Готові списки джерел за темами / Isotherm Study

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Добірка наукової літератури з теми "Isotherm Study"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Isotherm Study"

El-Aswad, Ahmed F., Mohamed R. Fouad, Mohamed E. I. Badawy, and Maher I. Aly. "Modeling study of adsorption isotherms of chlorantraniliprole and dinotefuran on soil." Current Chemistry Letters 13, no. 3 (2024): 503–14. http://dx.doi.org/10.5267/j.ccl.2024.2.008.

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Knowledge of pesticide adsorption characteristics is essential to predict their behavior in soil. The adsorption equilibrium isotherms of two insecticides chlorantraniliprole (CAP) and dinotefuran (DNF) on two common Egyptian soil types, clay loam and sandy loam were studied and modeled. To predict the adsorption isotherms and to determine the adsorption parameters, ten isotherm models: Langmuir (five linear forms), Freundlich, Temkin, Dubinin-Radushkevich, Elovick, Fowler-Guggenheim, Kiselev, Jovanoic, Harkins-Jura, and Halsey were applied on experimental data. The results revealed that the a

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Journal, Baghdad Science. "Adsorption Study for Trifluralin on Iraqi ? –Alumina." Baghdad Science Journal 9, no. 1 (2012): 153–59. http://dx.doi.org/10.21123/bsj.9.1.153-159.

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Equilibrium adsorption isotherm for the removal of trifluralin from aqueous solutions using ? –alumina clay has been studied. The result shows that the isotherms were S3 according Giels classification. The effects of various experimental parameters such as contact time, adsorbent dosage, effect of pH and temperature of trifluralin on the adsorption capacities have been investigated. The adsorption isotherms were obtained by obeying freundlich adsorption isotherm with (R2 = 0.91249-0.8149). The thermodynamic parameters have been calculated by using the adsorption process at five different tempe

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Chen, Qing, Yuanyuan Tian, Peng Li, et al. "Study on Shale Adsorption Equation Based on Monolayer Adsorption, Multilayer Adsorption, and Capillary Condensation." Journal of Chemistry 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/1496463.

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Shale gas is an effective gas resource all over the world. The evaluation of pore structure plays a critical role in exploring shale gas efficiently. Nitrogen adsorption experiment is one of the significant approaches to analyze pore size structure of shale. Shale is extremely heterogeneous due to component diversity and structure complexity. Therefore, adsorption isotherms for homogeneous adsorbents and empirical isotherms may not apply to shale. The shape of adsorption-desorption curve indicates that nitrogen adsorption on shale includes monolayer adsorption, multilayer adsorption, and capil

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Ali Fil, Baybars. "Investigation of adsorption of Basic Orange 2 dye on montmorillonite and error analysis." Bulletin of the Chemical Society of Ethiopia 37, no. 1 (2022): 47–58. http://dx.doi.org/10.4314/bcse.v37i1.5.

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ABSTRACT. In this study, isotherm studies were investigated for the removal of basic orange 2 (BO2) dye on the montmorillonite surface. Two-parameter isotherm models such as Langmir, Freundlich, and Temkin isotherms and Three-parameter isotherm models such as Sips, Toth, and Khan isotherms were calculated by non-linear analysis method. The adsorption capacity at equilibrium was calculated by adding 0.035 g of adsorbent at 10-300 mg/L concentrations to 100 mL of synthetic dyestuff solution at room temperature. According to the results obtained, it was determined that the isotherm data matched t

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Gong, Zheng Jun, Wenbo Zhou, and Zhong Ping Qiu. "The Study of Copper (II) Removal from Aqueous Solutions by Adsorption Using Corn Stalk Material." Advanced Materials Research 610-613 (December 2012): 1950–53. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.1950.

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In this study, removal of copper(Ⅱ) from aqueous solutions was examined using corn stalk. In the batch mode adsorption studies, the effects of initial pH and contact time on the copper(Ⅱ) adsorption by the corn stalk have been studied. The results show that: the pH 6.0 and contact time 8 hrs is optimum conditions of this absorption process when the dosage of corn stalk is 0.1g. In the isotherm studies, the Langmuir and Freundlich isotherm models were applied. The R2 of the Langmuir and Freundlich isotherm are 0.981 and 0.944 respectively. The Langmuir adsorption capacity Qmax is 54.05 mg/g. Th

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Zeng, Xing, Hengyu Wang, Jing Yao, and Yuheng Li. "Analysis of Factors for Compacted Clay Liner Performance Considering Isothermal Adsorption." Applied Sciences 11, no. 20 (2021): 9735. http://dx.doi.org/10.3390/app11209735.

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The concentration profiles and breakthrough curves of the 2 m thick compacted clay liner (CCL) given in the specification were compared, considering three different adsorption isotherms (upper convex, linear, and lower concave). In addition, the effects of transport parameters, sorption isotherms, and source concentrations on pollutant migration were analyzed. The results showed that the dimensionless breakthrough curves of different source concentrations considering the linear adsorption isotherm coincided with each other, as the partition coefficient of the linear adsorption isotherm was con

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Agarwal, Ajay K., Mahendra S. Kadu, Chandrashekhar P. Pandhurnekar, and Ishwardas L. Muthreja. "Equilibrium isotherm studies for the sorption of Nickel ions onto coal fly ash." Environment Conservation Journal 15, no. 1&2 (2014): 153–59. http://dx.doi.org/10.36953/ecj.2014.151220.

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The objective of the present study was to study equilibrium isotherm for the sorption of Nickel ions onto coal fly ash. In this study, BET adsorption isotherm was found to be best fitted among Langmuir, Freundlich, BET, Temkin and Harkins Jura adsorption isotherms using lest square fit method. The best fit adsorption isotherm is assessed by the linear coefficient of determination (R2) and non-linear Chi-square test. The theoretical value of qe calculated from the best fit linear equation of each adsorption isotherm and the experimental values of qe (0.08) are plotted against Ce, to compare the

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Chen, Jun Tao, Yue Xin Han, Shu Fang Ding, and Shui Lin Zheng. "The Adsorption Performance Study of Acid Leaching Residue of Asbestos Tailings." Materials Science Forum 685 (June 2011): 246–52. http://dx.doi.org/10.4028/www.scientific.net/msf.685.246.

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Acid leaching residue of asbestos tailings was calcined at 600°C. N2adsorption and desorption isotherms of this modified mineral material were measured at low temperature and the adsorption characteristic of acid leaching residue as well as the mechanism were discussed. The specific surface area of acid leaching residue was calculated by BET model, and meanwhile micropore and mesopore structural parameters were calculated by means of ‘t-Plot’ and BJH theory, respectively. The results showed that the N2adsorption-desorption isotherms of acid leaching residue were in line withⅠpattern of the IUP

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Tarbuka, P. F., and R. H. Gumus. "Methylene Blue and Iron (II) Adsorption onto Raphia Hookeri Seed: A Comparative Equilibrium Isotherm Study." International Journal of Chemical and Process Engineering Research 8, no. 1 (2021): 11–18. http://dx.doi.org/10.18488/journal.65.2021.81.11.18.

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In this study, activated carbon prepared from Raphia hookeri seed was employed as an adsorbent to take up methylene blue (an organic ion-in-solution) and iron (II), a metal ion-in-solution. The biosorbent was prepared using chemical activation using sodium hydroxide (NaOH) as an impregnating agent. Calibration was performed with a focus on the change in the adsorbate concentration. The equilibrium isotherms study was conducted by considering a range of sorbate concentrations, to determine the optimal conditions for the adsorption systems. The same sorbate volume (10 ml), and the same dosage (0

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Ragadhita, Risti, and Asep Bayu Dani Nandiyanto. "How to Calculate Adsorption Isotherms of Particles Using Two-Parameter Monolayer Adsorption Models and Equations." Indonesian Journal of Science and Technology 6, no. 1 (2021): 205–34. http://dx.doi.org/10.17509/ijost.v6i1.32354.

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Adsorption isotherm is the most important calculation to predict and analyze the various possible mechanisms that occur in adsorption process. However, until now, most studies only presented the adsorption isotherm theory, and there are no studies that explain the adsorption isotherm thoroughly and in detail from theory to calculation. Therefore, this study contains guidelines for selecting the type of adsorption isotherm to describe the entire adsorption data set, which is featured by the ten most common adsorption isotherms. The steps of how to analyze the two-parameter monolayer adsorption

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Дисертації з теми "Isotherm Study"

Furuhashi, Toyohisa. "STUDY OF PROPANE ADSORPTION ISOTHERM ON PURIFIED HIPCO SINGLE-WALLED CARBON NANOTUBES." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1967978731&sid=2&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Thompson, Natalie A. "Comparative Study of Metal Carbonate Based Adsorbents Recovering Phosphate from Water." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535633479315897.

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Lian, Qiyu. "Adsorption of Lead(II) onto Phosphate Modified Ordered Mesoporous Carbon| Kinetics, Isotherm, Mechanism, Thermodynamic and Diffusion-Controlled Study." Thesis, University of Louisiana at Lafayette, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10814555.

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<p>Adsorption of Pb2+ onto ordered mesoporous Carbon (OMC) modified by nitric and phosphoric acid was investigated with variations of the parameters, such as pH, contact time, temperature, and initial concentration. Optimum Pb2+ adsorption was observed at a pH value of 5. Modified OMC was characterized by Nitrogen Adsorption-Desorption Isotherm, FT-IR, SEM, EDS, and TEM. The time required to reach equilibrium was between 20 mins and 30 mins. The equilibrium adsorption capacity of modified OMC (MOMC-NP) increased with the increase of temperature indicating that the process of Pb2+ adsorption i

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Telesford, Dana-Marie Leslie-Ann. "Langmuir Trough and Brewster Angle Microscopy Study of Model Lung Surfactant Monolayers at the Air/Aqueous Interface." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1353516892.

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Brouard, Christine. "Contribution à l'étude de la rétention de phénylurées (herbicides) par des adsorbants modèles et des sols." Angers, 1995. http://www.theses.fr/1995ANGE0006.

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Notre objectif était d'étudier la rétention d'herbicides de la famille des phenylurées sur des adsorbants minéraux et dans le sol. Les molécules retenues sont le chloroxuron, le chlortoluron, le metobromuron, l'isoproturon et le difenoxuron. Les adsorbants utilises sont la celite, le florisil, l'alumine, le carbonate et le sulfate de calcium. Les sols étudiés sont un sol limoneux-argileux et un sol limoneux-sableux. Nous poursuivons le double but analytique et environnemental d'améliorer les étapes de purification par chromatographie d'adsorption d'extraits en vue de l'analyse de résidus, et d

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Tee, Yit-Hong. "DESTRUCTION STUDY OF TOXIC CHLORINATED ORGANICS USING BIMETALLIC NANOPARTICLES AND MEMBRANE REACTOR: SYNTHESIS, CHARACTERIZATION, AND MODELING." Lexington, Ky. : [University of Kentucky Libraries], 2006. http://lib.uky.edu/ETD/ukychen2006t00528/Dissertation.pdf.

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Thesis (Ph. D.)--University of Kentucky, 2006.<br>Title from document title page (viewed on January 24, 2007). Document formatted into pages; contains: xi, 167 p. : ill. Includes abstract and vita. Includes bibliographical references (p. 149-165).

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Castada, Hardy Zingalaoa. "Brewster Angle Microscopy Study of Model Lung Surfactant Systems at the Air-Water and Air-Physiological Buffer Interfaces." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281642097.

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Bonneau, Olivier. "Étude des effets physico-chimiques des superplastifiants en vue d'optimiser le comportement rhéologique des bétons à ultra-hautes performances." Cachan, Ecole normale supérieure, 1997. http://www.theses.fr/1997DENS0027.

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Les bétons de poudres réactives (BPR) forment une nouvelle génération de BUHP. Les bpr sont composes de poudres fines et sont caractérises par un faible rapport eau/ciment et une forte concentration en superplastifiant. Pour étudier l'interaction (ciment, fumée de silice, adjuvant), nous avons développé une méthode basée sur le découplage des effets de l'eau et de l'adjuvant sur la rhéologie. Dans le cas des bpr, il existe un optimum rhéologique en superplastifiant qui dépend fortement de la formulation. Un modèle de prédiction permet de calculer cet optimum avec seulement 4 paramètres définis

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Du, Toit Elizabeth Louisa. "The Rate inhibiting effect of water as a product on reactions catalysed by cation exchange resins formation of mesityl oxide from acetone as a case study /." Diss., Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-02272004-140347.

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Darby, Samuel James. "An isothermal titration calorimetry study : complex binding isotherms obtained from the interaction between phytate and tannins with proteins." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/13841/.

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In a single Isothermal Titration Calorimetry (ITC) experiment, the Gibbs free energy (∆G), the enthalpy (∆H), entropy (∆S), specific heat capacity (ΔCp) and stoichiometry of binding (n) can be identified. Non-sigmoidal binding isotherms are particularly difficult to interpret, yet these are routinely found in ITC studies. ITC binding studies at 25 °C between tannins and bovine serum albumin (BSA) produced biphasic binding isotherms that were suggested to be indicators of positive cooperative binding. However, reducing the temperature to 10 °C produced monophasic binding isotherms, which raised

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Книги з теми "Isotherm Study"

Scialpi, Angela, and Alessio Mengoni, eds. La PCR e le sue varianti. Firenze University Press, 2008. http://dx.doi.org/10.36253/978-88-6453-159-5.

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The book "La PCR e le sue varianti" is designed as a reference tool for those whose laboratory activities deal with methods based on nucleic acid amplification. The text provides the theoretical bases of the polymerase chain reaction (PCR) and its variants (e.g. RT-PCR, quantitative PCR, isothermic PCR) in a rapid and concise manner and describes the principal applications used for genetic identification and the study of genetic polymorphism, in the form of a protocol that can be easily consulted by the users.

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Sherwood, Dennis, and Paul Dalby. Ideal gas processes – and two ideal gas case studies too. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198782957.003.0007.

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This chapter brings together, and builds on, the results from previous chapters to provide a succinct, and comprehensive, summary of all key relationships relating to ideal gases, including the heat and work associated with isothermal, adiabatic, isochoric and isobaric changes, and the properties of an ideal gas’s heat capacities at constant volume and constant pressure. The chapter also has two ‘case studies’ which use the ideal gas equations in broader, and more real, contexts, so showing how the equations can be used to tackle, successfully, more extensive systems. The first ‘case study’ is

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Karayannopoulos, Constantine *. Ispthermal fixed-bed sorption of binary systems: study of solutes with type I, II and IV parent isotherms, using equilibrium theory. Phase separation phenomena. 1988.

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Частини книг з теми "Isotherm Study"

Sharma, Shivanjali, Amit Saxena, and Neha Saxena. "Gas Content Measurement in Coalbed: Desorption Test and Isotherm Study." In SpringerBriefs in Petroleum Geoscience & Engineering. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21414-2_3.

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Zhang, Yun. "Study on Effective Temperature Extreme Isotherm Map of Steel-Concrete Composite Girder Bridge." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-4293-8_19.

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Das, Subhajit, Sajal Rudra Paul, and Animesh Debnath. "Methyl Red Dye Abatement from Aqueous Solution Using Calcium Ferrite and Manganese Ferrite Magnetic Nanocomposite: Kinetics and Isotherm Study." In Springer Proceedings in Earth and Environmental Sciences. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-37596-5_2.

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Tiselj, Iztok, Jan Kren, and Blaž Mikuž. "Experimental Study of Isothermal Vertical Slug Flow." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-64362-0_39.

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Ben Taher, M. A., T. Kousksou, H. Makroum, M. Ahachad, and M. Mahdaoui. "Numerical Study of a Non-isothermal Refrigerated Truck." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36671-1_43.

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Nixon, G. "CHAPTER 4. “DNA Techniques” Case Study: Isothermal Approaches." In Food Chemistry, Function and Analysis. Royal Society of Chemistry, 2019. http://dx.doi.org/10.1039/9781788016025-00050.

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Li, Jingzhu, Peng Fan, Chengshang Zhou, and Z. Zak Fang. "Isothermal Hydrogenation Kinetics Study of Magnesium Hydride with TiH2Additive." In Magnesium Technology 2014. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118888179.ch8.

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Reshetnyak, Yu G. "Study of Manifolds of Bounded Curvature Using Isothermal Coordinates." In Reshetnyak's Theory of Subharmonic Metrics. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24255-7_6.

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Li, Jingzhu, Peng Fan, Chengshang Zhou, and Z. Zak Fang. "Isothermal Hydrogenation Kinetics Study of Magnesium Hydride with TiH2 Additive." In Magnesium Technology 2014. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-48231-6_8.

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Lanooij, Judith, and Elwira Smakowska-Luzan. "Isothermal Titration Calorimetry to Study Plant Peptide Ligand-Receptor Interactions." In Methods in Molecular Biology. Springer US, 2023. http://dx.doi.org/10.1007/978-1-0716-3511-7_22.

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Тези доповідей конференцій з теми "Isotherm Study"

Jauhari, Smita, and Bhupendra Mistry. "Study of the Inhibitive Effect of Novel Schiff Base on Corrosion of HCL on Mild Steel." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01478.

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Abstract Schiff base (E)-3-chloro-N-((2-chloroquinolin-3-yl)methylene)aniline (CQA) was synthesized, and its inhibitive effect for mild steel in 1M HCl solution was investigated by weight loss measurement and electrochemical tests. From the weight loss measurements and electrochemical tests, it was observed that the inhibition efficiency increases with the increase in the Schiff base concentration and reaches a maximum at the optimum concentration. This is further confirmed by the decrease in corrosion rate. It is found that the system follows Langmuir adsorption isotherm.

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Jauhari, Smita, and Bhupendra Mistry. "“Study of the Inhibitive Effect of Novel Quinoline Schiff Base on Corrosion of Mild Steel in HCl Solution”." In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02326.

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Abstract Schiff base 4-Chloro-N-[(2-chloroquinolin-3-yl)methylene]aniline was synthesized, and its inhibitive effect for mild steel in 1M HCl solution was investigated by weight loss measurement and electrochemical tests.From the weight loss measurements and electrochemical tests, it was observed that the inhibition efficiency increases with the increase in the Schiff base concentration and reaches a maximum at the optimum concentration. This is further confirmed by the decrease in corrosion rate. It is found that the system follows Langmuir adsorption isotherm.

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Cundari, Lia, Saputri Agus Renelda, Nur Hayyu Tagar Molek, Shifa Putri Amaliah, and Feby Azzahra. "Removal of Chromium (VI) from Aqueous Solution Using Bentonite: The Effect of Adsorbent Dose on Characteristic, Isotherm and Kinetic Study." In Sriwijaya International Conference on Engineering and Technology 2023. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-v6q7ym.

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One kind of heavy metal that comes from industrial waste is Cr (VI), which is obtained from steel, textile, tanning, photography, dyes, explosives, matches, and fuel mobilization waste. Cr (VI) is a carcinogen and extremely hazardous to both people and animals. In Indonesia, bentonite is a raw material that is abundantly available. This study aims to investigate the effects of varying adsorbent doses on the properties, % removal, isotherms, and kinetics of adsorption of Cr (VI) from aqueous solution. Adsorbent doses ranged from 10 g/L to 30 g/L for 0–80-minute contact periods. morphological an

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Jung, Dongin, Hyeon Yang, Donggeun Kang, Donghyeon Kim, Siuk Roh, and Jiyong Kim. "ML-based adsorption isotherm prediction of metal-organic frameworks for carbon dioxide and methane separation adsorbent screening." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.153885.

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The efficient separation of carbon dioxide (CO2) and methane (CH4) is crucial for chemical processes, including biogas upgrading and natural gas purification. Metal-organic frameworks (MOFs) have gained significant attention as promising adsorbents for these processes due to their high porosity and tunable structures. Estimating the adsorption capacity of MOFs is essential for screening high performing adsorbents. While molecular simulations are commonly used to estimate the adsorption capacities, their computational intensity acts as a bottleneck in screening MOF adsorbents. In this study, we

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Jordan, M. M., K. S. Sorbie, P. Jiang, M. D. Yuan, A. C. Todd, and L. Thiery. "The Effect of Clay Minerals, pH, Calcium and Temperature on the Adsorption of Phosphonate Scale Inhibitor onto Reservoir Core and Mineral Separates." In CORROSION 1994. NACE International, 1994. https://doi.org/10.5006/c1994-94049.

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Abstract During a scale inhibitor squeeze treatment, the dynamics of the inhibitor return is governed by the inhibitor/rock interaction. In the case of adsorption/desorption inhibitor treatments, this interaction is described through the inhibitor/rock adsorption isotherm. The rock mineralogy plays an important role in determining the nature of the adsorption isotherm and clays in particular are known to strongly affect the adsorption process. However, no previous work has (a) presented a systematic study of the effects of various clays on inhibitor adsorption and (b) clearly demonstrated the

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Singh, Ambrish. "Pyran Derivatives as Acidizing Corrosion Inhibitors for N80 Steel in Hydrochloric Acid: Theoretical and Experimental Approaches." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-12835.

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Absrract The corrosion inhibition performance of pyran derivatives (AP) on N80 steel in 15% HCl was investigated by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, weight loss, contact angle and scanning electron microscopy (SEM) measurements, DFT and molecular dynamic simulation. The adsorption of APs on the surface of N80 steel obeyed Langmuir isotherm. Potentiodynamic polarization study confirmed that inhibitors are mixed type with cathodic predominance. Molecular dynamic simulation was applied to search for most stable configuration and adsorption energies for t

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Bahadori, Kasra Shayar, Bruce Brown, and Marc Singer. "Investigation of CO2 Corrosion Inhibitor Adsorption and Desorption Behavior Using Langmuir Isotherm Model and Effects of Iron Carbide on CI Persistency." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19451.

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Abstract One of the most conventional methods to mitigate CO2 corrosion of pipelines in the oil and gas industry is to use chemical corrosion inhibitors. Probably the most commonly used inhibition method in the upstream oil and gas industry involves the continuous injection of an appropriate chemical formulation package to maintain a constant concentration of inhibitor in the fluid flowing through the pipeline. Selection of the inhibitor package is typically done through a tedious laboratory testing campaign, which involves the determination of the inhibitor efficiency and persistency in simul

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Kim, Jinsu, Shubham Jamdade, Yanhui Yuan, and Matthew J. Realff. "Adsorption-based Atmospheric Water Extraction Process: Kinetic Analysis and Stochastic Optimization." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.180182.

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Adsorption-based Atmospheric Water Extraction (AWE) is an energy-efficient distributed freshwater supply method. This research focuses on AWE's kinetic analysis and stochastic optimization, investigating the impact of ambient conditions, kinetics, and weather variability. A one-dimensional fixed-bed system was numerically analyzed using the validated isotherm of MIL-100 (Fe), assuming different kinetic parameters within the linear driving force model. Stochastic optimization, based on annual weather data from Georgia (GA), illustrates the influence of weather conditions on AWE process performa

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Matias, Rui D. G., Alexandre F. P. Ferreira, Idelfonso B. R. Nogueira, and Ana M. Ribeiro. "A Novel AI-Driven Approach for Parameter Estimation in Gas-Phase Fixed-Bed Experiments." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.156880.

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The transition to renewable energy sources, such as biogas, requires purification processes to separate methane from carbon dioxide, with adsorption-based methods being widely employed. Accurate simulations of these systems, governed by coupled PDEs, ODEs, and algebraic equations, critically depend on precise parameter determination. While traditional approaches often result in significant errors or complex procedures, optimization algorithms provide a more efficient and reliable means of parameter estimation, simplifying the process, improving simulation accuracy, and enhancing the understand

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Villumsen, S�ren, Jesper Frandsen, Jakob Kj�bsted Huusom, Xiaodong Liang, and Jens Abildskov. "Leveraging Pilot-Scale Data for Real-Time Analysis of Ion Exchange Chromatography." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.151475.

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This study evaluates the potential for computer-aided real-time monitoring and decision-making in pilot-scale ion-exchange chromatography operations using only historical data from the pilot-scale facility. Historical data of flow and conductivity were utilized from students running pilot-scale ion exchanges that resemble industrial ion exchange processes. A Lumped Rate Model (LRM) with a Steric Mass Action (SMA) isotherm was implemented and parameterized to characterize the fixed-bed column. The Discontinuous Galerkin Spectral Element Method (DGSEM), implemented in CADET-Julia, enabled effici

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Звіти організацій з теми "Isotherm Study"

Burroughs, Jedadiah, Jerry Paris, Charles Weiss, and Elizabeth McDevitt. Characterization and rheological examination of Charleroi Mix 2 paste constituents. Engineer Research and Development Center (U.S.), 2025. https://doi.org/10.21079/11681/49719.

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This technical report details the testing plan, methodology, and results used to characterize the paste constituent materials for Charleroi Concrete Mixture 2. Raw materials were characterized for physical and chemical properties of interest including chemical composition, mineralogy, particle size, and absorption capacity. Isothermal calorimetry was used to study the reactivity of constituent materials, and rotational rheology was used to study the impact of various constituent materials on the expected workability and fluidity of the composite paste.

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Gu, Tianbao, Samuel Simon Araya, and Vincenzo Liso. CFD Modeling of NH3 Synthesis on Ru-Based Catalyst for Hydrogen Storage and Transport. Aalborg University, 2024. https://doi.org/10.54337/aau772652211.

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Hydrogen is often considered as a promising alternative to fossil fuels, however its low boiling point and diffusivity cause a huge challenge for storage and transport. Therefore an alternative fuel like ammonia, containing 17 wt.% hydrogen with a higher boiling point, seems a very promising solution for hydrogen storage and transport. In this paper, ammonia synthesis via the most widely used Haber-Bosch process has been investigated. A computational fluid dynamics (CFD) model is developed for a lab-scale reactor, incorporating the modified Temkin kinetic model describing the complex catalytic

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Ley, M., Zane Lloyd, Shinhyu Kang, and Dan Cook. Concrete Pavement Mixtures with High Supplementary Cementitious Materials Content: Volume 3. Illinois Center for Transportation, 2021. http://dx.doi.org/10.36501/0197-9191/21-032.

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Fly ash is a by-product of coal combustion, made up of particles that are collected through various methods. This by-product has been used successfully as a partial Portland cement replacement in concrete, but the performance predictions of fly ash in concrete have been difficult to predict, especially at high fly ash replacement rates. This study focuses on comparing the performance of concrete with a variety of fly ash mixtures as well as the particle distribution and chemical makeup of fly ash. The slump, unit weight, compressive strength, and isothermal calorimetry tests were used to measu

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Han, Yoonjung, Jeffrey Bullard, Jedadiah Burroughs, Mine Ucak-Astarlioglu, and Jameson Shannon. Extending CEMHYD3D to simulate hydration of portland cement pastes with high volumes of silica fume. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/49196.

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Silica fume (SF) influences the hydration rate of Portland cement in different ways depending on the physical and chemical properties of the SF. This study reports the impact of SiO2 content (%), loss on ignition (%), and Brunauer–Emmett–Teller (BET) specific surface area on the hydration reaction of SF-cement paste mixtures. This study used five types of SFs with varying SiO2 content, loss on ignition (%), and particle morphology. Five SFs were mixed with Class H oil well cement at each of two different replacement levels (20% or 30% by mass), and the released heat of hydration was measured u

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Netzel, D. A., D. C. Lane, J. F. Rovani, J. D. Cox, J. A. Clark, and F. P. Miknis. Use of solid waste for chemical stabilization: Adsorption isotherms and {sup 13}C solid-state NMR study of hazardous organic compounds sorbed on coal fly ash. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10123623.

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Speranza, Vito, and Roberto Pantani. Investigation of isotactic polypropylene crystallization in processing conditions. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.msd.1.

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Flow and pressure applied during polymer transformation processes of semi-crystalline polymers can significantly affect the kinetics of crystallization, final morphology, and properties of the part. In commonly used polymer transformation processes, the molten polymer is subjected to high pressure and thermal stress, as well as intense shear and elongational flow fields. The effect of pressure on crystallization kinetics is significant from both scientific and technological perspectives since the polymer solidifies under high pressure in important industrial processing techniques. On the other

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Tummaruk, Padet, Kakanang Buranaamnuay, Wanpen Adulyanubap, Jinda Singlor, and Mongkol Techakumphu. Development of techniques for freezing boar semen. Chulalongkorn University, 2006. https://doi.org/10.58837/chula.res.2006.91.

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The objective of the present study was to investigate the feasibility of boar semen cryopreservation in Thailand and to investigate factors that could affect the boar semen quality after cryopreservation. Fifteen purebred boars (5 Landrace, 5 Yorkshire and 5 Duroc) from 2 commercial herds in Nakorn-prathom province were used in the experiment. Three ejaculates from each boar were collected with over one-week interval using gloved-hand technique. After collection, the semen was diluted with isothermal Beltsville thawing solution (BTS) extender. Diluted semen was held at 15 °C for 2 h and centri

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Adsorption isotherm special study. Final report. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/33105.

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