Effect of alkaline pre-treatment on the anaerobic biodegradability of coffee husk
The present paper deals with the mono-digestion of coffee husk during the operation of batch reactors and semi-continuous stirred tank reactor (S-CSTR) using both pre-treated residual at 3% Ca(OH)2 and without pre-treatment. The semi-continuous operation was carried out in 4 stages at different org...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Universidad de Antioquia
2019-05-01
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| Series: | Revista Facultad de Ingeniería Universidad de Antioquia |
| Subjects: | |
| Online Access: | https://revistas.udea.edu.co/index.php/ingenieria/article/view/336449 |
| _version_ | 1827898251874926592 |
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| author | K De la Cruz-Martorell Y Gómez-Salcedo Y Santander DJ Catagua Mera JCD Mendoza I. Pereda-Reyes |
| author_facet | K De la Cruz-Martorell Y Gómez-Salcedo Y Santander DJ Catagua Mera JCD Mendoza I. Pereda-Reyes |
| author_sort | K De la Cruz-Martorell |
| collection | DOAJ |
| description |
The present paper deals with the mono-digestion of coffee husk during the operation of batch reactors and semi-continuous stirred tank reactor (S-CSTR) using both pre-treated residual at 3% Ca(OH)2 and without pre-treatment. The semi-continuous operation was carried out in 4 stages at different organic loading rate (OLR, [gVS L -1 d -1]) and hydraulic retention time (HRT, [d]) (OLR:HRT) ratios (0.1:90, 0.2:90, 0.2:45 and 0.2:30). As a result of the pre-treatment, up to 223% of the organic matter solubilisation was obtained. However, pre-treatment did not provide better results in biodegradability, observing a negative trend in methane yield when operating in S-CSTR, due to the accumulation of compounds from the fractionation of the lignin as is the case of polyphenols. The operation was further developed using the residual without pre-treatment. The highest methane yield was obtained at 45:0.2 when using the residual without pre-treatment being with 277 mLCH4 gVS-1 , for a methane productivity of 1.1 L L-1 d -1. When implementing the 30:0.2 ratio, a biomass washout was observed in the system, so it is recommended to operate at low OLR and high HRT when treating solid coffee wastes.
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| first_indexed | 2024-03-12T23:00:20Z |
| format | Article |
| id | doaj.art-fe342c30202c43e697e461c9cdcd864b |
| institution | Directory Open Access Journal |
| issn | 0120-6230 2422-2844 |
| language | English |
| last_indexed | 2024-03-12T23:00:20Z |
| publishDate | 2019-05-01 |
| publisher | Universidad de Antioquia |
| record_format | Article |
| series | Revista Facultad de Ingeniería Universidad de Antioquia |
| spelling | doaj.art-fe342c30202c43e697e461c9cdcd864b2023-07-19T12:29:07ZengUniversidad de AntioquiaRevista Facultad de Ingeniería Universidad de Antioquia0120-62302422-28442019-05-0192Effect of alkaline pre-treatment on the anaerobic biodegradability of coffee huskK De la Cruz-Martorell0Y Gómez-Salcedo1Y Santander2DJ Catagua Mera3JCD Mendoza4I. Pereda-Reyes5Technological University of Havana "José Antonio Echeverría" Technological University of Havana "José Antonio Echeverría" Technological University of Havana "José Antonio Echeverría" Biotechnological Research Center of EcuadorTechnological University of Havana "José Antonio Echeverría" Technological University of Havana "José Antonio Echeverría" The present paper deals with the mono-digestion of coffee husk during the operation of batch reactors and semi-continuous stirred tank reactor (S-CSTR) using both pre-treated residual at 3% Ca(OH)2 and without pre-treatment. The semi-continuous operation was carried out in 4 stages at different organic loading rate (OLR, [gVS L -1 d -1]) and hydraulic retention time (HRT, [d]) (OLR:HRT) ratios (0.1:90, 0.2:90, 0.2:45 and 0.2:30). As a result of the pre-treatment, up to 223% of the organic matter solubilisation was obtained. However, pre-treatment did not provide better results in biodegradability, observing a negative trend in methane yield when operating in S-CSTR, due to the accumulation of compounds from the fractionation of the lignin as is the case of polyphenols. The operation was further developed using the residual without pre-treatment. The highest methane yield was obtained at 45:0.2 when using the residual without pre-treatment being with 277 mLCH4 gVS-1 , for a methane productivity of 1.1 L L-1 d -1. When implementing the 30:0.2 ratio, a biomass washout was observed in the system, so it is recommended to operate at low OLR and high HRT when treating solid coffee wastes. https://revistas.udea.edu.co/index.php/ingenieria/article/view/336449anaerobic digestionalkaline pre-treatmentmethane yieldlignocellulosic biomasspolyphenols |
| spellingShingle | K De la Cruz-Martorell Y Gómez-Salcedo Y Santander DJ Catagua Mera JCD Mendoza I. Pereda-Reyes Effect of alkaline pre-treatment on the anaerobic biodegradability of coffee husk Revista Facultad de Ingeniería Universidad de Antioquia anaerobic digestion alkaline pre-treatment methane yield lignocellulosic biomass polyphenols |
| title | Effect of alkaline pre-treatment on the anaerobic biodegradability of coffee husk |
| title_full | Effect of alkaline pre-treatment on the anaerobic biodegradability of coffee husk |
| title_fullStr | Effect of alkaline pre-treatment on the anaerobic biodegradability of coffee husk |
| title_full_unstemmed | Effect of alkaline pre-treatment on the anaerobic biodegradability of coffee husk |
| title_short | Effect of alkaline pre-treatment on the anaerobic biodegradability of coffee husk |
| title_sort | effect of alkaline pre treatment on the anaerobic biodegradability of coffee husk |
| topic | anaerobic digestion alkaline pre-treatment methane yield lignocellulosic biomass polyphenols |
| url | https://revistas.udea.edu.co/index.php/ingenieria/article/view/336449 |
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