Adsorption isotherm and kinetics of water vapors on novel superporous hydrogel composites

2020 ◽  
Vol 299 ◽  
pp. 110106 ◽  
Author(s):  
Hemant Mittal ◽  
Ali Al Alili ◽  
Saeed M. Alhassan
Keyword(s):  
Adsorption Isotherm ◽  
Water Vapors ◽  
Hydrogel Composites ◽  
Kinetics Of ◽  
Superporous Hydrogel

Hydroxyapatite containing superporous hydrogel composites: synthesis and in-vitro characterization

2007 ◽  
Vol 19 (2) ◽  
pp. 729-735 ◽  
Author(s):  
T. Tolga Demirtaş ◽  
Ayşe Gönen Karakeçili ◽  
Menemşe Gümüşderelioğlu
Keyword(s):  
In Vitro Characterization ◽  
Hydrogel Composites ◽  
Superporous Hydrogel

scholarly journals Polyaspartate-Ionene/Na+-Montmorillonite Nanocomposites as Novel Adsorbent for Anionic Dye; Effect of Ionene Structure

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2843
Author(s):  
Hany El-Hamshary ◽  
Abeer S. Elsherbiny ◽  
Mohamed H. El-Newehy ◽  
Mohamed E. EL-Hefnawy
Keyword(s):  
Adsorption Isotherm ◽  
Antimicrobial Agents ◽  
Organic Pollutant ◽  
Bet Surface Area ◽  
Sodium Montmorillonite ◽  
Freundlich Model ◽  
Intraparticle Diffusion Model ◽  
Pseudo Second Order ◽  
Kinetics Of ◽  
Acid Blue

Surface modification of sodium montmorillonite (Na+-Mt) was performed using antimicrobial agents to produce an ecofriendly nanocomposite. The adsorption performance of the nanocomposite has been evaluated for the removal of Acid Blue 25 dye (AB25) as a model organic pollutant from wastewater. Sodium montmorillonite (Na+-Mt) was modified with three different ionene compounds through ion exchange, and further modified through reaction with polyaspartate to provide three ecofriendly nanocomposites (denoted ICP-1–3). The nanocomposites were characterized using FTIR, PXRD, TEM, SEM, and BET surface area. The adsorption isotherm of AB25 onto ICP-1, ICP-2 and ICP-3 was analyzed using the Langmuir, Freundlich, and Dubinin–Radushkevich (D–R) models. The adsorption isotherm was found to be best fitted by a Freundlich model. The thermodynamic parameters were calculated. The kinetics of the adsorption data were analyzed and the adsorption behavior was found to obey pseudo-second-order kinetics, and the intraparticle diffusion model. The adsorption mechanism was studied by FTIR.

Gastric retention properties of superporous hydrogel composites

2000 ◽  
Vol 64 (1-3) ◽  
pp. 39-51 ◽  
Author(s):  
Jun Chen ◽  
William E Blevins ◽  
Haesun Park ◽  
Kinam Park
Keyword(s):  
Gastric Retention ◽  
Hydrogel Composites ◽  
Superporous Hydrogel

Adsorption isotherm and kinetics of paraquat removal using activated carbon/iron oxide composite material

2016 ◽  
Vol 17 (3/4) ◽  
pp. 189
Author(s):  
Jirapat Ananpattarachai ◽  
Pattra Aphaiphak ◽  
Rokarn Ard ong ◽  
Puangrat Kajitvichyanukul ◽  
Yung Tse Hung
Keyword(s):  
Composite Material ◽  
Activated Carbon ◽  
Iron Oxide ◽  
Adsorption Isotherm ◽  
Oxide Composite ◽  
Carbon Iron ◽  
Kinetics Of ◽  
Oxide Composite Material

scholarly journals Adsorption and Adsorption Kinetics of the Vapours of Polar Substances on Microporous Carbon Adsorbents

2000 ◽  
Vol 18 (3) ◽  
pp. 205-234 ◽  
Author(s):  
Roman Wojsz
Keyword(s):  
Adsorption Isotherm ◽  
Adsorption Kinetics ◽  
Structural Heterogeneity ◽  
Polar Compounds ◽  
Microporous Carbon ◽  
Carbon Adsorbents ◽  
Isotherm Equations ◽  
Kinetics Of ◽  
Microporous Carbon Adsorbents ◽  
Association Of Molecules

The applicability of the Polanyi–Dubinin (PD) potential theory to the adsorption of the vapours of polar and non-polar compounds on to microporous carbon adsorbents has been evaluated. Expressions describing the changes in the fundamental thermodynamic functions resulting from the modified PD theory have been presented. These dependencies are related to the adsorption isotherm equations with the inclusion of parameters for both the structural heterogeneity and the association of molecules.

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