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Selective absorption into a liquid is a widespread method to separate and concentrate SO2 from gas emissions, reducing air pollution and environmental risks. Process intensification was carried out using a ceramic membrane contactor as... more
Selective absorption into a liquid is a widespread method to separate and concentrate SO2 from gas emissions, reducing air pollution and environmental risks. Process intensification was carried out using a ceramic membrane contactor as equipment and using an ionic liquid as the absorption liquid. The membrane served as a barrier, thus, there was no direct contact between gas and liquid phases and the mass transfer occurred through the membrane. To minimize solvent losses caused by volatilization of the liquid, the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate was used as the absorption solvent and the results were compared to the N,N-dimethylaniline results. The influence of CO2 in the absorption was evaluated and the overall mass transfer coefficients were calculated.
Alternative materials are needed to tackle the sustainability of membrane fabrication in light of the circular economy, so that membrane technology keeps playing a role as sustainable technology in CO2 separation processes. In this work,... more
Alternative materials are needed to tackle the sustainability of membrane fabrication in light of the circular economy, so that membrane technology keeps playing a role as sustainable technology in CO2 separation processes. In this work, chitosan (CS)-based mixed matrix thin layers have been coated onto commercial polyethersulfone (PES) supports. The CS matrix was loaded by non-toxic 1-Ethyl-3-methylimidazolium acetate ionic liquid (IL) and/or laminar nanoporous AM-4 and UZAR-S3 silicates prepared without costly organic surfactants to improve CO2 permselectivity and mechanical robustness. The CO2/CH4 separation behavior of these membranes was evaluated experimentally at different feed gas composition (CO2/CH4 feed mixture from 20:80 to 70:30%), covering different separation applications associated with this separation. A cross-flow membrane cell model built using Aspen Custom Modeler was used to validate the process performance and relate the membrane properties with the target obje...
Carbon Capture Utilization and Storage technologies are essential mitigation options to reach net-zero CO2 emissions. However, this challenge requires the development of sustainable and economic separation technologies. This work presents... more
Carbon Capture Utilization and Storage technologies are essential mitigation options to reach net-zero CO2 emissions. However, this challenge requires the development of sustainable and economic separation technologies. This work presents a novel CO2 capture technology strategy based on non-dispersive CO2 absorption and membrane vacuum regeneration (MVR) technology, and employs two imidazolium ionic liquids (ILs), [emim][Ac] and [emim][MS], with different behavior to absorb CO2. Continuous absorption–desorption experiments were carried out using polypropylene hollow fiber membrane contactors. The results show the highest desorption behavior in the case of [emim][Ac], with a MVR performance efficiency of 92% at 313 K and vacuum pressure of 0.04 bar. On the other hand, the IL [emim][MS] reached an efficiency of 83% under the same conditions. The MVR technology could increase the overall CO2 capture performance by up to 61% for [emim][Ac] and 21% for [emim][MS], which represents an inc...
Many ionic liquids are soluble in water and their impact on the aquatic environment has to be evaluated. However, due to the large number of ionic liquids and the lack of experimental data, it is necessary to develop estimation procedures... more
Many ionic liquids are soluble in water and their impact on the aquatic environment has to be evaluated. However, due to the large number of ionic liquids and the lack of experimental data, it is necessary to develop estimation procedures in order to reduce the materials and time consumption. Quantitative structure–activity relationships (QSARs) are models that can be used to estimate the physicochemical and toxicological properties of molecules from the molecular structure or properties of similar compounds whose activities have already been assessed. In this work, a novel QSAR based on multiple linear regression is applied in order to estimate the ecotoxicity of ionic liquids, expressed as EC50 (Vibrio fischeri), involving 9 kind of cations and 17 anions. The range of log EC50 values covered by the novel QSAR is from -0.23 to 5.00. From the results, the influence of cations, anions and substitutions on the ecotoxicity of ionic liquids is established.
Membrane technology is a simple and energy-conservative separation option that is considered to be a green alternative for CO2 capture processes. However, commercially available membranes still face challenges regarding water and chemical... more
Membrane technology is a simple and energy-conservative separation option that is considered to be a green alternative for CO2 capture processes. However, commercially available membranes still face challenges regarding water and chemical resistance. In this study, the effect of water and organic contaminants in the feed stream on the CO2/CH4 separation performance is evaluated as a function of the hydrophilic and permselective features of the top layer of the membrane. The membranes were a commercial hydrophobic membrane with a polydimethylsiloxane (PDMS) top layer (Sulzer Chemtech) and a hydrophilic flat composite membrane with a hydrophilic [emim][ac] ionic liquid–chitosan (IL–CS) thin layer on a commercial polyethersulfone (PES) support developed in our laboratory. Both membranes were immersed in NaOH 1M solutions and washed thoroughly before characterization. The CO2 permeance was similar for both NaOH-treated membranes in the whole range of feed concentration (up to 250 GPU). ...
This research has been financially supported by the Ministry of Science and Innovation of Spain (MICINN) through the projects CTQ2010-16608 and ENE2010-14828.
Abstract A novel modelling and simulation framework on CO2 desorption process from post-combustion CO2 capture was developed by a coupled membrane vacuum regeneration technology (MVR) and four imidazolium ionic liquids (ILs) with... more
Abstract A novel modelling and simulation framework on CO2 desorption process from post-combustion CO2 capture was developed by a coupled membrane vacuum regeneration technology (MVR) and four imidazolium ionic liquids (ILs) with remarkably different viscosity values. The ILs 1-ethyl-3-methylimidazolium acetate ([emim][Ac]), 1-butyl-3-methylimidazolium acetate ([bmim][Ac]), 1-butyl-3- methylimidazolium isobutyrate ([bmim][i-but]), 1-butyl-3-methylimidazolium glycinate ([bmim][GLY]) were selected. COSMO based/Aspen Plus methodology was effectively implemented to estimate the physical and chemical CO2 absorption parameters by kinetic and thermodynamic models fitted to experimental data to design the regeneration process in Aspen Plus software. The membrane contactor unit for solvent regeneration was custom-built and successfully imported into the simulation tool, as no model library for the MVR existed yet in the commercial package for the steady state process flowsheet simulation. The effect on CO2 desorbed flux and process performance was evaluated for the comparison purpose between ILs at different operational conditions. High temperature, vacuum level and module length are beneficial to the solvent regeneration process, while low liquid flow-rate increases the CO2 desorption flux but also decrease the process performance. The viscosity, CO2 solubility and reaction enthalpy were identified as key thermodynamic properties of IL selection. The IL ([emim][Ac]) presented the highest regeneration performance (around 92% at 313 K and vacuum pressure of 0.04 bar) with a total energy consumption of 0.62 MJ·kgCO2-1, which is lower than conventional amino-based high temperature regeneration process (1.55 MJ·kgCO2-1). These results pointed out the interest of the membrane vacuum regeneration technology based on ILs compared to the conventional solvent-based thermal regeneration, but further techno-economic evaluation is further needed to ensure the competitiveness of this novel CO2 desorption approach to the large-scale application.
Removal of SO2 from gas emissions by selective absorption into a liquid is a common method to reduce air pollution and environmental risks. The absorption efficiency is determined by the interaction between the gases and the liquid. A... more
Removal of SO2 from gas emissions by selective absorption into a liquid is a common method to reduce air pollution and environmental risks. The absorption efficiency is determined by the interaction between the gases and the liquid. A great number of gas desulphurization methods have been developed where aqueous or organic solvents are used as sorbents.N,N-dimethylaniline (DMA) is an organic solvent used in the industry because its affinity with SO2. This absorption is neither too strong nor too weak, thus absorption and desorption can occur leading to a regenerative process where SO2 can be recovered. However, a direct contact between SO2 and DMA leads to several environmental problems caused by solvent evaporation and drops dragging into the gas stream.In order to increase the process efficiency and reduce environmental risks, a non-dispersive absorption process using hollow fibre membrane modules is developed in this work for a solvent zero emission process. The mass transfer int...
Wood can be considered as the main renewable raw material. Until now, the production of cellulose has been the main target of wood transformation. However, the other components, mainly hemicellulose and lignin, must be taken into account... more
Wood can be considered as the main renewable raw material. Until now, the production of cellulose has been the main target of wood transformation. However, the other components, mainly hemicellulose and lignin, must be taken into account for sustainable implementation of bio-refineries. The transition from low to high value added applications, specifically for lignin, requires the development of new separation processes. Supported ionic liquid membranes can be a promising option to separate and purify lignocellulosic components. The extraction from the feed phase to the stripping phase in only one stage allows the compaction of the system, without high energy demand. The main objective of this work was the analysis of the potential of supported ionic liquid membranes for lignin extraction and purification. [BMIM]MeSO4, [EMIM]EtSO4 and CYPHOS 108 were the ionic liquids chosen to impregnate PVDF membranes. The obtained results demonstrated that lignin can be extracted, but the SILMs w...
Sustainable Development has been introduced in the chemical engineering objectives related to processes, plants and systems. It is a model of progress that links economic development, protection of the environment and social... more
Sustainable Development has been introduced in the chemical engineering objectives related to processes, plants and systems. It is a model of progress that links economic development, protection of the environment and social responsibility [1]. This concept aims to harmonize the economical, social and environmental dimensions of the development strategies and it is now a key feature of the policy making in the European Union (EU). Sustainable Development is related to: balanced and equitable economic development; high levels of employment, social cohesion and inclusiveness; and a high level of environmental protection and responsible use of natural resources.
The chemistry and electrochemistry basic fields have been active for the last two decades of the past century studying how the modification of the electrodes’ surface by coating with conductive thin films enhances their electrocatalytic... more
The chemistry and electrochemistry basic fields have been active for the last two decades of the past century studying how the modification of the electrodes’ surface by coating with conductive thin films enhances their electrocatalytic activity and sensitivity. In light of the development of alternative sustainable ways of energy storage and carbon dioxide conversion by electrochemical reduction, these research studies are starting to jump into the 21st century to more applied fields such as chemical engineering, energy and environmental science, and engineering. The huge amount of literature on experimental works dealing with the development of CO2 electroreduction processes addresses electrocatalyst development and reactor configurations. Membranes can help with understanding and controlling the mass transport limitations of current electrodes as well as leading to novel reactor designs. The present work makes use of a bibliometric analysis directed to the papers published in the...
Semiconductor industry requires ultrapure chemicals to manufacture microelectronic devices. Hydrogen peroxide is one of the most demanded chemical by the semiconductor industry and ultrapurification processes are needed to achieve the... more
Semiconductor industry requires ultrapure chemicals to manufacture microelectronic devices. Hydrogen peroxide is one of the most demanded chemical by the semiconductor industry and ultrapurification processes are needed to achieve the electronic grade requirements for this chemical. Among all the ultrapurification alternatives, reverse osmosis emerges as the most desirable option according to environmentally friendly criteria. Through modelling based on membrane transport equations and mass balances, different integrated reverse osmosis membrane cascades have been previously optimized. All the optimal solutions were characterized by the maximum allowed values for the applied pressures in the reverse osmosis stages, corresponding to the highest energy consumption and the lowest energy productivity (expressed as economic profit of the process for each unit of energy consumed). In this work, the energy productivity of the process was maximized and the optimal operation conditions were ...
The fractionation of a protein hydrolysate obtained from tuna processing by-products by means of a membrane cascade integrating ultrafiltration (UF) and nanofiltration (NF) membranes was proposed in order to separate and purify the... more
The fractionation of a protein hydrolysate obtained from tuna processing by-products by means of a membrane cascade integrating ultrafiltration (UF) and nanofiltration (NF) membranes was proposed in order to separate and purify the protein fraction between 1 and 4 kDa, which is the most interesting for nutraceutical purposes. A simulation model, based on mass balances and empirical equations for describing permeate flux and rejection of protein fractions, was developed and complemented with a simple cost estimation model. The product purity (49.3 %) and the process yield (62.6 %) were independent of the total water consumption of the process, but high water consumptions were required to maintain the total protein content of the stream below upper bounds that assured the absence of membrane clogging. The implementation of a water recovery system, based on an additional tight NF stage, implied improvements in both environmental and economic aspects of the process.
The effective separation of CO2 and CH4 mixtures is essential for many applications, such as biogas upgrading, natural gas sweetening or enhanced oil recovery. Membrane separations can contribute greatly in these tasks, and innovative... more
The effective separation of CO2 and CH4 mixtures is essential for many applications, such as biogas upgrading, natural gas sweetening or enhanced oil recovery. Membrane separations can contribute greatly in these tasks, and innovative membrane materials are being developed for this gas separation. The aim of this work is the evaluation of the potential of two types of highly CO2-permeable membranes (modified commercial polydimethylsiloxane and non-commercial ionic liquid–chitosan composite membranes) whose selective layers possess different hydrophobic and hydrophilic characteristics for the separation of CO2/CH4 mixtures. The study of the technical performance of the selected membranes can provide a better understanding of their potentiality. The optimization of the performance of hollow fiber modules for both types of membranes was carried out by a “distance-to-target” approach that considered multiple objectives related to the purities and recovery of both gases. The results demo...
Postcombustion carbon capture (PCC) using membrane technology is a rising alternative to PCC processes that are based on conventional equipment, such as CO2 absorption–desorption in packed columns,...
The chemistry and electrochemistry basic fields have been active since the last two decades of the past century studying how surface modification of electrodes by coating with conductive films enhances their activity and performance. In... more
The chemistry and electrochemistry basic fields have been active since the last two decades of the past century studying how surface modification of electrodes by coating with conductive films enhances their activity and performance. In the light of the development of alternative sustainable ways of energy storage and carbon dioxide conversion by electrochemical processes, these research studies have jumped in the 21st century to more applied fields such as chemical engineering, energy and environmental science and engineering. The huge amount of literature on experimental works dealing with the development of CO2 electroreduction processes addresses electrocatalyst development. Membranes can help understanding and controlling the mass transport limitations of current electrodes and reactors designs. The present bibliometric review addresses the papers published in the 21st century regarding membrane coated electrodes and electrocatalysts to enhance electrochemical reactor performan...
In this work, the membrane vacuum regeneration (MVR) process was considered as a promising technology for solvent regeneration in post-combustion CO2 capture and utilization (CCU) since high purity CO2 is needed for a technical... more
In this work, the membrane vacuum regeneration (MVR) process was considered as a promising technology for solvent regeneration in post-combustion CO2 capture and utilization (CCU) since high purity CO2 is needed for a technical valorization approach. First, a desorption test by MVR using polypropylene hollow fiber membrane contactor (PP-HFMC) was carried out in order to evaluate the behavior of physical and physico-chemical absorbents in terms of CO2 solubility and regeneration efficiency. The ionic liquid 1-ethyl-3-methylimidazolium acetate, [emim][Ac], was presented as a suitable alternative to conventional amine-based absorbents. Then, a rigorous two-dimensional mathematical model of the MVR process in a HFMC was developed based on a pseudo-steady-state to understand the influence of the solvent regeneration process in the absorption–desorption process. CO2 absorption–desorption experiments in PP-HFMC at different operating conditions for desorption, varying vacuum pressure and t...
Lignin is one of the three main components of lignocellulosic biomass and must be considered a raw material with attractive applications from an economic and ecological point of view. Therefore, biorefineries must have in mind the most... more
Lignin is one of the three main components of lignocellulosic biomass and must be considered a raw material with attractive applications from an economic and ecological point of view. Therefore, biorefineries must have in mind the most adequate processing to obtain high-quality lignin and the separation tasks that play a key role to improve the purity of the lignin. Separation techniques based on membranes are a promising way to achieve these requirements. In this work, the separation performance of the SILM (Supported Ionic Liquid Membrane) formed with [BMIM][DBP] as IL (Ionic Liquid) and PTFE as membrane support was compared to a nanofiltration (NF) membrane (NP010 by Microdyn-Nadir) and two ultrafiltration (UF) membranes (UF5 and UF10 by Trisep). The SILM showed selective transport of Kraft lignin, lignosulphonate, xylose, and glucose in aqueous solutions. Although it was stable under different conditions and its performance was improved by the integration of agitation, it was no...
ABSTRACT The present work is focused on three main aims. The first one is the comparison of commercial polyamide (BE from Woongjin Chemical) and cellulose acetate (CE from GE Osmonics) reverse osmosis membranes when applied to the... more
ABSTRACT The present work is focused on three main aims. The first one is the comparison of commercial polyamide (BE from Woongjin Chemical) and cellulose acetate (CE from GE Osmonics) reverse osmosis membranes when applied to the ultrapurification of aqueous hydrogen peroxide solutions. The second one is the search for possible advantages of combination of both types of membranes, which show quite different characteristics, under a hybrid cascade configuration. The results demonstrated that the employment of only polyamide membrane cascades is more competitive than hybrid systems for this application. The third one is the analysis of the influence of the product quality over the optimal economic cascades. The polyamide membrane systems were then formulated adding product quality metrics to economic criteria to afford a bicriteria nonlinear programming (NLP) problem. The Pareto solutions to the multiobjective problem were generated via the epsilon constraint method. On the one hand, maximum economic profit solutions corresponded with the configurations applying bypass. On the other hand, maximum quality solutions were obtained by low recovery rates (specifically in the last stages of the cascade).
Lignin valorization is a key aspect to design sustainable management systems for lignocellulosic biomass. The successful implementation of bio-refineries requires high value added applications for the chemicals derived from lignin.... more
Lignin valorization is a key aspect to design sustainable management systems for lignocellulosic biomass. The successful implementation of bio-refineries requires high value added applications for the chemicals derived from lignin. Without effective separation processes, the achievement of this purpose is difficult. Supported ionic liquid membranes can play a relevant role in the separation and purification of lignocellulosic components. This work investigated different supported ionic liquid membranes for selective transport of two different types of technical lignins (Kraft lignin and lignosulphonate) and monosaccharides (xylose and glucose) in aqueous solution. Although five different membrane supports and nine ionic liquids were tested, only the system composed by [BMIM][DBP] as an ionic liquid and polytetrafluoroethylene (PTFE) as a membrane support allowed the selective transport of the tested solutes. The results obtained with this selective membrane demonstrated that lignins...
A bibliometric analysis based on Scopus database was performed to identify the global research trends related to Supported Ionic Liquid Membranes (SILMs) during the time period from 1995 to 2015. This work tries to improve the... more
A bibliometric analysis based on Scopus database was performed to identify the global research trends related to Supported Ionic Liquid Membranes (SILMs) during the time period from 1995 to 2015. This work tries to improve the understanding of the most relevant research topics and applications. The results from the analysis reveal that only after 2005 the research efforts focused on SILMs became significant, since the references found before that year are scarce. The most important research works on the four main application groups for SILMs defined in this work (carbon dioxide separation, other gas phase separations, pervaporation and liquid phase separations) were summarized in this paper. Carbon dioxide separation appeared as the application that has received by far the most attention according to the research trends during the analysed period. Comments about other significant applications that are gaining attention, such as the employment of SILMs in analytical tasks or their co...
ABSTRACT A bibliometric analysis based on the Web of Science database was carried out to identify the global research related to arsenic in the drinking water field from 1992 to 2012 and to improve the understanding of the research trends... more
ABSTRACT A bibliometric analysis based on the Web of Science database was carried out to identify the global research related to arsenic in the drinking water field from 1992 to 2012 and to improve the understanding of the research trends in the same period. The results from the analysis reveal a linearly increasing number of annual publications and a high effort to find effective technical solutions to the problems caused by the presence of arsenic in water. The most relevant research aspects of the four main technologies applied to arsenic removal from drinking water (coagulation, flocculation and precipitation followed by filtration; adsorption and ion exchange; membrane-based processes and biological treatments) were summarized in this paper, with adsorption appearing to be the alternative that has received most attention according to the research trends during the studied period.
Abstract Ultrafiltration and nanofiltration can be very useful technologies to fractionate the different protein fractions obtained after hydrolysis of fish by-products. Simple empirical transport equations derived from experimental data... more
Abstract Ultrafiltration and nanofiltration can be very useful technologies to fractionate the different protein fractions obtained after hydrolysis of fish by-products. Simple empirical transport equations derived from experimental data were obtained and a process simulation model was developed and employed for the identification of the optimal design and operation conditions to maximize the product purity or the process yield. More complex scenario appeared when other objectives were added to the optimization problem, including economic considerations, such as the total costs of the process, or environmental considerations, such as the total freshwater consumption by the system. Limitations to the total costs implied reduced membrane area in the UF stages and, consequently, lower process yields. Freshwater consumption could be reduced without worsening product purity or process yield, but limits should be imposed in order to avoid excessive protein contents that would cause problems related to membrane clogging.
ABSTRACT Arsenic is one of the most serious inorganic contaminants in drinking water on a worldwide scale. To comply with the MCL (maximum contaminant level, 10 μg/l arsenic in drinking water) established by the World Health Organization,... more
ABSTRACT Arsenic is one of the most serious inorganic contaminants in drinking water on a worldwide scale. To comply with the MCL (maximum contaminant level, 10 μg/l arsenic in drinking water) established by the World Health Organization, numerous techniques have been studied, such as ion exchange, coagulation and flocculation, precipitation, adsorption and membrane technologies. Among the available technologies applicable to water treatment, membrane filtration has been identified as a promising technology to remove arsenic from water.
Publisher Summary This chapter discusses the reaction variables: sulfursulfursulfur dioxide (SO 2 ) concentration and temperature and relative humidity that influence the kinetic behavior of the solids produced by slurrying fly ash with... more
Publisher Summary This chapter discusses the reaction variables: sulfursulfursulfur dioxide (SO 2 ) concentration and temperature and relative humidity that influence the kinetic behavior of the solids produced by slurrying fly ash with calcium dioxide Ca(OH) 2 , testing for reactivity toward SO 2 in a packed-bed reactor. The influences of these variables are examined by solving the differential equations to describe the system with two proposed kinetic expressions, obtaining the optimized parameters values that fit the experimental results. The direct injection of dry sorbents into the flue gas duct offers a good alternative for controlling sulfursulfursulfur dioxide emissions at low temperature with a technology relatively simple compared to semi-dry or wet methods. Coal combustion fly ash, mixed with Ca(OH) 2 has an increasing utilization as flue gas desulfurization (FGD) solid sorbents with potential use as reagent for in-duct injection systems. Kinetic experiments are performed in a fixed-bed reactor at different temperatures, concentration of SO 2, and humidities as reaction conditions. The experimental kinetic results are fitted to two kinetic models for the reaction rate.
Publisher Summary This chapter discusses the kinetic study on low temperature and dry flue gas desulfursulfursulfurization. The thermobalance experiments observes the reaction kinetics under differential conditions by recording the weight... more
Publisher Summary This chapter discusses the kinetic study on low temperature and dry flue gas desulfursulfursulfurization. The thermobalance experiments observes the reaction kinetics under differential conditions by recording the weight change during the reaction of calcium oxide (Ca(OH) 2 ) with sulfur dioxide (SO 2 ). The low sample weights between 3 and 17 mg are used, and the reaction conditions are not differential during the first ten seconds. To distinguish between the weight gain by water adsorption and the weight gain by the SO 2 -reaction, the samples are first exposed to a H 2 O/N 2 /air mixture with the same humidity as the flue gas. Part of the N 2 is replaced by CO 2 and SO 2 to form synthetic flue gas. The investigated parameters are humidity, temperature, SO 2 -concentration, and the presence of carbon dioxide (CO 2 ).
Publisher Summary This chapter discusses the simulation of flue gas desulfurization (FGD) in-duct injection technology using complex kinetic models. The chapter discusses the computer aided simulation of an entrained flow reactor... more
Publisher Summary This chapter discusses the simulation of flue gas desulfurization (FGD) in-duct injection technology using complex kinetic models. The chapter discusses the computer aided simulation of an entrained flow reactor operating under typical conditions of FGD in-duct injection at low temperatures. The modeling was performed considering the gas–solid reaction in a single particle of sorbent that is moving as well as the gas phase at any axial distance of the duct. The overall reaction rate is calculated from the transport resistance through the ash layer and the chemical reaction taking place at a sharp moving interface in the radial axis of the particle. The experimental profiles of the SO 2 concentration in the external gas phase obtained in a pilot plant of in-duct-injection of Ca(OH) 2 were introduced to the simulation to estimate the parameters of the reaction under study, working at different calcium/sulfur molar ratios. The proposed model allows describing the SO 2 removal and the solid conversion levels when varying the residence time in the duct, in good agreement with the experimental values.
The aim of this case study is to develop a process model including both heat integration and separation processes by means of ASPEN PLUS simulation software. Previous studies have attempted to develop kinetic models or to retrieve optimal... more
The aim of this case study is to develop a process model including both heat integration and separation processes by means of ASPEN PLUS simulation software. Previous studies have attempted to develop kinetic models or to retrieve optimal policies for operating the process multitubular catalytic fixed-bed reactor. This time a rigorous model is developed in ASPEN CUSTOM MODELER and exported
Ionic Liquids have been suggested as one of the main possibilities to avoid solvent losses in chemical processes, but toxicity needs to be evaluated before technical applications. A quantitative structure-activity relationship (QSAR)... more
Ionic Liquids have been suggested as one of the main possibilities to avoid solvent losses in chemical processes, but toxicity needs to be evaluated before technical applications. A quantitative structure-activity relationship (QSAR) based on a hybrid molecular QSAR model has ...
Page 1. 20th European Symposium on Computer Aided Process Engineering – ESCAPE20 S. Pierucci and G. Buzzi Ferraris (Editors) © 2010 Elsevier BV All rights reserved. Intensification of Sulfur Dioxide Absorption: Environmental and Economic... more
Page 1. 20th European Symposium on Computer Aided Process Engineering – ESCAPE20 S. Pierucci and G. Buzzi Ferraris (Editors) © 2010 Elsevier BV All rights reserved. Intensification of Sulfur Dioxide Absorption: Environmental and Economic Optimization ...

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