Thermodynamic Parameters of the Extraction of Three Nicotiana Species

Tasheva, Stanislava; Gandova, Vanya; Popova, Venelina; Ivanova, Tanya; Stoyanova, Albena

doi:10.1109/eeae49144.2020.9278782

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…where: R is the universal gas constant, T is the absolute temperature, N is Avogadro`s constant, h is the Planck`s constant, ΔS # is the activation entropy, ΔH # is the activation enthalpy, ΔG # is the activation free energy or Gibb`s energy according the transition theory [20,[22][23][24].…”

Section: Methodsmentioning

confidence: 99%

Cavitation water treatment with GE USM cleaner device

2022

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Cavitation treatment of surface and natural waters is a method for their microbiological purification. The aim of the present paper was to investigate the possibilities for the disinfection of natural waters by cavitation treatment with a Ge USM Cleaner device. A full factorial experiment of type 22 was performed. The factors influencing the water purification process were studied. Based on the obtained experimental results, the activation energy, the thermal effect due to the disinfection of the water and the rate constant of the process were calculated. The thermodynamic parameters of the transition state -Gibbs energy, enthalpy and entropy were also calculated. The analysis of the experimental results proveеd the effectiveness of the method used for natural water treatment.

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Section: Methodsmentioning

confidence: 99%

Cavitation water treatment with GE USM cleaner device

2022

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“…The molecular diffusion coefficient was calculated according to the Wilke -Chang equation given in [20,24].…”

Section: 16linear Regression Modelmentioning

confidence: 99%

Investigation of the thermodynamic and physicochemical properties of lavender oil (Lavandula angustifoliaMill.)-ethanol-water system

et al. 2021

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The thermodynamic and physicochemical properties of lavender oil (Lavandula angustifolia Mill.)-ethanol-water system were measured. The chemical composition of solutions of the lavender oil in 70%, 75%, 80%, 85%, 90%, and 95% ethanol was determined using GC/MS analysis. The main compounds in the solutions are oxygenated monoterpenes (β-linalool, terpinen-4-ol, α-terpineol, and linalyl acetate), followed by monoterpene hydrocarbons ((Z)-β-ocimene and (E)-β-ocimene), and sesquiterpene hydrocarbons (β-caryophyllene and (E)-β-farnesene). The ternary phase diagrams were constructed. By multiply linear regression model for surface tension prediction was applied. The thermodynamic and kinetic parameters of lavender oil – ethanol - water system were calculated (energy of Gibb’s, enthalpy, entropy, energy of activation, and coefficient of diffusion).

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Thermodynamic Parameters of the Extraction of Three Nicotiana Species

Cited by 2 publications

References 7 publications

Cavitation water treatment with GE USM cleaner device

Cavitation water treatment with GE USM cleaner device

Investigation of the thermodynamic and physicochemical properties of lavender oil (Lavandula angustifoliaMill.)-ethanol-water system

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