Programa de Doctorat en Enginyeria de Processos Químics: Recent submissions
Now showing items 21-40 of 137
Partial oxidation of methane into syngas at low temperature
(English) Syngas (a mixture of H2 and CO) is a versatile feedstock that can be used to produce a wide range of chemicals and fuels. For that reason, there is a great interest to optimize and explore new routes for its ...
Risk analysis of jet fires thermal effects
(English) The historical analysis performed has shown that jet fires have been the origin of a high number of domino effect accidents, both in the process industry and in the transportation of flammable fluids by pipelines ...
Lignocellulosic wastes and chitosan composites applied to recover rare earth elements by liquid-solid separation
(English) Rare earths elements (REE) are crucial elements to the future of technology, particularly to the power generation and road transport. One of the most sustainable processes to recover rare earths is biosorption. ...
Mechanochemical preparation of TiO2-based photocatalysts for hydrogen production
(English) Metal clusters and single atoms have been considered as effective cocatalysts for the enhancement of photocatalytic hydrogen production dueto their singular geometric structures, electronic properties and unique ...
Fire risk analysis framework at the wildland-urban interface
(English) Wildfires that reach the border between the wildland and urban areas, defined as the Wildland-Urban Interface (WUI), have rapidly expanded in frequency and severity over the past few decades, and the number of ...
Simulación y desarrollo de reactores catalíticos de membrana para la tecnología del hidrógeno
(English) This thesis focuses on the study of the catalytic production of hydrogen from methanol and water. Catalytic production is carried out in a catalytic membrane reactor which manages to produce and purify hydrogen. ...
In situ studies of catalytic processes by Near Ambient X-ray Photoelectron Spectroscopy
(English) Labels misplacement in the bottles are currently causing problems in wine cellar's labelling lines. According to data provided by Codorníu and Torres cellars, 1 % of the bottles present this issue. Once the wine ...
Recovery of polyphenols by extraction and purification technologies from orange and spinach processing residues
The residues resulting from orange and spinach processing, composed mainly by peels and seeds; and leaves, respectively, contain relevant amounts of polyphenols, so they can be used as raw material for recovery natural ...
Titanium dioxide and nanoshaped ceria for solar hydrogen production
This work facuses on the study of these processes on Ti02 and Ce02, respectively. Although the development of photocatalytic research with the use of semiconductor photocatalysts does not last longer than about 40 years, ...
Characteristics of bioactive molecules with antioxidant and biological activities of some medicinal and edible plants
The present work has focused on the study of two edible plants, with attributable medicinal values, named Anthyllis vulneraria L. (A.vulneraria) and Azadirachta indica L. (A.indica) collected in Tunisia and India, ...
Estudio de la evaporación de vertidos de disoluciones acuosas de amoníaco
Evaporation from liquid spills is a phenomenon of great importance. This phenomenon has been studied by a number of researchers. However, most of them have focused on the evaporation of pure liquid spills or hydrocarbon ...
Producción de hidrógeno a partir de amoniaco en reactores de paredes catalíticas
Due to the problems associated with the generation and storage of hydrogen in portable applications, the use of ammonia fer the on-site production of hydrogen through its catalytic decomposition has been proposed. This ...
Antioxidant properties and applications of pecan (Carya illinoinensis)
At the present time, the environmental challenges are the second concern on a global level, and the first one in some countries. This is one of the main reasons behind the recent boost of new methods of production within ...
Optimization strategies for efficient dosage of H2O2 in Fenton and photo-Fenton processes
This Thesis work addresses the challenge of designing hydrogen peroxide (H2O2) dosage Strategies for improving Fenton and photo-Fenton applications. The determination of the H2O2 dosage scheme that minimizes hydrogen ...
TiO2-based heterostructure photocatalysts for enhanced hydrogen production
The photocatalytic production of hydrogen from water and biomass derivatives such as ethanol, glycerol and sugars is a highly attractive strategy to generate environmentally benign hydrogen. Ethanol is more easily oxidized ...
A contribution to sustainable management of integrated material/energy networks in process industries
Towards sustainability forces process industries to change their traditional patterns. Therefore, efficient retrofitting has been a significant challenge and raised several issues, motivating the process system engineering ...
Synthesis and characterization of polycarbonates from epoxidized vegetable oils, propylene oxide and carbon dioxide
The current research is primarily focused on the preparation of a polycarbonate using epoxidized linseed oil (ELO) and epoxidized soybean oil (ESO) as feedstocks. The presence of unsaturation in vegetable oil structure ...
A contribution to chemical process operation support: new machine learning and surrogate models based approaches for process optimization, supervision and control
In the chemical process industry, the decision-making hierarchy is inherently model-based. The scale and complexity of the considered models (e.g., enterprise, plant or unit model) depend on the decision-making level (e.g., ...
Study on adsorption behavior of rare earth elements onto magnetic nanocomposites of carboxymethyl chitosan, alginate and novel biodegradable polyamide
Rare Earth Elements (REEs) are known as the remarkable components in many technologies that are driving the modern world. They are widely used in chemical engineering, permanent magnets, fluorescent lighting, sensors, cell ...
Rare earth elements recovery from E-wastes by solvent extraction and supported liquid membrane processes
Nowadays, rare earth elements (REEs) have gained importance due to their indispensable and critical use in many high-tech industries like hybrid cars, fluorescent lamps, flat screen televisions, mobile phones, disc drives ...
