Adsorption Isotherm and Kinetics of Water Vapor Adsorption Using Novel Super-Porous Hydrogel Composites

2021 ◽  
Author(s):  
Hemant Mittal ◽  
Ali Al-Alili ◽  
Saeed Alhassan
Keyword(s):  
Water Vapor ◽  
Adsorption Isotherm ◽  
Water Vapor Adsorption ◽  
Vapor Adsorption ◽  
Hydrogel Composites ◽  
Kinetics Of ◽  
Porous Hydrogel

scholarly journals Kinetics of water vapor adsorption by vacuum-dried jujube powder

2017 ◽  
Vol 24 (4) ◽  
pp. 505-509
Author(s):  
Jun Ho Lee ◽  
Li Zuo
Keyword(s):  
Water Vapor ◽  
Water Vapor Adsorption ◽  
Vapor Adsorption ◽  
Jujube Powder ◽  
Kinetics Of

WATER VAPOR ADSORPTION ISOTHERM OF IMPORTED AND DOMESTIC MODIFIED MILK POWDERS AND CALCULATION OF ISOSTERIC HEAT

2007 ◽  
Author(s):  
SE-HEE KO ◽  
GANG-MO KIM ◽  
EUN-SU CHOI ◽  
GEUN-PYO HONG ◽  
MI-JUNG CHOI ◽  
...  
Keyword(s):  
Water Vapor ◽  
Adsorption Isotherm ◽  
Isosteric Heat ◽  
Water Vapor Adsorption ◽  
Vapor Adsorption

Diffusion Barriers in the Kinetics of Water Vapor Adsorption/Desorption on Activated Carbons

Langmuir ◽  
1998 ◽  
Vol 14 (14) ◽  
pp. 3858-3864 ◽  
Author(s):  
A. W. Harding ◽  
N. J. Foley ◽  
P. R. Norman ◽  
D. C. Francis ◽  
K. M. Thomas
Keyword(s):  
Water Vapor ◽  
Activated Carbons ◽  
Water Vapor Adsorption ◽  
Diffusion Barriers ◽  
Vapor Adsorption ◽  
Adsorption Desorption ◽  
Kinetics Of

Adsorption Isotherm and Kinetics of Water Vapor Adsorption Using Novel Super-Porous Hydrogel Composites

2020 ◽  
Author(s):  
Hemant Mittal ◽  
Ali Al-Alili ◽  
Saeed M. Alhassan
Keyword(s):  
Water Vapor ◽  
Adsorption Isotherm ◽  
Adsorption Capacity ◽  
Polymer Matrix ◽  
Adsorbed Water ◽  
Water Vapor Adsorption ◽  
Water Molecules ◽  
Vapor Adsorption ◽  
Highly Effective ◽  
Desiccant Material

Abstract Deliquescent salts have high water vapor adsorption capacity, but they dissolve in water by forming crystalline hydrates. That restricts their use in different water vapor adsorption applications. However, this limitation can be overcome by incorporating deliquescent salts within a polymer matrix which will keep the salt solution in place. Furthermore, if the polymer matrix used is also capable of adsorbing water vapor, it will further improve the overall performance of desiccant system. Therefore, in this work, we are proposing the synthesis and use of a highly effective new solid polymer desiccant material, i.e. superporous hydrogel (SPHs) of poly(sodium acrylate-co-acrylic acid (P(SA-co-AA)), and subsequently its composite with deliquescent salt, i.e. calcium chloride (CaCl2), to adsorb water vapors from humid air without the dissolution of the salt in the adsorbed water. Parental PAA-SPHs matrix alone exhibited an adsorption capacity of 1.02 gw/gads which increased to 3.35 gw/gads after incorporating CaCl2 salt in the polymer matrix. Both materials exhibited type-III adsorption isotherm and the experimental isotherm data fitted to the Guggenheim, Anderson and Boer (GAB) isotherm model. However, the adsorption kinetics followed linear driving force model which suggested that this extremely high adsorption capacity was due to the diffusion of water molecules into the interconnected pores of SPHs via capillary channels followed by the attachment of adsorbed water molecules to the CaCl2 salt present in the polymer matrix. Furthermore, the adsorbents were used successively for six cycles of adsorption with a very little loss in adsorption capacity. Therefore, the proposed polymer desiccant material overcomes the problem of dissolution of deliquescent salts and opens the doors for a new class of highly effective solid desiccant material.

Kinetics of Initial Water Vapor Adsorption by Inonotus obliquus Mushroom Powders

2007 ◽  
Vol 12 (2) ◽  
pp. 111-114
Author(s):  
Min-Ji Lee ◽  
Eun-Ju Seog ◽  
Jun-Ho Lee
Keyword(s):  
Water Vapor ◽  
Water Vapor Adsorption ◽  
Initial Water ◽  
Inonotus Obliquus ◽  
Vapor Adsorption ◽  
Kinetics Of

Pore-size resolved water vapor adsorption kinetics of white cement mortars as viewed from proton NMR relaxation

2018 ◽  
Vol 105 ◽  
pp. 31-43 ◽  
Author(s):  
Chunsheng Zhou ◽  
Fangzhou Ren ◽  
Qiang Zeng ◽  
Lizhi Xiao ◽  
Wei Wang
Keyword(s):  
Water Vapor ◽  
Pore Size ◽  
Adsorption Kinetics ◽  
Proton Nmr ◽  
Nmr Relaxation ◽  
Water Vapor Adsorption ◽  
Vapor Adsorption ◽  
White Cement ◽  
Cement Mortars ◽  
Kinetics Of
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