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<dc:title>Volatile fatty acids production from fish wastewater</dc:title>
<dc:creator>Aragón Ruiz, Manuel</dc:creator>
<dc:contributor>García Encina, Pedro Antonio</dc:contributor>
<dc:contributor>Universidad de Valladolid. Escuela de Ingenierías Industriales</dc:contributor>
<dc:subject>Ácidos grasos - Industria y comercio</dc:subject>
<dc:subject>Biodegradación</dc:subject>
<dc:subject>Aguas residuales - Depuración - Tratamiento biológico</dc:subject>
<dc:subject>Industria pesquera</dc:subject>
<dc:subject>Recuperación (Residuos, etc.)</dc:subject>
<dc:description>In this work, two experiments were carried out to investigate the production of volatile &#xd;
fatty acids (VFAs) through the anaerobic degradation of a wastewater collected from a &#xd;
fish processing industry. The first experiment was carried out in batches, at different &#xd;
initial pH values (5, 6, 7, 8 and 9). Acetate and propionate were the main products &#xd;
obtained at the end of the experiment. The highest production of VFAs (5276 mg &#xd;
COD/L) was obtained at pH 8.   &#xd;
The second experiment was performed in an anaerobic continuous reactor at pH 5.5. &#xd;
Several conditions were tested to improve the VFAs production such as different HRT &#xd;
(18 h, 12 h and 8 h), different feed´s dilution (50 x, 25 x, 10 x, 2 x and 1 x) and different &#xd;
feed´s salinity (2.8 g/L and 20 g/L of salt). The increase of feed´s salinity appear to be &#xd;
the best strategy, since the concentration of VFAs increased (457 mg COD/L with 2,8 &#xd;
mg/L of salt to 788 mg COD/L with 20 mg/L of salt) and the percentage of CH4 in the &#xd;
reactor decreased.</dc:description>
<dc:description>El objetivo del trabajo fue la obtención de ácidos grasos volátiles (AGVs) a través de la degradación anaeróbica incompleta de un efluente procedente de una industria de procesamiento de pescado. Para ello se realizaron dos experimentos: &#xd;
El primero se llevó a cabo en un reactor anaerobio continuo. Durante el experimento se fueron variando distintos parámetros de operación: tiempo hidráulico de retención (TRH), dilución de la alimentación y salinidad de la misma, para encontrar las mejores condiciones para la producción de AGVs.&#xd;
El segundo experimento se llevó a cabo en ensayos por lotes a diferentes valores de pH: 5, 6, 7, 8 y 9. De esta forma se estudio cómo afectaban los distintos pHs a la producción de AGVs.</dc:description>
<dc:date>2019-03-28T11:30:03Z</dc:date>
<dc:date>2019-03-28T11:30:03Z</dc:date>
<dc:date>2018</dc:date>
<dc:type>info:eu-repo/semantics/bachelorThesis</dc:type>
<dc:identifier>http://uvadoc.uva.es/handle/10324/35285</dc:identifier>
<dc:language>eng</dc:language>
<dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
<dc:rights>http://creativecommons.org/licenses/by-nc-nd/4.0/</dc:rights>
<dc:rights>Attribution-NonCommercial-NoDerivatives 4.0 International</dc:rights>
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