Chemical and Environmental Engineering Group



  • Producción de bioaceite e hidrogeno a partir de microalgas mediante procesos de licuefacción hidrotérmica y reformado con vapor en reactores de membrana

    Funding : Ministerio de economía y competitividad (ENE2017-83696-R)
    Start / End Years : 2018 - 2020
    Principal Investigator : Calles Martín, José Antonio y Carrero Fernández, Alicia
    Research Team : - Alique Amor, David - Calles Martín, José Antonio - Carrero Fernández, Alicia - Martínez Díaz, David - Sanz Villanueva, Daniel - Vicente Crespo, Gemma - Vizcaíno Madridejos, Arturo J. 
    Summary : The controversy generated by the use of agricultural edible crops for energetic applications has increased the interest of microalgae for biofuels production. Microalgae do not need large fields for its cultivation and can grow quickly. Microalgae are a renewable, sustainable and non-polluting feedstock that contribute to reduce the greenhouse gas emissions because they use CO2 in their growth. For these reasons, the overall aim of this project is the sustainable production of hydrogen and bio-oil from microalgae.
    The microalgae hydrothermal liquefaction (HTL) requires lower temperatures than pyrolysis and high pressures to maintain liquid water. This is an advantage because a highly energy demand step like microalgae drying is not needed in liquefaction with the subsequent cost saving. Based on the previous results achieved by the research group (CTQ2013-44447-R project) the bio-oil obtained from one step HTL contains high oxygen (10-20 %) and nitrogen (1-8 %) amounts which are responsible of bio-oil low stability and also of the NOx emissions during bio-oil combustion. To solve these problems, a two-step HTL process is planned in this project. The first step is carried out at low temperature (T< 200 ºC) and provides an aqueous stream by decomposition of proteins and short chain carbohydrates. Next, the solid fraction undergoes a second stage of HTL at higher temperature (T = 250-350°C) with the aim of achieving a bio-oil with low content of nitrogen and oxygen. The second stage of liquefaction also produces a gas stream mainly containing carbon dioxide that may be recirculated to the cultivation of the microalgae.
    The aqueous fractions from both stages of liquefaction can be revalued through the production of high purity hydrogen by catalytic steam reforming in a membrane reactor. Hydrogen can be used as fuel using conventional technologies (combustion engines) or in development ones (fuel cells). Additionally in this project, oxidative steam reforming reactions will be done in order to reduce the energy needs of the process and to avoid catalysts deactivation by coke deposition.
    From the environmental point of view, the project will use tools like the Life Cycle Analysis (LCA) to assess the emissions and energy balances, checking that they conform to a model of sustainable development.

















Ultra-pure hydrogen via co-valorization of olive mill wastewater and bioethanol in Pd-membrane reactors

Alique, D.; Bruni, G.; Sanz, R.; Calles, J. A.; Tosti, S.


Coke evolution in simulated bio-oil aqueous fraction steam reforming using Co/SBA-15

Megía, P.J.; Vizcaíno, A.J.; Ruiz-Abad, M.; Calles J.A.; Carrero, A.


Agglomerated Co–Cr/SBA-15 catalysts for hydrogen production through acetic acid steam reforming

Calles, J. A.; Carrero, A.; Vizcaíno, A. J.; Megía, P. J.


Stability of pore-plated membranes for hydrogen production in fluidized-bed membrane reactors

Tosto, E.; Alique, D.; Martinez-Diaz, D.; Sanz, R.; Calles, J.A.; Caravella, A.; Medrano, J.A.; Gallucci, F.


H2 permeation increase of electroless pore-plated Pd/PSS membranes with CeO2 intermediate barriers

Martínez-Díaz, D.; Sanz, R.; Calles, J. A. Alique, D.


Steam reforming of model bio-oil aqueous fraction using Ni-(Cu, Co, Cr)/SBA-15 catalysts

Calles, J. A.; Carrero, A.; Vizcaíno, A. J.; García-Moreno, L.; Megía, P. J.


Pd-thickness reduction in electroless pore-plated membranes by using doped-ceria as interlayer

Martinez-Diaz, D.; Alique, D.; Calles, J.A.; Sanz, R.


Influence of the selective layer morphology on the permeation properties for Pd-PSS composite membranes prepared by electroless pore-plating: Experimental and modeling study

Calles, J. A.; Sanz, R.; Alique, D.; Furones, L.; Marín, P.; Ordoñez, S.


Review of supported Pd-based membranes prepartation by Electroless Plating for ultra-pure hydrogen production

Alique, D.; Martínez-Díaz, D.; Sanz, R.; Calles, J. A.


Production of Renewable Hydrogen from Glycerol Steam Reforming over Bimetallic Ni-(Cu,Co,Cr) Catalysts Supported on SBA-15 Silica

Carrero, A.; Calles, J.A.; García-Moreno, L.; Vizcaíno, A.J.


Hydrogen production through glycerol steam reforming using Co catalysts supported on SBA-15 doped with Zr, Ce and La

Carrero, A.; Vizcaíno, A. J.; Calles, J. A.; García-Moreno, L.


Comparison of ethanol steam reforming using Co and Ni catalysts supported on SBA-15 modified by Ca and Mg

Vizcaíno, A.J.; Carrero, A.; Calles, J.A.


Hydrogen production in a Pore-Plated Pd-membrane reactor: Experimental analysis and model validation for the Water Gas Shift reaction

Sanz, R.; Calles, J. A.; Alique, D.; Furones, L.; Ordóñez, S.; Marín, P.


Effect of Ce and Zr Addition to Ni/SiO2 Catalysts for Hydrogen Production through Ethanol Steam Reforming

Calles, J. A.; Carrero, A.; Vizcaíno, A. J.; Lindo, M.


Laboratorio virtual: solución de las ecuaciones de conservación mediante volúmenes finitos

Casado, C.; Schiave, E.; Calles, J. A.

  • @tic: revista d'innovaci educativa. Monogrfico: Innovacin Educativa en Ingeniera Qumica, 122-131 (2014)
  • doi:10.7203/attic.13.3905

Thermal stability and effect of typical water gas shift reactant composition on H2 permeability through a Pd-YSZ-PSS composite membrane

Calles, J. A.; Sanz, R.; Alique, D.; Furones, L.


H2 production via water gas shift in a composite Pd membrane reactor prepared by the pore-plating method

Sanz, R.; Calles, J. A.; Alique, D.; Furones, L.


Hydrogen production by glycerol steam reforming over SBA-15-supported nickel catalysts: Effect of alkaline earth promoters on activity and stability

Calles, J. A.; Carrero, A; Vizcaíno, A. J.; García-Moreno, L.


Modelling and simulation of permeation behaviour on Pd/PSS composite membranes prepared by "pore-plating" method

Sanz, R.; Calles, J. A.; Ordóñez, S.; Marín, P.; Alique, D.; Furones, L.


Hydrogen production by steam reforming of ethanol using Ni catalysts based on ternary mixed oxides prepared by coprecipitation

Vizcaíno, A. J.; Lindo, M.; Carrero, A.; Calles, J. A.


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