RT info:eu-repo/semantics/bachelorThesis
T1 Volatile fatty acids production from fish wastewater
A1 Pita Labrador, Diego
A2 Universidad de Valladolid. Escuela de Ingenierías Industriales
K1 Ácidos grasos - Industria y comercio
K1 Biodegradación
AB In this work, two experiments were performed to investigate the production of volatile fatty acids (VFAs) through the anaerobic degradation of an effluent formed by cleaning, cooking and brine wastewaters collected from a fish processing industry. The first experiment was carried out in an anaerobic continuous reactor at pH 8. Several strategies were tested to improve the VFAs production such as different HRT (18 h, 14 h, 8 h and 6 h), different feed´s dilution (50 x, 10 x, 2 x and 1 x) and different feed´s salinity (2.8 g/L and 20 g/L). For several HRT and dilutions, the concentration of VFAs was very low and methane (CH4) was detected in the reactor. The increase of feed´s salinity appear to be a good strategy, since the concentration of VFAs increased (401 mg COD/L with 2.8 g/L of salt to 900 mg COD/L with 20 g/L of salt) and the percentage of CH4 in the reactor decreased. The second experiment was carried out in batches at different initial pH values (5, 6, 7, 8 and 9). Acetate and propionate were the main products obtained at the end of the experiment. The highest production of VFAs (1583 mg COD/L) was obtained at pH 6.
YR 2018
FD 2018
LK http://uvadoc.uva.es/handle/10324/31466
UL http://uvadoc.uva.es/handle/10324/31466
LA eng
NO Departamento de Ingeniería Química y Tecnología del Medio Ambiente
DS UVaDOC
RD 29-abr-2024