary substrates, given insights into wastes biodegradability and the influence of manure composition on the anaerobic process stability. Anaerobic co-digestion of sugar beet by-products with two kinds of animal manure (pig and cow) was investigated in semi-continuous assays, analyzing both common and non-classical parameters. Co-digestion with manure clearly mitigated the inhibitory effect of volatile fatty acids at high organic loading rates, leading to increases in methane production by 70% and 31% in comparison with individual digestion of sugar beet by-products, for co-digestion with pig and cow manure, respectively. Non-classical parameters could give more insight into the coupling/uncoupling of the anaerobic digestion phases and the involved microorganisms. Indirect parameters indicated that the process failure at the critical organic loading rates was mainly due to methanogenesis inhibition in the co-digestion with pig manure, while in co-digestion with cow manure or in individual digestion of sugar beet by-products, both hydrolysis–acidogenesis and methanogenesis phases were affected. Biomethanation degree refers to the maximum methane potential of organic wastes. Sugar beet by-products required a long digestion-time to reach high biodegradability. However, short digestion-times for co-digestion assays led to a high biomethanation degree.https://www.mdpi.com/2076-3417/10/15/5126anaerobic co-digestionsugar beet by-productsmanuresemi-continuous feeding modemethane improvementnon-classical parameters |
| spellingShingle | Kaoutar Aboudi Xiomara Gómez-Quiroga Carlos José Álvarez-Gallego Luis Isidoro Romero-García Insights into Anaerobic Co-Digestion of Lignocellulosic Biomass (Sugar Beet By-Products) and Animal Manure in Long-Term Semi-Continuous Assays Applied Sciences anaerobic co-digestion sugar beet by-products manure semi-continuous feeding mode methane improvement non-classical parameters |
| title | Insights into Anaerobic Co-Digestion of Lignocellulosic Biomass (Sugar Beet By-Products) and Animal Manure in Long-Term Semi-Continuous Assays |
| title_full | Insights into Anaerobic Co-Digestion of Lignocellulosic Biomass (Sugar Beet By-Products) and Animal Manure in Long-Term Semi-Continuous Assays |
| title_fullStr | Insights into Anaerobic Co-Digestion of Lignocellulosic Biomass (Sugar Beet By-Products) and Animal Manure in Long-Term Semi-Continuous Assays |
| title_full_unstemmed | Insights into Anaerobic Co-Digestion of Lignocellulosic Biomass (Sugar Beet By-Products) and Animal Manure in Long-Term Semi-Continuous Assays |
| title_short | Insights into Anaerobic Co-Digestion of Lignocellulosic Biomass (Sugar Beet By-Products) and Animal Manure in Long-Term Semi-Continuous Assays |
| title_sort | insights into anaerobic co digestion of lignocellulosic biomass sugar beet by products and animal manure in long term semi continuous assays |
| topic | anaerobic co-digestion sugar beet by-products manure semi-continuous feeding mode methane improvement non-classical parameters |
| url | https://www.mdpi.com/2076-3417/10/15/5126 |
| work_keys_str_mv | AT kaoutaraboudi insightsintoanaerobiccodigestionoflignocellulosicbiomasssugarbeetbyproductsandanimalmanureinlongtermsemicontinuousassays AT xiomaragomezquiroga insightsintoanaerobiccodigestionoflignocellulosicbiomasssugarbeetbyproductsandanimalmanureinlongtermsemicontinuousassays AT carlosjosealvarezgallego insightsintoanaerobiccodigestionoflignocellulosicbiomasssugarbeetbyproductsandanimalmanureinlongtermsemicontinuousassays AT luisisidororomerogarcia insightsintoanaerobiccodigestionoflignocellulosicbiomasssugarbeetbyproductsandanimalmanureinlongtermsemicontinuousassays |