Characterization of carbon dioxide separation membrane with polycation nano-layers

2013 ◽  
Vol 1492 ◽  
pp. 137-142
Author(s):  
Tatsuya Funaoka ◽  
Yusuke Daiko ◽  
Atsushi Mineshige ◽  
Tetsuo Yazawa
Keyword(s):  
Carbon Dioxide ◽  
Silica Film ◽  
Ideal Gas ◽  
Layer By Layer ◽  
Carbon Dioxide Absorption ◽  
Carbon Dioxide Separation ◽  
Separation Membrane ◽  
Ultrathin Layers ◽  
Assembly Technique ◽  
Unmodified Silica

ABSTRACTUltrathin layers of positively charged poly(diallyl dimethylammonium) choloride (PDDA) and negatively charged poly(sodium 4-styrenesulfonate) (PSS) were deposited on SiO2/ polyethylene glycol hybrid membranes via layer-by-layer assembly technique, and carbon dioxide absorption/separation properties were investigated. Quartz crystal microbalance (QCM) measurements revealed that both PDDA and PSS nanocoatings have a good affinity for CO2 absorption. PDDA-deposited film shows about two times higher CO2 ideal gas selectivity compared with unmodified silica film.

Influence of the amine alkyl-chain upon carbon dioxide absorption in G-L-L reactor

2020 ◽  
Vol 18 (9) ◽  
Author(s):  
Uxía Brea ◽  
Diego Gómez-Díaz ◽  
José M. Navaza
Keyword(s):  
Carbon Dioxide ◽  
Energy Cost ◽  
Alkyl Chain ◽  
Carbon Dioxide Absorption ◽  
Absorption Mechanism ◽  
Chemical Absorption ◽  
Carbon Dioxide Separation ◽  
Liquid Phases ◽  
Different Types ◽  
Liquid Systems

AbstractPresent work analyzes the behavior of several gas-liquid-liquid systems for carbon dioxide separation using chemical absorption. The type of amine center in a solvent with two liquid phases (organic and aqueous) shows a high importance in relation to the overall behavior. The experimental results for these solvents have been compared with a previous study using octylamine in the chemical solvent because it has shown suitable results for carbon dioxide loading, absorption rate and energy cost associated to solvent regeneration. Present study analyzes the carbon dioxide absorption mechanism in multiphasic reactors (specifically G-L-L) using different types of amines in order to understand the overall behavior that involves steps of mass transfer and chemical reaction.

Stabilization of starch-based microgel-lysozyme complexes using a layer-by-layer assembly technique

2017 ◽  
Vol 214 ◽  
pp. 213-217 ◽  
Author(s):  
Bao Zhang ◽  
Yi Pan ◽  
Hanqing Chen ◽  
Tengfei Liu ◽  
Han Tao ◽  
...  
Keyword(s):  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Assembly Technique ◽  
Layer Assembly

scholarly journals Encapsulation of Phase Change Materials Using Layer-by-Layer Assembled Polyelectrolytes

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Qiangying Yi ◽  
Gleb B. Sukhorokov ◽  
Jin Ma ◽  
Xiaobo Yang ◽  
Zhongwei Gu
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Low Cost ◽  
Sodium Dodecyl ◽  
Layer By Layer ◽  
Latent Heat Storage ◽  
Good Thermal Stability ◽  
Lbl Assembly ◽  
Acid Sodium Salt ◽  
Assembly Technique

Phase change materials absorb the thermal energy when changing their phases (e.g., solid-to-liquid) at constant temperatures to achieve the latent heat storage. The major drawbacks such as limited thermal conductivity and leakage prevent the PCMs from wide application in desired areas. In this work, an environmentally friendly and low cost approach, layer-by-layer (LbL) assembly technique, was applied to build up ultrathin shells to encapsulate the PCMs and therefore to regulate their changes in volume when the phase change occurs. Generally, the oppositely charged strong polyelectrolytes Poly(diallyldimethylammonium chloride) (PDADMAC) and Poly(4-styrenesulfonic acid) sodium salt (PSS) were employed to fabricate multilayer shells on emulsified octadecane droplets using either bovine serum albumin (BSA) or sodium dodecyl sulfate (SDS) as surfactant. Specifically, using BSA as the surfactant, polyelectrolyte encapsulated octadecane spheres in size of ∼500 nm were obtained, with good shell integrity, high octadecane content (91.3% by mass), and good thermal stability after cycles of thermal treatments.

Effect of silica nanoparticles on carbon dioxide separation performances of PVA/PEG cross-linked membranes

2021 ◽  
Author(s):  
Muhammad Rizwan Dilshad ◽  
Atif Islam ◽  
Bilal Haider ◽  
Muhammad Sajid ◽  
Aamir Ijaz ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Silica Nanoparticles ◽  
Carbon Dioxide Separation ◽  
Separation Performances
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