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Steering Hexanol Formation in a Continuous Chain Elongation Process

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Año de publicación 2021
Idioma Inglés

Descripción: Abstract: Chain elongation fermentation in open cultures systems can tolerate complex organic waste and convert it into useful biochemicals (commodities) such as caproic acid. In previous chain elongation research, fatty alcohols such as hexanol have been also documented. Hexanol has a potential application as biofuel, is less corrosive, watersoluble, and toxic than caproic acid. Moreover, the hexanol market size seems more attractive than the one of caproic acid. This research aims to produce hexanol via a chain elongation process in an upflow anaerobic sludge blanket (UASB) system. Granular sludge formation was also considered due to its advantages such as high biomass concentration and settleability. The highest selectivity (based on total carbon products in the effluent) and productivity of caproate was 82.49 % on day 35 and 10.25 g L-1 d -1 on day 33, whereas for hexanol was 1.66 % and 0.19 g L-1 d -1 , both on day 77. CO2 supply had a positive effect on chain elongation activity and hexanol formation. Selectivity and productivity of hexanol was not negatively affected despite methane formation. Throughout the whole study, suspended biomass was the dominant form. A thick biofilm layer on the inner wall of the reactor was present from day 19 to 76 and black aggregates became more visible from day 76 onwards, although not significantly. The process was severely inhibited by substrate (ethanol) toxicity during the last phase (36.77 ± 3.23 g L-1 ).
Citación recomendada (normas APA)
: Santiago Daniel; Leeuw Delgado Tovar, "Steering Hexanol Formation in a Continuous Chain Elongation Process", Colombia:-, 2021. Consultado en línea en la Biblioteca Digital de Bogotá (https://www.bibliotecadigitaldebogota.gov.co/resources/3711496/), el día 2025-05-27.

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Fuente Biblioteca Virtual Banco de la República
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Año de publicación 2021
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Cobertura Colombia

Steering Hexanol Formation in a Continuous Chain Elongation Process

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