Biohydrogen production from organic solid waste in a sequencing batch reactor: An optimization of the hydraulic and solids retention time
Por:
Santiago, Sonia G., Morgan-Sagastume, Juan M., Monroy, Oscar, Moreno-Andrade, Ivan
Publicada:
25 sep 2020
Ahead of Print:
1 ene 2019
Resumen:
Hydrogen production from organic solids waste was evaluated using a sequencing batch reactor (SBR) under mesophilic conditions, to investigate the effect of the hydraulic retention time (HRT) and solids retention time (SRT) on hydrogen production. The examined HRT and SRT values were from 4.6 to 27 h and 17–102 h, respectively. The results showed high hydrogen production rates (1.86 LH2/L·d) and a yield of 127.26 mLH2/gCODremoved for an SRT of 60 h and an HRT of 16 h. The highest chemical oxygen demand (COD) removal (38.6 ± 6.9%) was also obtained under those conditions. The highest substrate hydrolysis percentage (73.0 ± 11.4%) was obtained at an HRT of 16 h and an SRT of 102 h. A short SRT of 20 h affected hydrogen production, which decreased up to 90%. With an SRT of 20 h and an HRT of 16 h, acetic acid-like fatty acids were mainly obtained. In experiments with a long SRT (60 h), the obtained fatty acid was butyrate. The conversion efficiencies for converting particulate material into fatty acids were 51–47% using a long SRT; a short HRT resulted in percentages of 37–40%. A 3D surface analysis was performed using the maximum hydrogen yield conditions as the central point, showing that the optimal hydrogen production can be obtained with an HRT of 16 h and an SRT of 55 h. Microbial analysis showed the predominance of the Olsenella genus at an HRT< 8 h and the presence of Clostridium at an HRT of 16 h. The HRT is the main parameter leading the community composition in the process. © 2019 Hydrogen Energy Publications LLC
Filiaciones:
Santiago, Sonia G.:
Laboratory for Research on Advanced Processes for Water Treatment, Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro, 76230, Mexico
Univ Nacl Autonoma Mexico, Inst Ingn, Lab Res Adv Proc Water Treatment, Unidad Acad Juriquilla, Blvd Juriquilla 3001, Queretaro 76230, Mexico
Morgan-Sagastume, Juan M.:
Instituto de Ingeniería, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, Mexico City, 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Ingn, Ciudad Univ, Mexico City 04510, DF, Mexico
Monroy, Oscar:
Department of Biotechnology, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, Col. Vicentina, Mexico City, 09340, Mexico
Univ Autonoma Metropolitana Iztapalapa, Dept Biotechnol, Av San Rafael Atlixco 186, Mexico City 09340, DF, Mexico
Moreno-Andrade, Ivan:
Laboratory for Research on Advanced Processes for Water Treatment, Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro, 76230, Mexico
Univ Nacl Autonoma Mexico, Inst Ingn, Lab Res Adv Proc Water Treatment, Unidad Acad Juriquilla, Blvd Juriquilla 3001, Queretaro 76230, Mexico
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