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Effect of Carbon/Nitrogen Ratio, Temperature, and Inoculum Source on Hydrogen Production from Dark Codigestion of Fruit Peels and Sewage Sludge

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Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, Av. Pedro de Alba S/N, Ciudad Universitaria, San Nicolás de los Garza 66455, Mexico
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Facultad de Ingeniería Civil, Universidad Autónoma de Nuevo León, Departamento de Ingeniería Ambiental, Av. Universidad S/N, Ciudad Universitaria, San Nicolás de los Garza 66455, Mexico
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Depto. Ingenierías Química, Electrónica y Biomédica. División de Ciencias e Ingenierías, Campus León, Universidad de Guanajuato, Loma del Bosque 103, Col. Lomas del Campestre, León 37150, Mexico
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Universidad Autónoma Agraria Antonio Narro, Calzada Antonio Narro 1923, Buena Vista, Saltillo 25315, Mexico
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Authors to whom correspondence should be addressed.
Sustainability 2019, 11(7), 2139; https://doi.org/10.3390/su11072139
Received: 6 March 2019 / Revised: 3 April 2019 / Accepted: 3 April 2019 / Published: 10 April 2019
(This article belongs to the Section Energy Sustainability)
This paper studies the use of fruit peel biomass and waste sludge from municipal wastewater treatment plants in the metropolitan area of Monterrey, Mexico as an alternative way of generating renewable energy. Using a Plackett–Burman experimental design, we investigated the effects of temperature, inoculum source, and the C/N (Carbon/Nitrogen) ratio on dark fermentation (DF). The results indicate that it is possible to produce hydrogen using fruit peels codigested with sewage sludge. By adjusting the C/N ratio in response to the physicochemical characterization of the substrates, it was revealed that the quantities of carbohydrates and nitrogen were sufficient for the occurrence of the fermentation process with biogas production greater than 2221 ± 5.8 mL L−1Reactor and hydrogen selectivity of 23% (366 ± 1 mL H2·L−1Reactor) at the central point. The kinetic parameters (Hmax= 86.6 mL·L−1, Rm = 2.6 mL L−1 h−1, and λ = 1.95 h) were calculated using the modified Gompertz model. The quantification of soluble metabolites, such as acetic acid (3600 mg L−1) and ethyl alcohol (3.4 ± 0.25% v/v), confirmed the presence of acetogenesis in the generation of hydrogen. View Full-Text
Keywords: biohydrogen; chemical oxygen demand; sludge; volatile fatty acids; acetogenesis biohydrogen; chemical oxygen demand; sludge; volatile fatty acids; acetogenesis
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MDPI and ACS Style

Reyna-Gómez, L.M.; Molina-Guerrero, C.E.; Alfaro, J.M.; Suárez Vázquez, S.I.; Robledo-Olivo, A.; Cruz-López, A. Effect of Carbon/Nitrogen Ratio, Temperature, and Inoculum Source on Hydrogen Production from Dark Codigestion of Fruit Peels and Sewage Sludge. Sustainability 2019, 11, 2139. https://doi.org/10.3390/su11072139

AMA Style

Reyna-Gómez LM, Molina-Guerrero CE, Alfaro JM, Suárez Vázquez SI, Robledo-Olivo A, Cruz-López A. Effect of Carbon/Nitrogen Ratio, Temperature, and Inoculum Source on Hydrogen Production from Dark Codigestion of Fruit Peels and Sewage Sludge. Sustainability. 2019; 11(7):2139. https://doi.org/10.3390/su11072139

Chicago/Turabian Style

Reyna-Gómez, Lirio M., Carlos E. Molina-Guerrero, Juan M. Alfaro, Santiago I. Suárez Vázquez, Armando Robledo-Olivo, and Arquímedes Cruz-López. 2019. "Effect of Carbon/Nitrogen Ratio, Temperature, and Inoculum Source on Hydrogen Production from Dark Codigestion of Fruit Peels and Sewage Sludge" Sustainability 11, no. 7: 2139. https://doi.org/10.3390/su11072139

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