Continuous production of hydrogen from oat straw hydrolysate in a biotrickling filter |
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| Authors: | Sonia ArriagaIzcoatl Rosas,Felipe Alatriste-Mondragó nElí as Razo-Flores |
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| Affiliation: | División de Ciencias Ambientales, Instituto Potosino de Investigación Científica y Tecnológica A.C., Camino a la Presa San José No. 2055, Col. Lomas 4a. Sección, C.P. 78216, San Luis Potosí, SLP, Mexico |
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| Abstract: | Hydrogen was produced in a biotrickling filter (BF) packed with perlite and fed with oat straw acid hydrolysate at 30 °C. Inlet chemical oxygen demand (COD) from 1.2 to 35 g/L and hydraulic retention time (HRT) between 24 h and 6 h were assayed. With increasing inlet COD or decreasing HRT, H2 production rate (HPR) increased but H2 production yield (HY) decreased. Maximum HPR of 81.4 mL H2/Lreactor h (3.3 mmol H2/Lreactor h) and HY of 2.9 mol H2/molhexose consumed were found at an inlet COD of 0.05 gCOD/L h (HRT 24 h) and 2.9 gCOD/L h (HRT 12 h), respectively. Maximum hydrogen composition in gas was 45 ± 4% (v/v) with CO2 as balance. Methane was not detected. Maximum HPR and inlet COD used in this work were higher than others reported for reactors with suspended or fixed biomass. However, implementation of strategies for biomass control to avoid reactor clogging is needed. |
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| Keywords: | Biotrickling filter Continuous hydrogen production Hydraulic retention time Oat straw hydrolysate |
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