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<dc:title>Análisis del proceso de hidrólisis de orujo de  uva mediante reactores ultrarrápidos para la  obtención de lignina</dc:title>
<dc:creator>Briongos Merino, Iván</dc:creator>
<dc:contributor>Vaquerizo Martín, Luis</dc:contributor>
<dc:contributor>Universidad de Valladolid. Escuela de Ingenierías Industriales</dc:contributor>
<dc:description>Este trabajo estudia la hidr´olisis del orujo de uva con agua supercr´ıtica&#xd;
para obtener lignina. A 380°C y 260bar se alcanz´o un 63% en el s´olido en&#xd;
0,066s y hasta un 74% en 1,283s, partiendo de un 38%, lo que confirma&#xd;
su potencial como materia prima en biorrefiner´ıas. Se evalu´o un reactor&#xd;
hidrocicl´onico que combina reacci´on y separaci´on, eficaz con suspensiones&#xd;
de carbonato de calcio. La mejor separaci´on (65% de recuperaci´on en el&#xd;
fondo) se logr´o con un flujo del 71% por la salida superior y 29% por la&#xd;
inferior. No obstante, las limitaciones del bombeo impidieron transportar&#xd;
suspensiones con m´as del 2,1% en masa. El an´alisis econ´omico estim´o un&#xd;
precio m´ınimo de venta de 118,02USD/100g, basado en un VAN nulo en&#xd;
10 a˜nos y una TIR del 2%. En el plano ambiental, el proceso mostr´o un alto&#xd;
impacto: 469MJ/kg y un e-factor de 209,7kg residuos/kg lignina.</dc:description>
<dc:description>This study investigates the hydrolysis of grape pomace with supercritical&#xd;
water to produce lignin. At 380°C and 260bar, 63 % solids were obtained in&#xd;
0.066s, increasing up to 74 % in 1.283s from an initial 38 %, confirming its&#xd;
potential as a feedstock for biorefineries. A hydrocyclone reactor combining&#xd;
reaction and separation was evaluated, proving effective with calcium carbo&#xd;
nate suspensions. The best separation (65 % recovery in the bottom) was&#xd;
achieved with 71 % of the flow through the top outlet and 29 % through the&#xd;
bottom. However, pumping limitations prevented handling suspensions with&#xd;
more than 2.1 % mass fraction. Economic analysis estimated a minimum&#xd;
selling price of 118.02USD/100g, based on a zero NPV over 10 years and&#xd;
an IRR of 2 %. From an environmental perspective, the process showed a&#xd;
high impact, with 469MJ/kg and an e-factor of 209.7kg waste/kg lignin</dc:description>
<dc:date>2026-01-19T14:54:35Z</dc:date>
<dc:date>2026-01-19T14:54:35Z</dc:date>
<dc:date>2025</dc:date>
<dc:date>2028-07-01</dc:date>
<dc:type>info:eu-repo/semantics/bachelorThesis</dc:type>
<dc:identifier>https://uvadoc.uva.es/handle/10324/81835</dc:identifier>
<dc:language>spa</dc:language>
<dc:rights>info:eu-repo/semantics/embargoedAccess</dc:rights>
<dc:rights>http://creativecommons.org/licenses/by-nc-nd/4.0/</dc:rights>
<dc:rights>Attribution-NonCommercial-NoDerivatives 4.0 Internacional</dc:rights>
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