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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional de Colombia
2019
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| Online Access: | https://www.redalyc.org/articulo.oa?id=179960155009 https://www.redalyc.org/journal/1799/179960155009/ https://www.redalyc.org/journal/1799/179960155009/html/ https://www.redalyc.org/journal/1799/179960155009/179960155009.epub https://www.redalyc.org/journal/1799/179960155009/movil |
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Table of Contents:
- Incidence of operative parameters in the production of biohydrogen generated from urban organic waste Deisy Yuliana Cano Quintero Edilson León Moreno-Cárdenas Agrociencias Stirring Fermentation Optimization Organic matter Renewable energy Organic waste is considered a substrate of great interest to produce biohydrogen. In the present work, the influence of some physical and chemical parameters in the operation of a bioreactor for biohydrogen generation were studied, taking as a substrate organic residue from a wholesale food market without adding inoculum. Therefore, an experimental design of central composition was made, with four factors and two levels. The dependent variables were maximum hydrogen content (% of H2), daily production of hydrogen (L H2 d-1) and its cumulative production (L H2). The independent variables were operation pH (pHo), pH of acidification (pHa), the duration time of the acidification stage, and stirring. A numerical optimization was carried out, allowing the prioritization of the factors, and maximizing the response variables. Resulting in a yield of up to 14.9 L H2 d-1, a hydrogen content of 49.2% and a cumulative production of 21.6 L H2, for pHa values of 4.9; pHo between 6 and 6.1; acidification time of 2 d and stirring of 41.4 rpm. Likewise, a graphical optimization was carried out, reaching 14.9 L H2 d-1, a hydrogen content of 44.2% and an accumulated 22.8 L H2, for pHa values between 4.5 and 4.95; pHo between 5.6 and 6.3; acidification time of 2 d, and stirring of 37.1 rpm. Maximum yields were 1.9 L H2 Lwaste.day -1, 4800 mL H2 gCOD -1, and 608.6 m L H2 gTVSadded -1, values similar to those reported by other authors using organic waste in the production of hydrogen, using inoculum. 2019 artículo científico 0304-2847 https://www.redalyc.org/articulo.oa?id=179960155009 https://www.redalyc.org/journal/1799/179960155009/ https://www.redalyc.org/journal/1799/179960155009/html/ https://www.redalyc.org/journal/1799/179960155009/179960155009.epub https://www.redalyc.org/journal/1799/179960155009/movil 10.15446/rfnam.v72n2.73138 en http://www.redalyc.org/revista.oa?id=1799 Revista Facultad Nacional de Agronomía - Medellín application/pdf Universidad Nacional de Colombia Revista Facultad Nacional de Agronomía - Medellín (Colombia) Num.2 Vol.72