Bibliographic citations
Cerdán, J., (2020). Potencial de producción de ácidos grasos volátiles en lodos de Ptar, residuos urbanos y agroindustriales: enfoque hacia una economía circular [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/4445
Cerdán, J., Potencial de producción de ácidos grasos volátiles en lodos de Ptar, residuos urbanos y agroindustriales: enfoque hacia una economía circular []. PE: Universidad Nacional Agraria La Molina; 2020. https://hdl.handle.net/20.500.12996/4445
@mastersthesis{sunedu/3012821,
title = "Potencial de producción de ácidos grasos volátiles en lodos de Ptar, residuos urbanos y agroindustriales: enfoque hacia una economía circular",
author = "Cerdán Morillo, José Manuel Alejandro",
publisher = "Universidad Nacional Agraria La Molina",
year = "2020"
}
This study evaluated the production potential of volatile fatty acids (VFA) from urban and agroindustrial waste: Sewage sludge (SS), organic fraction of urban solid waste (OFMSW), artichoke residues (ART), residues of apple pulp (APP) and microalgal biomass (MB), under thermophilic conditions and batch tests. The VFA production were carried out under conditions of mono-fermentation and acidic pH (5.5), and under conditions of cofermentation (SS as co-substrate) and at alkaline pH (9). In addition, the process of cofermentation of SS + APP (1:1) was evaluated on a 15 L automated pilot platform in discontinuous mode of operation. The results indicate that the production and yield of VFA was influenced by the presence of a co-substrate and alkaline pH. Thus, the high potential for laboratory-scale of VFA production was achieved from the co-fermentation of SS + APP (1:1) to 15.50 g of COD L-1 and an acidogenic conversion yield of 255.68 mg VFA g-1 COD, furthermore, co-fermentation of SS+ OFMSW (4:1) attained a VFA production of 11.12 g COD L-1 and an acid conversion performance of 269.26 mgVFA g -1 COD. The production potential of VFA in the co-fermentation of SS + APP (1:1) on a pilot scale reached up 6.40 g COD L-1 and an acidogenic conversion yield of 94.77 mgVFA g -1 COD. Acetic followed by butyric was obtained as the main bioproduct during the acidic fermentation at alkaline pH, whereasshifting to acidic pH was promoted butyric production. The results also revealed a significant potential of organic waste to enrich a biorefinery scenario, i.e, acetic acid and butyric acid, which have higher industrial applicability and economic potential than methane.
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