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Adsorption in Perfect Mixing Tank – Comparison of Exact and Approximate Kinetic Models

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Kupiec K., Gwadera M., Larwa B.
Chemical and Process Engineering
|
2014
|
vol. 35
|
issue 3
277-291
EN
Periodic adsorption in a perfect mixing tank of a limited volume was considered. It was assumed that the adsorption rate is limited by diffusion resistance in a pellet. The approximate model of diffusion kinetics based on a continued fraction approximation was compared with the exact analytical solution. For the approximate model an algorithm was developed to determine a temporal variation of the adsorbate concentration in the pellet. The comparison was made for different values of the adsorbent load factor. In the numerical tests different shapes of pellets were considered. Both the numerical tests as well as our own experimental results showed that the approximate model provides results that are in good agreement with the exact solution. In the experimental part of this work adsorption of p-nitrophenol and acetic acid from aqueous solutions on cylindrical pellets of activated carbon was conducted.
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Adsorption in Perfect Mixing Tank – Comparison of Exact and Approximate Kinetic Models

80%
Kupiec K., Gwadera M., Larwa B.
Chemical and Process Engineering
|
2014
|
issue 3
first rewind previous Page / 1 next fast forward last
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