The Simulation of Cyclic Thermal Swing Adsorption (TSA) Process

It has been widely recognized that trihalomethanes (THMs) in drinking water pose a risk to human health. THMs can be removed to a certain extent by the conventional point-of-use (POU) unit which is composed of activated carbon (AC) and microfilter. But it's life on THMs is relatively shorter than on residual chlorine or musty odor. To extent the life of AC adsorber, pressure and thermal swing adsorption (PTSA) was applied by preferential regeneration of chloroform. PTSA was effective to remove THMs, especially chloroform. Adsorption isotherms of chloroform at 25 and 70°C showed a remarkable difference so that thermal swing was considered effective. Chloroform was also desorbed by reducing pressure. By vacuum heating at 70°C, chloroform was almost desorbed from AC and reversible adsorption was considered possible. A prototype of POU unit with PTSA was proposed. Regeneration mode would consist of dewatering, vacuum heating and cooling (backwashing). The unit was maintained in bacteriostatic condition and could be used for a long time without changing an AC cartridge.

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Thermal-Swing Adsorption of Europium(III) with Poly(N-isopropylacrylamide) Combined with an Acidic Extractant

Solvent Extraction Research and Development Japan ◽

10.15261/serdj.21.37 ◽

2014 ◽

Vol 21 (1) ◽

pp. 37-45 ◽

Cited By ~ 2

Author(s):

Syouhei NISHIHAMA ◽

Satomi MATSUNAGA ◽

Seitaro TAKAYAMA ◽

Tokie OOKUBO ◽

Kazuharu YOSHIZUKA ◽

...

Keyword(s):

Thermal Swing Adsorption

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Feasibility of Pressure Swing Adsorption (PSA) Plus Thermal Swing Adsorption (TSA) Technology For Odorant Separation - A Process Design Approach

International Journal of Chemical Reactor Engineering ◽

10.1515/1542-6580.2665 ◽

2012 ◽

Vol 10 (1) ◽

Cited By ~ 2

Author(s):

Yaw-Bee Ker ◽

Charng-Cherng Chyau ◽

Hui-Er Wang ◽

Kuan-Chou Chen ◽

Robert Y. Peng

Keyword(s):

Essential Oils ◽

Gaseous Phase ◽

Process Design ◽

Pressure Swing Adsorption ◽

Petroleum Refining ◽

Volatile Components ◽

Whole Process ◽

Boiling Points ◽

Thermal Swing Adsorption ◽

Pressure Swing

Abstract PSA (pressure swing adsorption) has been a well known commercialized process in the petroleum refining engineering. With the consideration that the volatiles, odorants or essential oils in a variety of plants and herbs may be separated taking the advantage of PSA, we present in this article a newly designed process: PSA plus TSA (thermal swing adsorption). As the odorants or essential oils are unlike the volatile components in the petroleum, being characteristic with higher boiling points and able to become liquefied during the PSA treatment, thereby a TSA technique is necessarily incorporated, so that the whole process can be operated in an entirely gaseous phase to facilitate the separation.

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Rapid thermal swing adsorption process in multi-beds scale with sensible heat recovery for continuous energy-efficient CO2 capture

Chemical Engineering Journal ◽

10.1016/j.cej.2019.123656 ◽

2020 ◽

Vol 392 ◽

pp. 123656 ◽

Cited By ~ 1

Author(s):

Wonho Jung ◽

Sunghyun Park ◽

Kwang Soon Lee ◽

Jae-Deok Jeon ◽

Hyung Keun Lee ◽

...

Keyword(s):

Co2 Capture ◽

Energy Efficient ◽

Heat Recovery ◽

Adsorption Process ◽

Sensible Heat ◽

Continuous Energy ◽

Thermal Swing Adsorption

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Gas Adsorption Operations: Equilibrium, Kinetics, Column Dynamics and Design

Adsorption Science & Technology ◽

10.1177/026361748500200202 ◽

1985 ◽

Vol 2 (2) ◽

pp. 69-87 ◽

Cited By ~ 8

Author(s):

S. Sircar ◽

A. L. Myers

Keyword(s):

Numerical Solutions ◽

Gas Adsorption ◽

Separation And Purification ◽

Transfer Coefficients ◽

Gaseous Mixtures ◽

Thermal Swing Adsorption ◽

Special Cases ◽

Column Dynamics ◽

Pressure Swing ◽

Energy And Momentum

Separation and purification of gaseous mixtures by adsorption has become a valuable tool in the chemical industry. Gas adsorption operations require information on both equilibrium and kinetics. Analytical equations are available to describe the adsorption of pure gases; mixture equilibria can be predicted by thermodynamic methods. Kinetic data suitable for column design can be expressed in terms of overall mass transfer coefficients. Design of columns for thermal swing adsorption (TSA) or pressure swing adsorption (PSA) processes requires the simultaneous solution of the partial differential equations for the material, energy and momentum balances describing the dynamics of adsorption in columns. Numerical solutions are usually required, but some useful analytical solutions are available for special cases.

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