Academic literature on the topic 'Esterification kinetics'

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Journal articles on the topic "Esterification kinetics"

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Papamichael, Emmanuel M., and Panagiota-Yiolanda Stergiou. "Reformulated Kinetics of Immobilized Enzymes in Non-Conventional Media: A Case of Lipase-Catalyzed Esterification." Catalysts 14, no. 11 (2024): 830. http://dx.doi.org/10.3390/catal14110830.

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Several approaches have been reported that aim to achieve simplified standardizations of the kinetic behavior of immobilized enzymes under specific experimental conditions. We have previously published simplified rate equations based on the kinetics of immobilized enzymes. Recently, new experimental results have become available on the kinetics and mechanisms of esterifications catalyzed by immobilized lipase in unconventional media, and consequently, a reformulation of their kinetics is necessary. In this work, we report the development of simplified rate equations relating the aforementioned
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Matsumoto, M., and Y. Hasegawa. "Enzymatic Kinetics of Solvent-free Esterification with Bio-imprinted Lipase." Chemical & biochemical engineering quarterly 33, no. 4 (2020): 495–99. http://dx.doi.org/10.15255/cabeq.2019.1692.

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To avoid the use of compounds that burden the environment, a solvent-free enzymatic<br /> reaction was the focus of this study. Investigated were the catalytic activities and kinetics of lipases that were pretreated with carboxylic acids for the solvent-free esterification of propionic acid with isoamyl alcohol. The enhancements of the esterification yields and rates by the bio-imprinting effects of carboxylic acids were observed. We found no inhibition of isoamyl alcohol on the solvent-free enzymatic esterification, and obtained a large imprinting effect under a largely excessive amount
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Маzitоvа, А. К., G. К. Аminovа, and I. N. Vikharevа. "Modeling the kinetic regularities of the preparation of dibutoxyethyl adipates." SOCAR Proceedings, SI2 (December 30, 2021): 1–9. http://dx.doi.org/10.5510/ogp2021si200597.

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Additives are important components of PVC composites, providing polymer modification and retention of its properties throughout the entire period of operation. The development and application of environmentally friendly adipate plasticizers is urgent. The article presents the results of kinetic studies of the esterification of adipic acid with ethoxylated n-butanol of varying degrees of ethoxylation. The effect of various catalysts on the yield of the target ester and the degree of ethoxylation on the rate of the esterification reaction was studied. A mathematical model of the kinetics of the
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Satriana, Satriana, and Muhammad Dani Supardan. "Kinetic Study of Esterification of Free Fatty Acid in Low Grade Crude Palm Oil using Sulfuric Acid." ASEAN Journal of Chemical Engineering 8, no. 1 & 2 (2008): 1. http://dx.doi.org/10.22146/ajche.50112.

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The kinetics of the esterification of free fatty acids (FFA) in low grade crude palm oil (CPO) with methanol was studied. In this work, the effects of operational variables involved in the esterification process i.e. alcohol to oil molar ratio, reaction temperature, agitation speed and the initial amount of FFA of oil, were studied in the presence of sulphuric acid as catalyst at concentration of 1%-w. The experimental results show that the esterification process could lead to a practical and cost effective FFA removal unit in front of typical oil transesterification for biodiesel production.
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Magura, Miroslav, Ján Vojtko, Eva Zemanová, Alexander Kaszonyi, and Ján Ilavský. "Esterification kinetics of phenol with phosphoryl trichloride." Collection of Czechoslovak Chemical Communications 54, no. 3 (1989): 608–15. http://dx.doi.org/10.1135/cccc19890608.

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The liquid-phase esterification kinetics of phenol with POCl3 has been studied at isothermal conditions within the temperature interval from 90 to 110 °C. The esterification rate constants of the first, second, and third esterification steps and the activation energies of these steps have been calculated. The given system of competitive consecutive reactions can be described by a system of differential equations which has been solved by the Gauss-Newton optimization method of non-linear regression in the Marquardt modification. In the sequence of the first, second, and third step the esterific
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Hardhianti, Meiga Putri Wahyu, Rochmadi, and Muhammad Mufti Azis. "Kinetic Studies of Esterification of Rosin and Pentaerythritol." Processes 10, no. 1 (2021): 39. http://dx.doi.org/10.3390/pr10010039.

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Esterification of rosin with pentaerythritol produces rosin pentaerythritol ester (RPE) which is widely used in paint, coating, and pressure-sensitive and hot-melt adhesive industries. Although RPE has excellent valuable applications and has been industrially produced, studies on the reaction kinetics have not been widely reported in the present literature. This work proposed a kinetic study of RPE synthesis by including a series of consecutive reactions forming mono-, di-, tri-, and tetra-ester with decarboxylation of rosin as a side reaction in the kinetics model. For esterification, the rea
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Jawad, Ali Raad Mohammed, and Fadhil Abbas Hummadi. "Reaction Kinetics of Tert-Butanol Esterification." Journal of Engineering 20, no. 12 (2023): 71–87. http://dx.doi.org/10.31026/j.eng.2014.12.05.

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In this study, the kinetics for the reaction of tert-butanol esterification with acetic acid in the presence of Dowex 50Wx8 catalyst was investigated. The reaction kinetic experiments were conducted in 1000 milliliter vessel at temperatures ranged from 50 - 80 oC, catalyst loading 25-50 g/L, and the molar ratios of acetic acid to tert-butanol from 1/3 – 3/1. The reaction rate was found to increase with increasing temperature and catalyst loading. It was also found the conversion of the tert-butanol increases as the molar ratio of acid to alcohol increases from 1/3 – 3/1. The Non-ideality of th
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Sudrajat, Bagus Agang. "Kinetic Study of Esterification Using Ionic Liquid Catalyst." Reaktor 20, no. 3 (2020): 138–49. http://dx.doi.org/10.14710/reaktor.20.3.138-149.

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Biodiesel offers better combustion efficiency, lower sulfur content and aromatic compounds, higher cetane numbers than diesel fuel, biodegradable and renewable properties that are not possessed by conventional fuels such as diesel fuel. This study aims to study the esterification process of Cotton Seed oil using liquid ionic catalyst 1-Butyl-3-MethydidazoliumHexafluorophosphate (BMIM-PF6) which is simulated by MATLAB 2014 software to compare the kinetic model and the reaction order between the experiment and simulation results with 3% liquid ionic catalyst , then test the validity of the react
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Agustian, Egi, Jessica Jessica, Pudji Untoro, and Anny Sulaswatty. "Esterification of Waste Cooking Oil Using Ultrasonic: Kinetic Study." Jurnal Kimia Terapan Indonesia 20, no. 2 (2019): 57–68. http://dx.doi.org/10.14203/jkti.v20i2.397.

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Waste cooking oil (WCO) have a great potential as an alternative raw material for producing biodiesel. The literatures kinetic of the esterification of WCO in the presence of phosphoric acid catalyst with ultrasonic assisted are rare and most literatures used conventional method. This study aims to determine the optimum condition and the parameters of first and second order kinetics of the WCO esterification which was assisted by ultrasonic bath. Variables that used in this study are methanol/oil mole ratio, acid catalyst concentration and reaction temperature. The highest conversion was 42.08
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Meshalkin, V. P., M. R. Kozlovskiy, R. A. Kozlovskiy, I. A. Kozlovskiy, Ya A. Ibatov, and M. C. Voronov. "THE KINETICS OF ESTERIFICATION OF AMMONIUM LACTATE WITH <i>n</i>-BUTANOL." Доклады Российской академии наук. Химия, науки о материалах 511, no. 1 (2023): 88–94. http://dx.doi.org/10.31857/s2686953522600714.

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For the first time, the kinetics of the process of butyl lactate production by the interaction of ammonium lactate with n-butanol in the presence of water in the temperature range of 130–170°C in a closed system was studied as one of the stages of a new complex technology for the production of lactic acid and polylactide. The flow diagram of the process has been established. For the first time, a kinetic model of ammonium lactate esterification with n-butanol was proposed, considering the side formation of lactamide and the catalysis of esterification due to the acidity of lactic acid. The dev
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Dissertations / Theses on the topic "Esterification kinetics"

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Bankole, Kehinde Seun. "Uncatalyzed esterification of biomass-derived carboxylic acids." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/922.

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To shift from a petroleum-based to a biomass-based economy will require the development not only of biofuels, but also of biorenewable replacements for petroleum-derived chemicals. In this regard, environmentally friendly biomass-derived esters may serve as alternatives to fossil-derived chemicals such as toxic halogenated solvents and glycol ethers. Therefore, esterification of various carboxylic acids that find significant applications in the chemical, pharmaceutical, petrochemical, food, and cosmetic industries has been initiated by the chemical industry. At atmospheric condition, esterific
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Akbelen, Ozen Serap. "Kinetics Of Methyl Lactate Formation Over The Ion Exchange Resin Catalysts." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605027/index.pdf.

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iv The recovery of lactic acid from its dilute aqueous solutions is a major problem. The ester of lactic acid, namely, methyl lactate has a wide range of applications. The esterification of an aqueous solution of lactic acid with methanol is a reversible reaction. As excess of amount water is present in the reaction mixture, the conversion is greatly restricted by the chemical reaction equilibrium limitations. In this study the esterification kinetics of lactic acid with methanol both in the absence and presence of an ion exchange resin as a heterogeneous acid catalyst was investigated with is
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Vonner, Alexandre. "Étude et modélisation d'un procédé catalytique hétérogène d'estérification." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0175.

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Cette étude a pour objectif l'étude des processus impliqués dans la production de l'acrylate de 2-éthylhexyle, ester gras dérivé de l'acide acrylique. Cette réaction est accélérée par l'emploi d'un catalyseur solide, une résine acide sulfonée. Les interactions spécifiques des différents composés avec cette résine ont été étudiées à température ambiante. A 90°C, le couplage avec la cinétique de réaction a été analysé et modélisé en réacteur fermé. Un montage pilote spécifique conçu au laboratoire a permis la réalisation de réactions dans un réacteur en lit fixe, dont la structure tripartite per
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Oliveira, Samuel Alves de. "Avalia??o cin?tica e potencial do Nb2O5 obtido a partir de um complexo de ni?bio para forma??o do oleato de metila atrav?s da rea??o de esterifica??o do ?cido oleico." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15854.

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Made available in DSpace on 2014-12-17T15:01:35Z (GMT). No. of bitstreams: 1 SamuelAO_DISSERT.pdf: 6693517 bytes, checksum: 0be8bd399faaff3fe4e2da515c357889 (MD5) Previous issue date: 2014-01-30<br>Among the heterogeneous catalysts materials made from niobium show up as an alternative to meet the demand of catalysts for biodiesel production. This study aims to evaluate the potential of a heterogeneous catalyst derived from a complex of niobium in the reaction of methyl esterification of oleic acid. The catalyst was synthesized after calcination at different temperatures of a niobium complex
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Baco, Sindi. "Kinetic modeling for levulinic acid esterification in gamma-Valerolactone taking into account acid dissociation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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The first goal of this work is to demonstrate that using an aprotic polar solvent, such as γ- valerolactone instead of a protic polar solvent (i.e. ethanol, water), increases the yield of the esterification reaction of levulinic acid with ethanol, in presence of an acid catalyst. In fact, it is believed that an aprotic polar solvent can improve the catalytic activity of protons. The second goal is to study the influence of the variation of some parameters on the mentioned reaction. This was done by structuring the work in two sections: experimental and modelling. In the first section, two k
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Kadi, Mohamed El Amine. "Contribution à l'étude de l'influence des biocarburants et de leurs propriétés sur le fonctionnement des moteurs à combustion interne." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2020. http://www.theses.fr/2020IMTA0207.

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Le réchauffement climatique, dû essentiellement aux gaz à effet de serre, et l’augmentation de la demande mondiale en énergies fossiles ainsi que leur épuisement rapide, représentent des défis environnementaux et économiques mondiaux,qui ont incité la communauté mondiale à se tourner vers les énergies alternatives et renouvelables. Cette thèse s’inscrit dans cette optique de développement des énergies renouvelables. Le travail de recherche peut se résumer en deux grands axes, où le premier englobe le développement du procédé de production de biodiesel en continu avec différentes matières premi
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Teo, Hue Tat Ronnie. "Recovery of dilute acetic acid through esterification in a reactive distillation column." Thesis, Loughborough University, 2005. https://dspace.lboro.ac.uk/2134/24561.

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With ever-growing environmental concerns, petrochemical and fine chemical industries face an omnipresent issue in recovering acetic acid from its aqueous solutions. The recovery of acetic acid through the esterification process is a very viable option. However, esterification reactions are typically restricted by equilibrium limitations, and face challenges with product purification. Reactive distillation is an emerging technology that has an extremely attractive potential as a process alternative for carrying out equilibrium limited chemical reactions. Although the reactive distillation proce
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Leszczak, Jean-Pierre. "Synthèse d'esters de l'acide benzoïque par catalyse enzymatique en milieu hétérogène microaqueux." Grenoble INPG, 1998. https://theses.hal.science/tel-00841819.

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La synthèse d'esters de l'acide benzoïque par voie enzymatique en milieu hétérogène microaqueux est envisagée. Cette estérification est possible et est catalysée par la lipase de Candida rugosa en suspension dans un mélange hexane/toluène. Le toluène permet la solubilisation de l'acide benzoique. De nombreux paramètres influencent la synthèse des benzoates de méthyle et de butyle. La teneur en eau initiale agit uniquement sur la cinétique de réaction sans modifier de manière notable la position de l'équilibre de réaction. Il est préférable, dans la mesure du possible, de travailler à une activ
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Souza, Tatiane Fernandes Caetano. "Estudo comparativo de processos de produção de triacetina a partir da esterificação do glicerol." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-05092017-104546/.

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Foi realizado um estudo de desenvolvimento de projeto conceitual de uma unidade produtora de triacetina a partir de glicerol, como forma de aumentar a viabilidade de produção de biodiesel. A esterificação de glicerol com ácido acético envolve três reações de acetilação reversíveis consecutivas. Em cada etapa, água é produzida, resultando em conversão limitada e baixa seletividade. Uma forma de aumentar a seletividade da triacetina consiste em remover continuamente a água do meio reacional, de modo a alterar o equilíbrio. Foram considerados dois processos baseados em cinéticas diferentes. O pro
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Chaithanya, K. I. N. "Asymmetric synthesis of bioactive molecules via hydrolytic kinetic resolution of alkoxy epoxides, dihydroxylation of alkenes and synthetic methodologies involving oxidative cyclization of styrenes and esterification of aldehydes." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2014. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/1941.

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Book chapters on the topic "Esterification kinetics"

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Jermolovicius, L. A., B. Schneiderman, and J. T. Senise. "Alteration of Esterification Kinetics under Microwave Irradiation." In Advances in Microwave and Radio Frequency Processing. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-32944-2_40.

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Kalakuntala, Raju, Mallaiah Mekala, Bhoopal Neerudi, and Srinath Suranani. "Kinetic Studies for the Esterification of Propionic Acid with 1-Butanol Process with Ionic Resin Catalyst." In Advances in Chemical, Bio and Environmental Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-96554-9_15.

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Yusoff Azudin, Nurhazwani, and Syamsul Rizal Abd Shukor. "Solvent-Free Isoamyl Acetate Production via Enzymatic Esterification." In Kinetics of Enzymatic Synthesis. IntechOpen, 2019. http://dx.doi.org/10.5772/intechopen.81333.

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Zeng, Zuoxiang, Li Cui, Weilan Xue, Jing Chen, and Yu Che. "Recent Developments on the Mechanism and Kinetics of Esterification Reaction Promoted by Various Catalysts." In Chemical Kinetics. InTech, 2012. http://dx.doi.org/10.5772/38106.

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Machado, Guilherme, Marcelo Castier, Monique dos Santos, et al. "Reactive Distillation Applied to Biodiesel Production by Esterification: Simulation Studies." In Distillation Processes - From Conventional to Reactive Distillation Modeling, Simulation and Optimization [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102667.

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Reactive distillation is an operation that combines chemical reaction and separation in a single equipment, presenting various technical and economic benefits. In this chapter, an introduction to the reactive distillation process applied to the biodiesel industry was developed and complemented by case studies regarding the production of biodiesel through esterification a low-cost acid feedstock (corn distillers oil) and valorization of by-products (glycerol) through ketalization. The kinetic parameters of both reactions were estimated with an algorithm that performs the minimization of the qua
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Miguel, V. U., G. C. Trubiano, G. Pérez, D. O. Borio, and A. F. Errazu. "Kinetic analysis of enzymatic esterification of fatty acids and ethanol." In Reaction Kinetics and the Development and Operation of Catalytic Processes, Proceedings of the 3rd International Symposium. Elsevier, 2001. http://dx.doi.org/10.1016/s0167-2991(01)82022-x.

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Walton, David J., and J. Phillip Lorimer. "Step-growth polymers." In Polymers. Oxford University Press, 2000. http://dx.doi.org/10.1093/hesc/9780198503897.003.0004.

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This chapter evaluates step-growth polymers. In the case of step-growth (condensation) polymers, the mechanism is simply an extension of the normal organic condensation reactions in which a small molecule is expelled as the link is built. This is a different situation to the chain polymerizations described in the previous chapter. It is assumed that most step polymerizations involve bimolecular reactions as key mechanistic processes. The chapter then looks at the kinetics of step polymerization. It also considers the commercial preparations of step-growth polymers. The industrial preparation o
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Grzesik, M., and T. Gumula. "Kinetics models for esterification of levulinic acid with 2-ethylhexanol using different catalysts." In Reaction Kinetics and the Development and Operation of Catalytic Processes, Proceedings of the 3rd International Symposium. Elsevier, 2001. http://dx.doi.org/10.1016/s0167-2991(01)82010-3.

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Grzesik, M., J. Skrzypek, and M. Witczak. "Kinetic models for esterification of methacrylic acid using n-propanol and isopropanol." In Reaction Kinetics and the Development and Operation of Catalytic Processes, Proceedings of the 3rd International Symposium. Elsevier, 2001. http://dx.doi.org/10.1016/s0167-2991(01)82009-7.

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Aliyev, A. M., E. E. Sarijanov, Ö. Tunç Sava§çi, et al. "Selection of an active zeolite catalyst and kinetics of vapor phase esterification of acetic acid with ethyl alcohol." In Studies in Surface Science and Catalysis. Elsevier, 2002. http://dx.doi.org/10.1016/s0167-2991(02)80102-1.

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Conference papers on the topic "Esterification kinetics"

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Tonetti, Lorenzo G., and Ruy de Sousa. "Computational Intelligence Applied to the Mathematical Modeling of the Esterification of Fatty Acids with Sugars." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.190968.

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The mathematical modeling of enzymatic reactors for esterification of fatty acids with sugars in the production of biosurfactants has been a useful tool for studying and optimizing the process. In particular, artificial neural networks and fuzzy systems emerge as promising methods for developing models for those processes. In this work, regarding artificial neural networks application, coupling of networks to reactor mass balances was considered in hybrid models to infer reactant concentrations over time. Computationally, an algorithm was constructed incorporating material balances, neural rea
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Hidayat, Arif, Rochmadi, Karna Wijaya, and Arief Budiman. "Reaction kinetics of free fatty acids esterification in palm fatty acid distillate using coconut shell biochar sulfonated catalyst." In INTERNATIONAL CONFERENCE OF CHEMICAL AND MATERIAL ENGINEERING (ICCME) 2015: Green Technology for Sustainable Chemical Products and Processes. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4938341.

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Kusumaningtyas, Ratna Dewi, Naomi Ratrianti, Indah Purnamasari, and Arief Budiman. "Kinetics study of Jatropha oil esterification with ethanol in the presence of tin (II) chloride catalyst for biodiesel production." In INTERNATIONAL CONFERENCE ON ENGINEERING, SCIENCE AND NANOTECHNOLOGY 2016 (ICESNANO 2016). Author(s), 2017. http://dx.doi.org/10.1063/1.4968339.

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Davitadze, Nazi, and Irina Bejanidze. "VALORIZATION OF CITRUS FRUIT PROCESSING WASTE." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/5.1/s20.38.

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Currently, the food industry accounts for the largest amount of waste, a third of which is waste from the processing of fruits into natural fruit juices, the consumption of which has recently increased significantly due to health problems among the population. The transition to a healthier and more natural lifestyle involves reducing the consumption of soft drinks, which can contain high concentrations of sugars, artificial colors, preservatives, and increasing the production of natural juices. Studies were carried out on citrus fruits: mandarin, lemon, orange and pomelo. The possibility of va
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Jermolovicius, Luiz Alberto, Eduardo V. S. Pouzada, Edmilson R. Castro, Renata B. Nascimento, and José T. Senise. "FASTER PLASTICIZERS PRODUCTION BY MICROWAVE IRRADIATION." In Ampere 2019. Universitat Politècnica de València, 2019. http://dx.doi.org/10.4995/ampere2019.2019.9777.

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Plasticizers are esters used to confer plasticity to polymer goods. They are prepared by esterification between a carboxylic acid or anhydride and a heavy alcohol. Esterification is a very slow reaction and its batches may last more than 12 hours of processing [1]. An empirical study of maleic anhydride (MA) esterification with 2-ethyl hexanol (EHO) esterification was done to explore the non-thermal effect of microwaves [2]. In this work a complete 2^3 factorial design and a statistical regression were conducted aiming to stablish empirical complete chemical kinetic equations under microwave h
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Nourredine Abdoulmoumine, Nuttapol Lerkkasemsan, Foster Agblevor, and Luke Achenie. "Kinetic Study of Palmitic Acid Esterification on Sulfated Zirconium Oxide." In 2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010. American Society of Agricultural and Biological Engineers, 2010. http://dx.doi.org/10.13031/2013.29870.

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Yadav, Vishnu P., Rudra Palash Mukherjee, Kandi Bantraj, et al. "Kinetic Modeling of Esterification of Ethylene Glycol with Acetic Acid." In INTERNATIONAL CONFERENCE ON MODELING, OPTIMIZATION, AND COMPUTING (ICMOS 20110). AIP, 2010. http://dx.doi.org/10.1063/1.3516406.

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Wang, Yingying, Yanjun Jiang, Liya Zhou, and Jing Gao. "Enzymatic Esterification of Ammonium Lactate with Ethanol in Organic Solvent: Kinetic Study." In 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2010. http://dx.doi.org/10.1109/icbbe.2010.5517244.

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OSTASZEWSKI, RYSZARD. "The Studies on a new type of Enzymatic Dynamic Kinetic Resolution based on Esterification." In Sixth International Conference on Advances in Applied Science and Environmental Technology - ASET 2017. Institute of Research Engineers and Doctors, 2017. http://dx.doi.org/10.15224/978-1-63248-119-1-64.

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Chew, Sze Jia, Peng Yong Hoo, Ahmad Zuhairi Abdullah, et al. "Kinetic modelling and mechanism study for monolaurin esterification with 12-tungstophosphoric acid incorporated calcium modified SBA-15." In INTERNATIONAL SYMPOSIUM ON ADVANCED MATERIALS AND PROCESSING 2021 (ISAMP 2021). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0090713.

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