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Absorption of ethylene from ethylene-ethane gaseous mixture by AgNO3 solution in a semi-continuous process

Authors

  • H. R. Mortaheb,

    Corresponding author
    1. Faculty of Chemical Engineering and Physical Chemistry, Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
    • Faculty of Chemical Engineering and Physical Chemistry, Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran.
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  • M. Mafi,

    1. Faculty of Chemical Engineering and Physical Chemistry, Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
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  • A. Zolfaghari,

    1. Faculty of Chemical Engineering and Physical Chemistry, Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
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  • B. Mokhtarani,

    1. Faculty of Chemical Engineering and Physical Chemistry, Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
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  • N. Khodapanah,

    1. Faculty of Chemical Engineering and Physical Chemistry, Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
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  • F. Ghaemmaghami

    1. Faculty of Chemical Engineering and Physical Chemistry, Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
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Abstract

Ethylene absorption from an ethylene–ethane gaseous mixture in the silver nitrate solution is studied at different temperatures and concentrations. Unlike the previous studies, in which the absorption was studied by batch processes, a semi-continuous process is applied in the present research. The results show that increase in temperature reduces the amount of absorbed ethylene and absorption time. The amount of absorbed ethylene is increased in solutions with higher concentrations of AgNO3, whereas the mole ratio of absorbed ethylene per silver nitrate is decreased by increasing the AgNO3 concentration. Total absorption is modelled as a function of the temperature and concentration of absorbing solution. The estimated values from the model are in good agreement with the experimental data.

Abstract

L'absorption du mélange gazeux de l'éthylène-éthane dans une solution de nitrate d'argent est étudiée à différentes températures et concentrations. Contrairement aux études antérieures lors desquelles l'absorption était étudiée par procédés en lots, un procédé semi-continu a servi pour la recherche actuelle. Les résultats indiquent qu'une hausse de température réduit la quantité d'éthylène absorbée et le temps d'absorption. La quantité d'éthylène absorbée est augmentée dans les solutions ayant des concentrations de AgNO3 plus élevées alors que le ratio de moles d'éthylène absorbés par nitrate d'argent est diminué en augmentant la concentration de AgNO3. L'absorption totale est modélisée en tant que fonction de la température et de la concentration de la solution absorbante. Les valeurs estimées à partir du modèle appuient les données expérimentales.

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