Catalytic Processes & Waste Valorization

Nuestro objetivo es el desarrollo de nuevos procesos térmicos y catalíticos, o de la adaptación y mejora de los ya implantados industrialmente, para obtener combustibles y productos químicos de valor añadido. Partiendo de residuos, materias primas alternativas al petróleo o fracciones de interés secundario del mismo y trabajando en rutas de transformación que preservan el medio ambiente. Nuestras actividades están encaminadas a obtener resultados de excelencia y de interés social y económico, dando respuesta a los retos referentes a la energía y sostenibilidad. Para ello, se estudian los procesos a diferentes niveles, desde la escala microscópica de los fenómenos físicos y químicos implicados, hasta la de diseño y escalado a plantas de demostración, buscando la mejora en las facetas de conocimiento fundamental y metodológico, modelado cinético, y diseño y simulación de las unidades de proceso.

Title: Methylene blue adsorption by chemically activated waste pork bones

Title: Conversion of waste animal bones into porous hydroxyapatite by alkaline treatment: Effect of the impregnation ratio and investigation of the activation mechanism

Abstract: A study was carried out on the continuous thermal treatment of raw bio-oil and of its aqueous fraction (obtained by adding water) based on the interest of this strategy for separating the pyrolytic lignin, which enhances the valorization of the treated bio-oil in a subsequent in-line catalytic step. It was determined that after the direct thermal treatment of raw bio-oil, 77...

Abstract: The effect of the basic (KOH) or acid (H3PO4) treatment of the MFI (HZSM-5) zeolite has been studied comparing the structural and acidic features with the catalytic performance and deactivation of a set of unmodified and modified zeolites (SiO2/Al2O3 = 30–280, 0–3 wt% of K or P). The properties of the catalysts have been elucidated using XRD, 27Al and 29Si NMR, N2...

Abstract: The transformation of chloromethane into light olefins (C2–C4) has been studied both on HZSM-5 catalysts with different SiO2/Al2O3 ratios (30, 80, and 280) and on SAPO-n catalysts (SAPO-34 and SAPO-18) in order to analyze the role of shape selectivity and acidity in the kinetic behavior. The catalysts have been prepared by agglomerating these acid functions with bentonite and...

Title: Bed pressure drop in conical spouted beds with a draft tube in thermal treatment of wastes of different particle diameter, density and shape Abstract: An experimental study of operating bed pressure drop was performed in thermal treatment of coarse waste particles of different size, density, and sphericity in conical spouted beds by introducing a nonporous draft tube. The...

Abstract: A study has been performed on the production of high quality activated carbon from rice husk char obtained by flash pyrolysis in a conical spouted bed reactor. In order to enhance both the quality of the adsorbents obtained and the economy of the process, the amorphous silica contained in the char has been recovered with Na2CO3. Subsequently, the resulting carbonaceous material...

Abstract: The fast pyrolysis of a forestry sector waste composed of Eucalyptus globulus wood, bark and leaves has been studied in a continuous bench-scale conical spouted bed reactor plant at 500 °C. A high bio-oil yield of 75.4 wt.% has been obtained, which is explained by the suitable features of this reactor for biomass fast pyrolysis. Gas and bio-oil compositions have been determined by...

Abstract: Co-pyrolysis of sewage sludge and lignocellulosic biomass has been studied in order to improve the composition of the bio-oil derived from sewage sludge fast pyrolysis as well as progress on the viability of this waste valorization. Fast pyrolysis of a mixture of 50 wt.% sewage sludge and 50 wt.% pinewood sawdust has been carried out in continuous mode at 500 °C in a conical...

Abstract: Steam gasification (900 °C) of high density polyethylene (HDPE) in a conical spouted bed reactor (CSBR) followed by steam reforming in a fixed bed reactor (Ni commercial catalyst) has been carried out. The effect reforming temperature in the 600–700 °C range has on product yields and gas composition as well as on the amount and nature of the coke deposited on the catalyst has...