Insights of water vapor sorption onto polymer based sorbents

Sultan, Muhammad; El-Sharkawy, Ibrahim I.; Miyazaki, Takahiko; Saha, Bidyut Baran; Koyama, Shigeru; Maruyama, Tomohiro; Maeda, Siro; Nakamura, Takashi

doi:10.1007/s10450-015-9663-y

Cited by 51 publications

(52 citation statements)

References 41 publications

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“…The applicability of Guggenheim‐Anderson‐De Boer (GAB) model of multilayer adsorption to the sorption isotherms of gasses in glassy polymers and of vapors in rubbery polymers, adsorbents and bio‐based products has been shown in literature . Further, the applicability of the GAB model to the sorption isotherms of vapors in glassy polymers was reported in literature .…”

Section: Introductionmentioning

confidence: 99%

Sorption of methanol, dimethyl carbonate, methyl acetate, and acetone vapors in CTA and PTMSP: General findings from the GAB Analysis

Vopička

Pilnáček

Číhal

et al. 2015

J. Polym. Sci. Part B: Polym. Phys.

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Sorption of vapors of four organic compounds in two glassy polymers, cellulose triacetate (CTA) and poly [(trimethylsilyl)propyne] (PTMSP), has been reported and analyzed in terms of Guggenheim-Anderson-De Boer (GAB) model. These two structurally and physicochemically different glassy polymers both independently showed that one sorption site was formed by about three monomeric units. This finding held true for vapors of all characterized compounds; that is, for methanol, for its derivatives dimethyl carbonate and methyl acetate, and for acetone. The "rule of three" might thus also be applicable to other sorbates and glassy polymers. Further, an original modification of the GAB model for the sorption of alcohols in PTMSP was derived and successfully tested. Overall, the analyses of the sorption isotherms, heats of sorption and diffusion coefficients supported the view that the sorption of vapors in glassy polymers has adsorptive nature.

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Section: Introductionmentioning

confidence: 99%

Sorption of methanol, dimethyl carbonate, methyl acetate, and acetone vapors in CTA and PTMSP: General findings from the GAB Analysis

Vopička

Pilnáček

Číhal

et al. 2015

J. Polym. Sci. Part B: Polym. Phys.

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“…The study comprises different adsorbents such as polymer-based, carbon-based, and conventional silica-gel. The polymer-based adsorbents include polymer sorbent-I (PS-I), polymer sorbent-II (PS-II) [23][24][25] . The carbon-based adsorbents include activated carbon powder (ACP) and activated carbon fiber (ACF) 7,8,26) .…”

Section: Methodsmentioning

confidence: 99%

“…The carbon-based adsorbents include activated carbon powder (ACP) and activated carbon fiber (ACF) 7,8,26) . The particle size of these adsorbents is given in Table 1 7,8,23,24) . All these adsorbents have specific adsorption characteristics.…”

Section: Methodsmentioning

confidence: 99%

Study on Water-Vapor Adsorption onto Polymer and Carbon Based Adsorbents for Air-Conditioning Applications

Mahmood¹,

Sultan²,

Miyazaki³

2019

Evergreen

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Carbon-based materials have shown huge potential in various adsorption based applications e.g. water and wastewater treatment. In addition, these are successfully utilized for various (methanol-, ethanol-, and ammonia-based) closed-cycle adsorption heat pump systems. Significance of polymers is also well-known in drug/medical industry, and therefore extensively studied for various aspects of adsorption. The study comprises two kinds of polymer and carbonbased materials for potential airconditioning applications. Water vapor adsorption comparison has been made among polymer, carbon-based and conventional hydrophilic adsorbent i.e. silica-gel. The size of desiccant unit in desiccant airconditioning (DAC) system has been determined and compared accordingly. Results showed that polymer sorbent (PS-II) can reduce the desiccant unit size (in the DAC system) by 2-3 times as compare to conventional silica-gel under particular conditions while utilizing it intelligently.

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“…The daily average global insolation is about 5-7 kWh/m 2 /day with persistence factor of 85 percent. Such insolation is available on 95% areas of the country and has potential of solar energy about 18-25 MJ/m 2 /day 18) . A recent research reported that Pakistan due to its geographical location and environmental conditions has solar energy potential of about 2900 GWh 17) .…”

Section: Tablementioning

confidence: 99%

Desiccant Air-Conditioning System for Storage of Fruits and Vegetables : Pakistan Preview

et al. 2016

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In the present study the desiccant airconditioning system has been investigated for the on-farm storage of fruits and vegetables in Pakistan. In this regard, ideal storage zone for the studied agricultural products is established in order to ascertain the system applicability. The dehumidification performance of the silica-gel based desiccant wheel has been analysed with low regeneration temperature (50°C) by using the model of Beccali et. al. Three environmental conditions (A: highly humid, B: moderately humid & C: less humid) are considered for the analysis of desiccant airconditioning system. The latent and sensible loads of airconditioning are achieved by the silica-gel desiccant wheel dehumidification and Maisotsenko cycle evaporative cooling respectively. The results of the study envisaged that desiccant wheel performs higher dehumidification in climatic condition 'A' due to higher ambient air relative humidity as compared to the other climatic conditions. However, higher heat energy is required for its regeneration in the climatic condition 'A'. This study concluded that the desiccant airconditioning system can be efficiently used for on-farm storage of fruits and vegetables in Pakistan. Also, the renewable energy sources of the country like solar energy and bio-gas can be potentially harvested for the regeneration of desiccant wheel. The study further proposes the use of hybrid desiccant airconditioning system where standalone DAC system cannot achieve the sensible load.

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Insights of water vapor sorption onto polymer based sorbents

Cited by 51 publications

References 41 publications

Sorption of methanol, dimethyl carbonate, methyl acetate, and acetone vapors in CTA and PTMSP: General findings from the GAB Analysis

Sorption of methanol, dimethyl carbonate, methyl acetate, and acetone vapors in CTA and PTMSP: General findings from the GAB Analysis

Study on Water-Vapor Adsorption onto Polymer and Carbon Based Adsorbents for Air-Conditioning Applications

Desiccant Air-Conditioning System for Storage of Fruits and Vegetables : Pakistan Preview

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