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Littérature scientifique sur le sujet « Adsorption optimization »

Auteur : Grafiati

Publié le 16 janvier 2024

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Articles de revues sur le sujet "Adsorption optimization"

Adewoye, LT, SI Mustapha, AG Adeniyi, JO Tijani, MA Amoloye et LJ Ayinde. « OPTIMIZATION OF NICKEL (II) AND CHROMIUM (III) REMOVAL FROM CONTAMINATED WATER USING SORGHUM BICOLOR ». Nigerian Journal of Technology 36, n^o 3 (30 juin 2017) : 960–72. http://dx.doi.org/10.4314/njt.v36i3.41.

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A central composite design (CCD) under the response surface methodology (RSM)was used to study the effect of three adsorption variables (pH, initial concentration, and adsorbent dosage) in order to determine the optimum process conditions for the adsorptions of Ni (II) and Cr (III) onto sulphuric acid modified sorghum bicolor activated carbon (SBAC).This study yielded removal efficiency of 98.89 % for Ni (II) and 94.27 % for Cr (III) ion under optimal conditions of pH (8), initial metal ion concentration (25 mg/L), adsorbent dosage (10 mg) and pH (7), initial metal ion concentration (5 mg/L), dosage (15 mg);respectively. Statistical analysis of variance results showed a good correlation existed between the experimental and predicted data with R2 values of 0.99 for Ni and 0.98 for Cr. The equilibrium data for Ni (II) adsorption was best described using Freundlich model while Langmuir model best fit Cr (III) adsorption. The mechanism of adsorption for both Ni and Cr adsorptions on SBAC followed Pseudo second order kinetic model.Â Â http://dx.doi.org/10.4314/njt.v36i3.41

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Gugushe, Aphiwe Siyasanga, Azile Nqombolo et Philiswa N. Nomngongo. « Application of Response Surface Methodology and Desirability Function in the Optimization of Adsorptive Remediation of Arsenic from Acid Mine Drainage Using Magnetic Nanocomposite : Equilibrium Studies and Application to Real Samples ». Molecules 24, n^o 9 (9 mai 2019) : 1792. http://dx.doi.org/10.3390/molecules24091792.

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A magnetic multi-walled carbon nanotube/zeolite nanocomposite was applied for the adsorption and removal of arsenic ions in simulated and real acid mine drainage samples. The adsorption mechanism was investigated using two-parameter (Langmuir, Freundlich, Temkin) and three-parameter (Redlich–Peterson, and Sips) isotherm models. This was done in order to determine the characteristic parameters of the adsorptive removal process. The results showed that the removal process was described by both mono- and multilayer adsorptions. Adsorption studies demonstrated that a multi-walled carbon nanotube/zeolite nanocomposite could efficiently remove arsenic in simulated samples within 35 min. Based on the Langmuir isotherm, the adsorption capacity for arsenic was found to be 28 mg g−1. The nanocomposite was easily separated from the sample solution using an external magnet and the regeneration was achieved by washing the adsorbent with 0.05 mol L−1 hydrochloric acid solution. Moreover, the nanoadsorbent was reusable for at least 10 cycles of adsorption-desorption with no significant decrease in the adsorption capacity. The nanoadsorbent was also used for the arsenic removal from acid mine drainage. Overall, the adsorbent displayed excellent reusability and stability; thus, they are promising nanoadsorbents for the removal of arsenic from acid mine drainage.

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Aristov, Yuriy I., Ivan S. Glaznev et Ilya S. Girnik. « Optimization of adsorption dynamics in adsorptive chillers : Loose grains configuration ». Energy 46, n^o 1 (octobre 2012) : 484–92. http://dx.doi.org/10.1016/j.energy.2012.08.001.

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Sujatha, S., R. Sivarethinamohan, A. Oorkalan, V. Senthilkumar, B. Anuradha, B. Veluchamy, P. Prabhu, Magda H. Abdellattif et Abdulmohsen Khalaf Dhahi Alsukaibi. « Exclusion of Chromium(VI) Ion in Grueling Activated Carbon Fabricated from Manilkara zapota Tree Wood by Adsorption : Optimization by Response Surface Methodology ». Journal of Nanomaterials 2022 (23 avril 2022) : 1–9. http://dx.doi.org/10.1155/2022/8157815.

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The current paper makes obvious the elimination of chromium(VI) ion, from wastewater via adsorption technique with activated carbon generated from Manilkara zapota tree (MZTWAC). Preliminarily MZTWAC has undergone characterization studies which uncovered the suitability of MZTWAC to expel chromium(VI) from aqueous solution. Batch adsorption experimentation was premeditated with the competence of central composite design (CCD) and it was executed. Response surface methodology (RSM) was the key optimization software to appraise the adsorptive chattels of MZTWAC engaged in removing chromium(VI) ion in aqueous solution which explored the interactions flanked between four expounding variables explicitly initial concentration of chromium(VI) ion, pH of the solution, MZTWAC dose and time of exposure, and contact time. The response variable that was concentrated in the study was adsorption capacity. It was deduced a polynomial in quadratic equation was documented amid the adsorption capacity and variables influencing the adsorption with R 2 = 0.9792 which was projected as the best suit for the adsorption process. ANOVA that is expanded as analysis of variance judged the connotation of adsorption process variables. 0.2 g of MZTWAC dosage has removed 87.629% chromium(VI) from aqueous solution. The enhancement of adsorption process reclined on the attainment of maximum adsorption capacity which further depends on the optimization of variables under consideration. This criterion was accomplished by the desirability function optimizing the process variables.

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Jin, Xue Yuan, Hong Liu et San Fu Zhu. « Optimization for Purification Technology of Platycodins by Macroreticular Resin ». Advanced Materials Research 781-784 (septembre 2013) : 852–55. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.852.

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In order to purify the platycodins from Platycodon grandiflorum, AB-8 macroporous resin was used to test. Based on single factor experiments, orthogonal test was used to optimum the purification conditions. Adsorption pH, adsorption temperature, adsorption time and platycodins concentration were as factors and adsorption capacity was as index. The results were as follows: adsorption pH 6.0, adsorption temperature 40°C, adsorption tim110min, platycodins concentration 2.0mg/mL were the optimization conditions.The adsorption quantity reached at 39.1mg/g. So AB-8 macroporous resin was a suitable resin for purify the platycodins from Platycodon grandiflorum.

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Mobed, M., et T. M. S. Chang. « Adsorption of chitin derivatives onto liposomes : Optimization of adsorption conditions ». Journal of Microencapsulation 15, n^o 5 (janvier 1998) : 595–607. http://dx.doi.org/10.3109/02652049809008243.

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Akulinin, E. I., A. A. Ishin, S. A. Skvortsov, D. S. Dvoretsky et S. I. Dvoretsky. « Optimization of Adsorption Processes with Cyclic Variable Pressure in Gas Mixture Separation ». Advanced Materials & ; Technologies, n^o 3 (2017) : 051–60. http://dx.doi.org/10.17277/amt.2017.03.pp.051-060.

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Hassan, M. M., K. F. Loughlin et M. E. Biswas. « Optimization of continuous countercurrent adsorption systems ». Separations Technology 6, n^o 1 (février 1996) : 19–27. http://dx.doi.org/10.1016/0956-9618(95)00137-9.

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Ko, Daeho, et Il Moon. « Multiobjective Optimization of Cyclic Adsorption Processes ». Industrial & ; Engineering Chemistry Research 41, n^o 1 (janvier 2002) : 93–104. http://dx.doi.org/10.1021/ie010288g.

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Asanu, Mohammed, Dejene Beyene et Adisu Befekadu. « Removal of Hexavalent Chromium from Aqueous Solutions Using Natural Zeolite Coated with Magnetic Nanoparticles : Optimization, Kinetics, and Equilibrium Studies ». Adsorption Science & ; Technology 2022 (5 juillet 2022) : 1–22. http://dx.doi.org/10.1155/2022/8625489.

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Stringent discharge limits, high costs, and low removal efficiency of the conventional treatment methods are facing challenges to handle industrial effluents containing heavy metals. The objective of this study was to use a recoverable magnetic zeolite to remove Cr(VI) from aqueous solution. The study investigated the application of nanotechnology to improve surface properties, recoverability, and adsorptive capacity of natural zeolite and the CCD-RSM-based optimization of adsorption process variables. Natural zeolites coated with various fractions of magnetic nanoparticles (25%, 33.33%, 50%, and 75%) were investigated for surface characters, adsorption capacity, removal efficiency, and recoverability. Natural zeolite coated with 33.33% (MZ33) was found a better adsorbent in terms of surface characters, adsorption capacity, and removal efficiency. Thirty batch adsorption experiments designed with CCD were carried out in order to optimize adsorption process variables using response surface methodology (RSM). It was found that adsorbent dose = 2 g / L , contact time = 75 min , initial Cr VI concentration = 10 mg / L , and solution pH = 1.5 were the optimum conditions to achieve 93.57% Cr(VI) removal, which is very close to the experimental result of 94.88%. The adsorption isotherm determined from the operating parameters revealed that experimental data fit to the Langmuir isotherm model with R 2 = 0.9966 and maximum adsorption capacity = 43.933 mg / g . This proved that the adsorption of Cr(VI) on magnetic zeolite involved monolayer adsorption on the active sites. The separation factor, R L , value lies between 0 and 1 indicating that adsorption of Cr(VI) on the magnetic zeolite is favorable. The adsorption kinetics study follows pseudo-first order in the removal of Cr(VI). FTIR analysis of magnetic zeolite revealed the presence of numerous functional groups participating in Cr(VI) adsorption. The current study confirmed that magnetic zeolite is a cost-effective and favorable material for the removal of Cr(VI) from aqueous solution.

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Thèses sur le sujet "Adsorption optimization"

Vetukuri, Sree Rama Raju. « Advanced Optimization Strategies for Periodic Adsorption Processes ». Research Showcase @ CMU, 2011. http://repository.cmu.edu/dissertations/30.

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Periodic Adsorption Processes (PAPs) have gained increasing commercial importance asan energy-efficient separation technique over the past two decades. Based on fluid-solidinteractions, these systems never reach steady state. Instead they operate at cyclic steadystate, where the bed conditions at the beginning of the cycle match with those at the endof the cycle. Nevertheless, optimization of these processes remains particularly challenging,because cyclic operation leads to dense Jacobians, whose computation dominatesthe overall cost of the optimization strategy. In order to efficiently handle these Jacobiansduring optimization and reduce the computation time, this work presents newcomposite step trust-region algorithms based on sequential quadratic programming andinterior point methods for the solution of minimization problems with both nonlinearequality and inequality constraints. Instead of forming and factoring the dense constraintJacobian, these algorithms approximate the Jacobian of equality constraints with a specializedquasi-Newton method. Hence, they are well suited to solve optimization problemsrelated to PAPs. In addition to allowing inexactness of the Jacobian and its null-spacerepresentation, the algorithm also provides exact second order information in the formof Hessian-vector products to improve the convergence rate. The resulting approachalso combines automatic differentiation and more sophisticated integration algorithms toevaluate the direct sensitivity and adjoint sensitivity equations. Numerical performance results on small scale PAP problems and CUTEr problems show significant reduction incomputation time. Furthermore, we propose a systematic methodology to design PSA cycles using asuperstructure based approach. The superstructure is rich enough to predict a numberof different PSA operating steps, and their optimal sequence is obtained by solving anoptimal control problem. PSA is a potential technology for pre-combustion CO2 capturebecause of low operating costs and high performance. We utilize the superstructureapproach to synthesize PSA cycles for this purpose which can separate both H2 andCO2 at high purity and operate with a low power consumption of 86 kWh/tonne of CO2captured.

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Verde, Trindade María. « MODELLING AND OPTIMIZATION OF AN ADSORPTION COOLING SYSTEM FOR AUTOMOTIVE APPLICATIONS ». Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/54120.

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[EN] This PhD study deals with the modelling of an adsorption system designed to provide air conditioning for vehicles, and is driven by the waste heat available from the water/glycol cooling circuit of the engine. The system is based on the sequential heating/cooling of two sorption beds containing a solid sorption material which desorbs or adsorbs water vapour. The condensation of the vapour is carried out by a cooling circuit while the subsequent evaporation of the condensed liquid is employed to produce the cooling effect, generating chilled water, which is then employed to cool down the air of the cabin. The developed model is fully dynamic and is based on zero-dimensional lumped parameter models for all the necessary components of the overall system including the engine, the beds, the heating circuit, the cooling circuit, the chilled water circuit and the vehicle cabin. The sorption bed model takes into account the non-equilibrium of the adsorption and desorption processes and is able to work with any kind of adsorbent materials, but the study has been restricted to silica gel and zeolite which are among the most appropriate materials for this application. The model is employed to simulate a standard driving cycle of a vehicle, evaluating the instantaneous available heat from the engine cooling system and the dynamic behaviour of the described sorption A/C system, resulting in the estimation of the evolution of the cabin temperature along the cycle. The model of the overall system has been developed under the MATLAB Simulink programming environment. The model of the adsorption system has been first validated against experimental results, showing its excellent capabilities to predict the dynamic behaviour of the system. The model was then used to analyse the influence of the main design parameters of the bed and the main operation parameters on the system's performance: cooling capacity and coefficient of performance (COP). This was done in order to provide rules for the optimal design and operation of this kind of systems. Finally, the model has been employed to analyse the overall system (engine, adsorption system, heating and cooling circuits, chilled water circuit and cabin) performance along a standard driving cycle, under various operation strategies with regards to the initial state of the adsorbent material in the beds, and operation conditions both for a car and a truck. The results show the difficulties of activating the system at the initial periods of the cycle, when the engine is warming up, and the difficulties to synchronise the operation of the system with the availability of waste energy. They also highlight the limitation in capacity of the designed system, showing that it would not able to fulfil the comfort requirements inside the cabin in hot days or after soaking conditions. Part of this PhD study was carried out in the frame of an R&D project called "Thermally Operated Mobile Air Conditioning Systems - TOPMACS", financially supported by the EU under the FP6 program, which was devoted to the evaluation of the feasibility and performance of potential sorption system solutions for the air conditioning of vehicles.
[ES] Esta tesis doctoral se centra en el modelado de un sistema de adsorción diseñado para proporcionar aire acondicionado de vehículos a partir del calor residual disponible en el circuito de refrigeración de agua/glicol del motor. El sistema se basa en el calentamiento/enfriamiento secuencial de dos reactores que contienen un material adsorbente sólido que desorbe o absorbe vapor de agua. La condensación del vapor se lleva a cabo mediante un circuito de refrigeración, mientras que la posterior evaporación del agua condensada se emplea para producir agua fría, que se emplea finalmente en enfriar el aire de la cabina. El modelo desarrollado es completamente dinámico y se basa en modelos cero dimensionales de parámetros concentrados, para todos y cada uno de los componentes del sistema global incluyendo el motor, los reactores, el circuito de calentamiento, el circuito de enfriamiento, el circuito de agua fría y la cabina del vehículo. El modelo del reactor contempla el no equilibrio de los procesos de adsorción o desorción y es capaz de trabajar con cualquier par de materiales adsorbentes. No obstante el estudio se ha restringido a gel de sílice y zeolita que se encuentran entre los materiales más adecuados para esta aplicación. El modelo se emplea para simular un ciclo de conducción estándar del vehículo, evaluando el calor disponible instantáneamente en el sistema de refrigeración del motor, y el comportamiento dinámico del sistema descrito adsorción-Aire Acondicionado, permitiendo como resultado principal la estimación de la evolución de la temperatura de la cabina a lo largo el ciclo. El modelo del sistema global se ha desarrollado en el marco del entorno de programación MATLAB Simulink. El modelo del sistema de adsorción se ha validado primero contra resultados experimentales demostrando las excelentes capacidades del modelo para predecir el comportamiento dinámico del sistema. A continuación, el modelo se ha aplicado para analizar la influencia de los principales parámetros de diseño del reactor, y de los principales parámetros de operación, sobre el rendimiento del sistema: la capacidad y coeficiente de operación (COP), con el fin de proporcionar directrices para el diseño y operación óptima de este tipo de sistemas. Por último, el modelo ha sido empleado para analizar el funcionamiento y prestaciones del sistema en su conjunto (motor, sistema de absorción, los circuitos de calefacción y refrigeración, circuito de agua fría, y la cabina) a lo largo de un ciclo de conducción estándar, bajo diferentes estrategias de operación en lo que se refiere al estado inicial del material adsorbente en los reactores, y las condiciones de operación, para el caso de un coche, y para el de un camión. Los resultados muestran las dificultades de la activación del sistema en los periodos iniciales del ciclo, cuando el motor se está calentando, y las dificultades para sincronizar el funcionamiento del sistema con la disponibilidad de energía térmica excedente del motor, así como la limitación en la capacidad de enfriamiento del sistema diseñado, que no resulta capaz de satisfacer los requerimientos mínimos de confort dentro de la cabina en los días calurosos o de enfriarlo con suficiente rapidez cuando el vehículo ha estado estacionado bajo el sol durante varias horas. Parte de este estudio de doctorado se ha llevado a cabo en el marco de un proyecto de I + D denominado " Thermally Operated Mobile Air Conditioning Systems - TOPMACS", financiado parcialmente por la UE en el marco del programa FP6, y que perseguía la evaluación de la viabilidad y el potencial de aplicación de soluciones de sistemas de adsorción activadas por el calor residual del motor para el aire acondicionado de vehículos.
[CAT] Aquesta tesi doctoral es centra en el model d'un sistema d'adsorció dissenyat per a proporcionar aire acondicionat a vehicles a partir de la calor residual disponible al circuit de refrigeració d'aigua / glicol del motor. El sistema es basa en l'escalfament / refredament seqüencial de dos reactors que contenen un material adsorbent sòlid que desorbeix o absorbeix vapor d'aigua. La condensació del vapor es porta a terme mitjançant un circuit de refrigeració, mentre que la posterior evaporació de l'aigua condensada s'utilitza per a produir aigua freda, que s'empra finalment en refredar l'aire de la cabina. El model desenvolupat és completament dinàmic i es basa en models zero dimensionals de paràmetres concentrats, per a tots i cada un dels components del sistema global incloent el motor, els reactors, el circuit d'escalfament, el circuit de refredament, el circuit d'aigua freda i la cabina del vehicle. El model del reactor contempla el no equilibri dels processos d'adsorció o desorció i és capaç de treballar amb qualsevol parell de materials adsorbents. No obstant això, l'estudi s'ha restringit a gel de sílice i zeolita que es troben entre els materials més adequats per a aquesta aplicació. El model s'utilitza per a simular un cicle de conducció estàndard del vehicle, avaluant la calor disponible instantàniament en el sistema de refrigeració del motor, i el comportament dinàmic del sistema descrit Adsorció-Aire Acondicionat, permetent com a resultat principal l'estimació de l'evolució de la temperatura de la cabina al llarg del cicle. El model del sistema global s'ha desenvolupat en l'entorn de programació MATLAB Simulink. El model del sistema d'adsorció s'ha validat primer amb resultats experimentals demostrant les excel¿lents capacitats del model per a predir el comportament dinàmic del sistema. A continuació, el model s'ha aplicat per analitzar la influència dels principals paràmetres de disseny del reactor, i dels principals paràmetres d'operació, sobre el rendiment del sistema: la capacitat i coeficient d'operació (COP), amb la finalitat de proporcionar directrius per al disseny i operació òptima d'aquest tipus de sistemes. Finalment, el model ha estat utilitzat per analitzar el funcionament i prestacions del sistema en el seu conjunt (motor, sistema d'absorció, els circuits de calefacció i refrigeració, circuit d'aigua freda, i la cabina) al llarg d'un cicle de conducció estàndard, sota diferents estratègies d'operació pel que fa a l'estat inicial del material adsorbent en els reactors, i les condicions d'operació, per al cas d'un cotxe, i per al d'un camió. Els resultats mostren les dificultats de l'activació del sistema en els períodes inicials del cicle, quan el motor s'està escalfant, i les dificultats per sincronitzar el funcionament del sistema amb la disponibilitat d'energia tèrmica excedent del motor, així com la limitació en la capacitat de refredament del sistema dissenyat, que no resulta capaç de satisfer els requeriments mínims de confort dins de la cabina en els dies calorosos o de refredar amb suficient rapidesa quan el vehicle ha estat estacionat sota el sol durant diverses hores. Part d'aquest estudi de doctorat s'ha dut a terme en el marc d'un projecte d'I + D denominat "Thermally Operated Mobile Air Conditioning Systems - TOPMACS", finançat parcialment per la UE en el marc del programa FP6, i que perseguia l'avaluació de la viabilitat i el potencial d'aplicació de solucions de sistemes d'adsorció activats per la calor residual del motor per a l'aire condicionat de vehicles.
Verde Trindade, M. (2015). MODELLING AND OPTIMIZATION OF AN ADSORPTION COOLING SYSTEM FOR AUTOMOTIVE APPLICATIONS [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/54120
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Yeung, King-ho, et 楊景豪. « An optimization model for a solar hybrid water heating and adsorption ice-making system ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B29632432.

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PANDIAN, ARIVAZHAGAN. « Optimization of the Information Collection Rule’s Adsorption/Elution Method for Virus Detection and Enumeration ». University of Cincinnati / OhioLINK, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=ucin975357716.

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Satam, Sayali S. « Optimization of Wet Friction Systems Based on Rheological, Adsorption, Lubricant and Friction Material Characterization ». University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1503358825451407.

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Voigt, David Robert 1954. « Optimization of combined air stripping and activated carbon adsorption for VOC removal from groundwater ». Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/191962.

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This study examines the combined treatment processes of air stripping and activated carbon adsorption for removing carbon tetrachloride, trichloroethylene and 1,4 dichlorobenzene from groundwater. Air stripping was used as a pretreatment with activated carbon as a polishing step. Optimization is achieved by determining the minimum operating and amortization costs for the variables of packing media depth versus carbon usage rate. A simplified design example illustrates the method of determining the optimum combination of treatment processes for the compounds and concentrations examined. The study included laboratory experiments which examined the air stripping performance of two different packing media as well as developing activated carbon isotherms. The transfer unit model was utilized to estimate the overall liquid mass transfer coefficient (KLa) for all three compounds at all experimental points.

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Smith, Nafeesah. « Development of capacitive deionisation electrodes : optimization of fabrication methods and composition ». University of the Western Cape, 2020. http://hdl.handle.net/11394/7710.

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>Magister Scientiae - MSc
Membrane Capacitive Deionisation (MCDI) is a technology used to desalinate water where a potential is applied to an electrode made of carbonaceous materials resulting in ion adsorption. Processes and materials for the production of electrodes to be applied in Membrane Capacitive Deionisation processes were investigated. The optimal electrode composition and synthesis approached was determined through analysis of the salt removal capacity and the rate at which the electrodes absorb and desorb ions. To determine the conductivity of these electrodes, the four point probe method was used. Contact angle measurements were performed to determine the hydrophilic nature of the electrodes. N2 adsorption was done in order to determine the surface area of carbonaceous materials as well as electrodes fabricated in this study. Scanning electron microscopy was utilised to investigate the morphology. Electrodes were produced with a range of research variables; (i) three different methods; slurry infiltration by calendaring, infiltration ink dropwise and spray-coating, (ii) electrodes with two different active material/binder ratios and a constant conductive additive ratio were produced in order to find the optimum, (iii) two different commercially available activated carbon materials were used in this study (YP50F and YP80F), (iv) two different commercially available electrode substrates were utilised (JNT45 and SGDL), (v) different slurry mixing times were investigated showing the importance of mixing, and (vi) samples were treated at three different temperatures to establish the optimal drying conditions. Through optimization of the various parameters, the maximum adsorption capacity of the electrode was incrementally increased by 36 %, from 16 mg·g-1 at the start of the thesis to 25 mg·g-1 at the end of the study.

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Bentley, Jason A. « Systematic process development by simultaneous modeling and optimization of simulated moving bed chromatography ». Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47531.

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Adsorption separation processes are extremely important to the chemical industry, especially in the manufacturing of food, pharmaceutical, and fine chemical products. This work addresses three main topics: first, systematic decision-making between rival gas phase adsorption processes for the same separation problem; second, process development for liquid phase simulated moving bed chromatography (SMB); third, accelerated startup for SMB units. All of the work in this thesis uses model-based optimization to answer complicated questions about process selection, process development, and control of transient operation. It is shown in this thesis that there is a trade-off between productivity and product recovery in the gaseous separation of enantiomers using SMB and pressure swing adsorption (PSA). These processes are considered as rivals for the same separation problem and it is found that each process has a particular advantage that may be exploited depending on the production goals and economics. The processes are compared on a fair basis of equal capitol investment and the same multi-objective optimization problem is solved with equal constraints on the operating parameters. Secondly, this thesis demonstrates by experiment a systematic algorithm for SMB process development that utilizes dynamic optimization, transient experimental data, and parameter estimation to arrive at optimal operating conditions for a new separation problem in a matter of hours. Comparatively, the conventional process development for SMB relies on careful system characterization using single-column experiments, and manual tuning of operating parameters, that may take days and weeks. The optimal operating conditions that are found by this new method ensure both high purity constraints and optimal productivity are satisfied. The proposed algorithm proceeds until the SMB process is optimized without manual tuning. In some case studies, it is shown with both linear and nonlinear isotherm systems that the optimal performance can be reached in only two changes of operating conditions following the proposed algorithm. Finally, it is shown experimentally that the startup time for a real SMB unit is significantly reduced by solving model-based startup optimization problems using the SMB model developed from the proposed algorithm. The startup acceleration with purity constraints is shown to be successful at reducing the startup time by about 44%, and it is confirmed that the product purities are maintained during the operation. Significant cost savings in terms of decreased processing time and increased average product concentration can be attained using a relatively simple startup acceleration strategy.

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Yesuf, Jemil N. « Determination of single and multi-component adsorption isotherms using nonlinear error functions and spreadsheet optimization technique / ». Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1136096201&sid=12&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Hentzschel, Christina M. [Verfasser]. « Optimization of the Liquisolid Technology : Identification of Highly Effective Tableting Excipients for Liquid Adsorption / Christina M. Hentzschel ». Hamburg : Staats- und Universitätsbibliothek Hamburg, 2011. http://d-nb.info/1010759698/34.

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Livres sur le sujet "Adsorption optimization"

J, McGuire Michael, et AWWA Research Foundation, dir. Optimization and economic evaluation of granular activated carbon for organic removal. Denver, CO : American Water Works Association Research Foundation, American Water Works Association, 1989.

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W, Hand David, et United States. National Aeronautics and Space Administration., dir. Development of a rational modeling approach for the design, and optimization of the multifiltration unit : Final summary report. [Washington, DC : National Aeronautics and Space Administration, 1996.

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Wood, Kevin R., Y. A. Liu et Yueying Yu. Design, Simulation and Optimization of Adsorptive and Chromatographic Separations. Weinheim, Germany : Wiley-VCH Verlag GmbH & Co. KGaA, 2018. http://dx.doi.org/10.1002/9783527815029.

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Sapienza, Alessio. Dynamics of Adsorptive Systems for Heat Transformation : Optimization of Adsorber, Adsorbent and Cycle. Springer, 2018.

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Liu, Y. A., Kevin R. Wood et Yueying Yu. Design, Simulation and Optimization of Adsorptive and Chromatographic Separations : A Hands-On Approach. Wiley & Sons, Incorporated, John, 2018.

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Liu, Y. A., Kevin R. Wood et Yueying Yu. Design, Simulation and Optimization of Adsorptive and Chromatographic Separations : A Hands-On Approach. Wiley & Sons, Incorporated, John, 2018.

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Liu, Y. A., Kevin R. Wood et Yueying Yu. Design, Simulation and Optimization of Adsorptive and Chromatographic Separations : A Hands-On Approach. Wiley & Sons, Limited, John, 2018.

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Liu, Y. A., Kevin R. Wood et Yueying Yu. Design, Simulation and Optimization of Adsorptive and Chromatographic Separations : A Hands-On Approach. Wiley & Sons, Limited, John, 2018.

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Liu, Y. A., Kevin R. Wood et Yueying Yu. Design, Simulation and Optimization of Adsorptive and Chromatographic Separations : A Hands-On Approach. Wiley & Sons, Incorporated, John, 2018.

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Chapitres de livres sur le sujet "Adsorption optimization"

LeVan, M. Douglas. « Thermal Swing Adsorption : Regeneration, Cyclic Behavior, and Optimization ». Dans Adsorption : Science and Technology, 339–55. Dordrecht : Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2263-1_18.

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Tina, Tolic, Klepo Lejla, Topcagic Anela, Copra-Janicijevic Amira, Omar Chahin, Kresic Dragan et Ostojic Jelena. « Optimization of Glyphosate Adsorption Conditions on Pyrophyllite ». Dans IFMBE Proceedings, 883–900. Cham : Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-49062-0_92.

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Luo, Lingai. « Intensification of Adsorption Process in Porous Media ». Dans Heat and Mass Transfer Intensification and Shape Optimization, 19–43. London : Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-4742-8_2.

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Gupta, T. B., D. H. Lataye et S. T. Kurwadkar. « Adsorption of Crystal Violet Dye : Parameter Optimization Using Taguchi’s Experimental Methodology ». Dans Advanced Engineering Optimization Through Intelligent Techniques, 653–65. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8196-6_57.

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Roušar, Ivo, Martin Čekal et Pavel Ditl. « Pressure Swing Adsorption - The Optimization of Multiple Bed Units ». Dans Precision Process Technology, 483–92. Dordrecht : Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1759-3_37.

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Slokar, Y. M., N. S. Nkiriti, K. Huysman et B. Petrusevski. « Optimization of IOCP coating to improve arsenic adsorption capacity ». Dans Arsenic in the Environment : Bridging Science to Practice for Sustainable Development As2021, 341–42. London : CRC Press, 2024. http://dx.doi.org/10.1201/9781003317395-140.

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Talukdar, Preetisagar, Pranjal Pratim Das et Manuj Kumar Hazarika. « Enthalpy–Entropy Compensation and Adsorption Characteristics of Legumes Using ANN Modeling ». Dans Food Product Optimization for Quality and Safety Control, 233–64. Includes bibliographical references and index. : Apple Academic Press, 2020. http://dx.doi.org/10.1201/9781003003144-10.

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Potschka, A., A. Küpper, J. P. Schlöder, H. G. Bock et S. Engell. « Optimal Control of Periodic Adsorption Processes : The Newton-Picard Inexact SQP Method ». Dans Recent Advances in Optimization and its Applications in Engineering, 361–78. Berlin, Heidelberg : Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12598-0_31.

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Guo, Denghui, et Yuan Chen. « Optimization Design and Analysis of an Adaptive Variable Magnetic Adsorption Climbing Robot ». Dans Mechanisms and Machine Science, 484–93. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0142-5_47.

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Ganvir, V. N., M. L. Meshram et R. R. Patil. « Optimization of Adsorption Capacity of Prepared Activated Carbon Using Response Surface Methodology ». Dans Novel Water Treatment and Separation Methods, 233–44. Toronto ; Waretown, NJ : Apple Academic Press, 2017. | "Outcome of national conference REACT- 16, organized by the Laxminarayan Institute of Technology, Nagpur, Maharashtr , India, in 2016"--Introduction. || Includes bibliographical references and index. : Apple Academic Press, 2017. http://dx.doi.org/10.1201/9781315225395-17.

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Actes de conférences sur le sujet "Adsorption optimization"

Aliyev, Agadadash, Fakhraddin Yusubov, Rauf Babayev et Afag Guliyeva. « Modeling and optimization of adsorption processes ». Dans 2012 IV International Conference "Problems of Cybernetics and Informatics" (PCI). IEEE, 2012. http://dx.doi.org/10.1109/icpci.2012.6486366.

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Hassan, Huzairy, Mohd Azmier Ahmad, Lim Chia Hooi et Olugbenga Solomon Bello. « Optimization of chlorophenols adsorption using OPEFB biosorbent ». Dans INTERNATIONAL CONFERENCE ON TRENDS IN CHEMICAL ENGINEERING 2021 (ICoTRiCE2021). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0113812.

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Ramotowski, M., et N. Shamsundar. « Optimization of a Simplified Vapor Adsorption Cycle ». Dans ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0978.

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Abstract An analysis is performed to find the optimum coefficient of performance of three models of a vapor adsorption heat pump, namely, a basic cycle with no regeneration, a cycle with cocurrent-flow regenerative heating, and a cycle with countercurrent-flow regenerative heating. Nonlinear optimization techniques are employed to find the best operating conditions within a range of temperatures. The results for the three model cycles are computed for the water and Zeolite-NaX pair and compared to those for an equivalent 3-T Carnot device. The usefulness of thermodynamic cycle optimization as a preliminary step to performing more detailed thermal analyses is discussed.

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Almeida, Renata M. R. G., Marlei B. Pasotto et Carlos O. Hokka. « Optimization of the continuous clavulanic acid adsorption process ». Dans Proceedings of the III International Conference on Environmental, Industrial and Applied Microbiology (BioMicroWorld2009). WORLD SCIENTIFIC, 2010. http://dx.doi.org/10.1142/9789814322119_0073.

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Alshehri, Mansoor. « Modelling of adsorption of Ni atoms on nano-sheets ». Dans 2019 8th International Conference on Modeling Simulation and Applied Optimization (ICMSAO). IEEE, 2019. http://dx.doi.org/10.1109/icmsao.2019.8880283.

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Narayanan, Shankar, Xiansen Li, Sungwoo Yang, Ian McKay, Hyunho Kim et Evelyn N. Wang. « Design and Optimization of High Performance Adsorption-Based Thermal Battery ». Dans ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17472.

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Electric vehicle (EV) technology faces a substantial challenge in terms of driving range, especially when the vehicle’s climate control system relies entirely on the onboard electric battery. Therefore, we are developing an advanced adsorption-based thermal battery (ATB) capable of delivering both heating and cooling for electric vehicles with minimal use of the electric battery bank. While adsorption based climate control systems offer the advantage of direct usage of primary thermal energy sources for operation, they typically have low COP values, and are often bulky and heavy. A compact and lightweight ATB is necessary to replace existing climate control systems in EVs that use electric battery for operation. In this paper, we present a detailed computational analysis of adsorption kinetics taking place within an adsorption bed that is capable of delivering large cooling and heating capacities by making use of novel adsorbents. The overall design of the adsorption bed, which is a critical element in achieving a high performance thermal battery, is also discussed. To make performance predictions, we characterized the adsorbents to obtain their thermophysical and transport properties as well as adsorption characteristics. The model consequently incorporates these measured properties to predict the performance variation as a function of time. This work provides the critical parameters affecting heating and cooling rates, and identifies avenues for further improvement in the overall performance of the thermal battery.

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Akulinin, Evgeny. « OPTIMIZATION OF ENERGY-SAVING VACUUM PRESSURE SWING ADSORPTION UNIT ». Dans 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b41/s19.127.

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Wartenberg, Nicolas, Margaux Kerdraon, Mathieu Salaun, Lena Brunet-Errard, Christophe Fejean et David Rousseau. « Evaluation and Optimization of Adsorption Reduction Strategies on Chemical EOR Economics ». Dans International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21810-ms.

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Abstract This paper is dedicated to the selection of the most effective way of mitigating surfactant adsorption in chemical EOR flooding. Mitigation strategies based on either water treatment or adsorption inhibitors were benchmarked for a sea water injection brine, on both performances and economics aspects. Performances in surfactant adsorption reduction were evaluated by applying salinity and/or hardness gradient strategies through dedicated water softening techniques, such as reverse osmosis or nanofiltration. Adsorption inhibitor addition, which does not require any water treatment, was also assessed and optimized for comparison. For each scenario, a suitable surfactant formulation was designed and evaluated through phase diagrams, static adsorption and diphasic coreflood experiments. Then the real benefit of surfactant adsorption reduction on the overall EOR process economics (including the costs of chemicals and water treatment) was assessed depending on the selected strategy. Sea water was considered as the injection brine for this study as it is widely used in chemical EOR process and often suffers high surfactant adsorption level. It was found that residual oil saturation after chemical flooding (SORc) dropped from 29% to 7% by applying a hardness gradient through nanofiltration process while 4% was reached with reverse osmosis. Regarding costs and footprint however, nanofiltration was found to be more advantageous. Adsorption inhibitors addition met similar performances to nanofiltration-based process (SORc=7%) and could be a valuable option depending on injected volume (pilot or small deployment) or field location (off-shore) as they do not require water treatment plant investment. Overall, this study provides useful practical insights on both performances and economics for selecting the most adapted strategy depending on the considered field case.

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Ranes, Anne, Patrick Phelan, Rafael Pacheco, Anastasios Frantzis et Lionel Metchop. « Optimization of the Adsorber in an Adsorption Solar-Powered Cooling System ». Dans ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81833.

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The adsorption solar-powered cooling system is one of several types of solar-powered cooling systems currently under development. Increasing the efficiency and decreasing the cost of this system will make it a commercially viable alternative to traditional refrigeration systems. The objective of this project was to optimize the adsorber in the adsorption system. A mathematical model of the refrigerant distribution within a cylindrical adsorber was developed using equations from Chua et al. [1]. The simulation revealed effects of varying design parameters on the theoretical refrigerant mass flow rate, which is directly proportional to the system refrigeration capacity. These results indicated parameter values to be used in designing the adsorber. It was found that decreased particle radius, decreased bed porosity, increased pipe radius, increased adsorber radius, and increased fin thickness all positively affect the performance of the adsorption system. Further simulation and experimental trials are recommended to verify these results.

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Mulloth, Lila, Mini Varghese et Bernadette Luna. « Power Optimization Options for a Universal Temperature-Swing Adsorption Compressor Design ». Dans 40th International Conference on Environmental Systems. Reston, Virigina : American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-6037.

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Rapports d'organisations sur le sujet "Adsorption optimization"

Spencer, Barry B., et Stephanie H. Bruffey. Initial Series of Ruthenium Adsorption Optimization Studies. Office of Scientific and Technical Information (OSTI), août 2018. http://dx.doi.org/10.2172/1479744.

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