Study of the Behavior of Alkalinities Predicted by the AM2 Model
Anaerobic digestion (AD) is an efficient wastewater bioprocess, suitable for treating agroindustrial residues with high organic loads and characterized by both a low environmental impact and energy generation. This process is conformed by several chemical and biological reactions in an oxygen free a...
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| Format: | Article |
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MDPI AG
2022-05-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/10/1634 |
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| author | Armando Campos-Rodríguez Marco A. Zárate-Navarro Efrén Aguilar-Garnica Víctor Alcaraz-González Juan Paulo García-Sandoval |
| author_facet | Armando Campos-Rodríguez Marco A. Zárate-Navarro Efrén Aguilar-Garnica Víctor Alcaraz-González Juan Paulo García-Sandoval |
| author_sort | Armando Campos-Rodríguez |
| collection | DOAJ |
| description | Anaerobic digestion (AD) is an efficient wastewater bioprocess, suitable for treating agroindustrial residues with high organic loads and characterized by both a low environmental impact and energy generation. This process is conformed by several chemical and biological reactions in an oxygen free atmosphere, that degrades high molecular weight organic compounds into carbon dioxide and methane mainly but also into traces of hydrogen and ammonia. This process is potentially unstable to volatile fatty acids (VFA), and the alkalinity. variations and is satisfactorily described by the non-linear AM2 model. In this contribution, the AM2 model is modified to include a more general expression for the pH, a cheap and continuous measurement, and also to add more detail in the interactions of the VFA, bicarbonates, and the alkalinity, key factors in the process stability. The stability of the AM2 modified model is explored through a rigorous bifurcation analysis that identifies unstable operation zones and viability of operation trajectories as a function of the dilution rate. Finally, an experimental validation is carried out to show the feasibility and accuracy of the proposed modifications. |
| first_indexed | 2024-03-10T01:34:18Z |
| format | Article |
| id | doaj.art-2c100a3770064f81827e0bd7fcc233ed |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T01:34:18Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-2c100a3770064f81827e0bd7fcc233ed2023-11-23T13:35:30ZengMDPI AGWater2073-44412022-05-011410163410.3390/w14101634Study of the Behavior of Alkalinities Predicted by the AM2 ModelArmando Campos-Rodríguez0Marco A. Zárate-Navarro1Efrén Aguilar-Garnica2Víctor Alcaraz-González3Juan Paulo García-Sandoval4Departamento de Biotecnológicas y Ambientales, Universidad Autónoma de Guadalajara, Av. Patria 1201, Col. Lomas del Valle, Zapopan C.P. 45129, Jalisco, MexicoDepartamento de Biotecnológicas y Ambientales, Universidad Autónoma de Guadalajara, Av. Patria 1201, Col. Lomas del Valle, Zapopan C.P. 45129, Jalisco, MexicoDepartamento de Biotecnológicas y Ambientales, Universidad Autónoma de Guadalajara, Av. Patria 1201, Col. Lomas del Valle, Zapopan C.P. 45129, Jalisco, MexicoDepartamento de Ingeniería Química, Universidad de Guadalajara, Calz. Gral. Marcelino García Barragán 1451, Guadalajara C.P. 44430, Jalisco, MexicoDepartamento de Ingeniería Química, Universidad de Guadalajara, Calz. Gral. Marcelino García Barragán 1451, Guadalajara C.P. 44430, Jalisco, MexicoAnaerobic digestion (AD) is an efficient wastewater bioprocess, suitable for treating agroindustrial residues with high organic loads and characterized by both a low environmental impact and energy generation. This process is conformed by several chemical and biological reactions in an oxygen free atmosphere, that degrades high molecular weight organic compounds into carbon dioxide and methane mainly but also into traces of hydrogen and ammonia. This process is potentially unstable to volatile fatty acids (VFA), and the alkalinity. variations and is satisfactorily described by the non-linear AM2 model. In this contribution, the AM2 model is modified to include a more general expression for the pH, a cheap and continuous measurement, and also to add more detail in the interactions of the VFA, bicarbonates, and the alkalinity, key factors in the process stability. The stability of the AM2 modified model is explored through a rigorous bifurcation analysis that identifies unstable operation zones and viability of operation trajectories as a function of the dilution rate. Finally, an experimental validation is carried out to show the feasibility and accuracy of the proposed modifications.https://www.mdpi.com/2073-4441/14/10/1634anaerobic digestionAM2AMOCOstabilityalkalinity |
| spellingShingle | Armando Campos-Rodríguez Marco A. Zárate-Navarro Efrén Aguilar-Garnica Víctor Alcaraz-González Juan Paulo García-Sandoval Study of the Behavior of Alkalinities Predicted by the AM2 Model Water anaerobic digestion AM2 AMOCO stability alkalinity |
| title | Study of the Behavior of Alkalinities Predicted by the AM2 Model |
| title_full | Study of the Behavior of Alkalinities Predicted by the AM2 Model |
| title_fullStr | Study of the Behavior of Alkalinities Predicted by the AM2 Model |
| title_full_unstemmed | Study of the Behavior of Alkalinities Predicted by the AM2 Model |
| title_short | Study of the Behavior of Alkalinities Predicted by the AM2 Model |
| title_sort | study of the behavior of alkalinities predicted by the am2 model |
| topic | anaerobic digestion AM2 AMOCO stability alkalinity |
| url | https://www.mdpi.com/2073-4441/14/10/1634 |
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