BackExaminar Artículos por departamento (eus.) "Ingeniaritza kimikoa"
Now showing items 1-20 of 248
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A comparative thermodynamic study on the CO2 conversion in the synthesis of methanol and of DME
; ; ; ; Aguayo Urquijo, Andrés Tomás
; (Elsevier, 2017-02-01)
A thermodynamic approach of the synthesis processes of methanol and DME from H2+CO+CO2 has been conducted, in order to compare the feasibility of incorporating CO2 in the feed of both processes. The effects of reaction ... -
A comprehensive review of primary strategies for tar removal in biomass gasification
Cortázar Dueñas, María; Santamaría Moreno, Laura ; López Zabalbeitia, Gartzen ; ; ; ; ; Olazar Aurrecoechea, Martin (Elsevier, 2023-01)
In the current energy scenario, the production of heat, power and biofuels from biomass has become of major interest. Amongst diverse thermochemical routes, gasification has stood out as a key technology for the large-scale ... -
A Data-Driven Reaction Network for the Fluid Catalytic Cracking of Waste Feeds
; Hita del Olmo, Idoia; ; Arandes Esteban, José María ; (MDPI, 2018-11-27)
Establishing a reaction network is of uttermost importance in complex catalytic processes such as fluid catalytic cracking (FCC). This step is the seed for a faithful reactor modeling and the subsequent catalyst re-design, ... -
A Hybrid FCC/HZSM-5 Catalyst for the Catalytic Cracking of a VGO/Bio-Oil Blend in FCC Conditions
Ibarra, Álvaro; Hita del Olmo, Idoia; Arandes Esteban, José María ; (MDPI, 2020)
The performance of a commercial FCC catalyst (designated as CY) and a physically mixed hybrid catalyst (80 wt.% CY and 20 wt.% HZSM-5-based catalyst, designated as CH) have been compared in the catalytic cracking of a ... -
A model for predicting the performance of a batch fountain confined spouted bed dryer at low and moderate temperatures
; Pablos Castro, Aitor; Tellabide Vecina, Mikel ; ; ; ; Olazar Aurrecoechea, Martin (Elsevier, 2022-06)
Spouted bed dryers are well known for their high efficiency at low and moderate temperatures. The design of industrial scale dryers requires the estimation of heat and mass transfer coefficients, but there is hardly any ... -
A novel alternative method for pistachio nuts splitting using conical spouted beds
; ; Tellabide Vecina, Mikel; ; ; Olazar Aurrecoechea, Martin (Elsevier, 2023-12)
Closed shell pistachio nuts must be split for their commercialisation, which is conducted in processing plants designed on purpose. Given that current industrial processes have limitations, and pistachio is a booming ... -
A Preliminary Study on the Use of Highly Aromatic Pyrolysis Oils Coming from Plastic Waste as Alternative Liquid Fuels
; ; ; ; ; ; ; ; López Urionabarrenechea, Alexander (MDPI, 2023-09-20)
In this work, the low-temperature pyrolysis of a real plastic mixture sample collected at a WEEE-authorised recycling facility has been investigated. The sample was pyrolysed in a batch reactor in different temperature and ... -
A review on the valorization of CO2. Focusing on the thermodynamics and catalyst design studies of the direct synthesis of dimethyl ether
; ; ; Aguayo Urquijo, Andrés Tomás; (Elsevier, 2022-08)
The direct synthesis of dimethyl ether (DME) on bifunctional catalysts is highly attractive for valorizing CO2 and syngas derived from biomass gasification and is a key process to reduce greenhouse gas emissions. DME economy ... -
A six-lump kinetic model for HDPE/VGO blend hydrocracking
; ; ; ; ; Arandes Esteban, José María; Gutiérrez Lorenzo, Alazne (Elsevier, 2023-02)
A six lump-based kinetic model has been developed for the hydrocracking of high-density polyethylene (HDPE) blended with vacuum gas oil (VGO) over a PtPd/HY zeolite catalyst. The blend (20 wt% HDPE and 80 wt% VGO) has been ... -
A study on the impact of the reaction mechanism of the thermochemical activation of bone char (by pyrolysis and carbonization)
Sierra García, Irene; ; ; (Elsevier, 2023-05)
Porous materials based on bioapatite were prepared through the thermochemical activation of pork bone char, using different reagents (H2SO4 and K2CO3), heating atmosphere (inert and oxidizing) and activation temperature. ... -
A techno-economic and life cycle assessment for the production of green methanol from CO2: catalyst and process bottlenecks
; ; ; ; ; ; Aguayo Urquijo, Andrés Tomás; ; (Elsevier, 2022-05)
The success of catalytic schemes for the large-scale valorization of CO2 does not only depend on the development of active, selective and stable catalytic materials but also on the overall process design. Here we present ... -
Activity and stability of different Fe loaded primary catalysts for tar elimination
Cortázar Dueñas, María; ; ; Santamaría Moreno, Laura ; López Zabalbeitia, Gartzen ; ; ; Olazar Aurrecoechea, Martin (Elsevier, 2022-06)
[EN] The performance of olivine, dolomite and gamma-alumina primary catalysts was evaluated in the continuous tar elimination process in which toluene was selected as the biomass gasification tar model compound. Iron was ... -
Aftertreatment DeNOx Systems for Future Light Duty Lean-Burned Emission Regulations
(MDPI, 2021-02-01)Future light duty vehicles in Europe and the United States are required to be certified, owing to progressively more and more stringent regulations [...] -
Aging studies on dual function materials Ru/Ni-Na/Ca-Al2O3 for CO2 adsorption and hydrogenation to CH4
(Elsevier, 2022-06)Integrated CO2 capture and utilization (ICCU) is a promising alternative to revalue CO2. In this work, the influence of the aging process on dual function materials (DFMs) Ru/Ni-Na/Ca-Al2O3, for the conversion of CO2 into ... -
Alternative acid catalysts for the stable and selective direct conversion of CO2/CO mixtures into light olefins
; ; ; ; Aguayo Urquijo, Andrés Tomás (Elsevier, 2022-12)
Different acid catalysts (silicoaluminophosphates (SAPOs) -34, −18, and − 11, and HZSM-5 zeolite) were tested as components of In2O3-ZrO2/acid tandem catalysts in the direct synthesis of light olefins by hydrogenation of ... -
Aluminum extraction from a metallurgical industry sludge and its application as adsorbent
; ; Epelde Bejerano, Eva; (Elsevier, 2021-05-12)
The aluminum industry produces a high number of wastes that are concentrated in the sludge of their water treatment plants. This sludge is rich in aluminum, which could be extracted and purified. In this work, three ... -
An insight into the reactions occurring during the chemical activation of bone char
; ; ; Sierra García, Irene (Elsevier, 2014-04-24)
The valorisation of animal wastes by pyrolysis has shown to be of interest, due to the versatility of the main compound of char, hydroxyapatite (HAP), which can be used in catalysis, electrochemistry, and adsorption. The ... -
Analysis and Economic Evaluation of the Use of Recycled Polyamide Powder in Masonry Mortars
(MDPI, 2020-11-11)Due to the considerable amount of waste plastics and polymers that are produced annually, the introduction of these waste products in construction materials is becoming a recurrent solution to recycle them. Among polymers, ... -
Analysis of hydrogen production potential from waste plastics by pyrolysis and in line oxidative steam reforming
Cortázar Dueñas, María; ; ; ; López Zabalbeitia, Gartzen ; ; Santamaría Moreno, Laura ; ; Olazar Aurrecoechea, Martin (Elsevier, 2022-01)
[EN] A study was carried out on the valorization of different waste plastics (HDPE, PP, PS and PE), their mixtures and biomass/HDPE mixtures by means of pyrolysis and in line oxidative steam reforming. A thermodynamic ... -
Analysis of Pyrolysis Kinetic Parameters Based on Various Mathematical Models for More than Twenty Different Biomasses: A Review
(MDPI, 2022-09-07)Today, energy use is an important and urgent issue for economic development worldwide. It is expected that raw material in the form of biomass and lignocellulosic residues will become increasingly significant sources of ...