Sorption onto insoluble β-cyclodextrin polymer for 2,4-dinitrophenol

Srinivasan, K.; Stalin, T.

doi:10.1007/s10847-011-0059-7

Cited by 6 publications

(2 citation statements)

References 38 publications

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“…The slight increase at pH = 7 could be due to some of CDP may get hydrolyzed, dissociated and reverted back to water-soluble cyclodextrin (CD), which in turn the geosmin molecule formed inclusion complex with CD, increasing the sorption effect. Due to this reason the sorption capacity is higher in pH = 7 [6].…”

Section: Effect Of Phmentioning

confidence: 97%

Geosmin Sorption on Cyclodextrin Polymers

Gutierrez¹,

Whangchai²,

Nomura³

2013

IJG

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Geosmin is one of the major causative compounds of earthy-musty odor and taste (off-flavor) in drinking water (lakes) and in farmed fish. In this study, the sorption of cyclodextrin polymers (CDPs) towards geosmin in aqueous solution was investigated. Sorption kinetics, the effect of solution pH and contact time on the sorption capability of α-, β-and γ-cyclodextrin polymers was discussed. Results disclosed that the sorption of geosmin by the CDPs followed the Ho and McKay kinetic mechanism with the liquid film diffusion as the rate-determining step. Both β-CDP and γ-CDP exhibit high removal efficiencies of 93.4% and 96%, respectively, within 240 minutes at 25˚C and pH 7, whilst α-CDP was not effective, removing only 40% geosmin, at an initial concentration of 5 µg•L −1 and 5 g•L −1 of CDP dose. The cyclodextrin polymers can adapt to a wide range of pH from 3.0 to 11.0 for geosmin adsorption with pH 7.0 as optimum. Results indicate that these sorbents demonstrate significant potential in reducing the concentration of geosmin in water that presents taint problems in both drinking water and fish.

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Section: Effect Of Phmentioning

confidence: 97%

Geosmin Sorption on Cyclodextrin Polymers

Gutierrez¹,

Whangchai²,

Nomura³

2013

IJG

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“…Insoluble cyclodextrin polymers can be obtained by cross-linking using an appropriate cross-linking agent, among which epichlorohydrin is one of the most commonly employed. , One of the main uses of these materials is in environmental applications as they are able to retain industrial wastewater pollutants. , Several studies have been performed to remove aromatic pollutants. − The main mechanisms of sorption are adsorption in the polymer network and inclusion in the cavity of the cyclodextrin units …”

Section: Introductionmentioning

confidence: 99%

Sorption and Release of Natural Phenolic Antioxidants in Different Cyclodextrin Polymers

García-Padial

Martínez-Ohárriz

Isasi

et al. 2017

J. Agric. Food Chem.

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The sorption and release of tyrosol and caffeic acid, two biophenolic antioxidants with known health benefits, in different insoluble cyclodextrin polymers have been studied. Cyclodextrin polymers were synthesized by cross-linking β-cyclodextrin or 50:50 w/w nominal mixtures of α- and β-cyclodextrins using either epichlorohydrin (EP) or toluene-2,4-diisocyanate (TDI) as cross-linking agents. An analogous sucrose polymer was prepared using EP as cross-linking reagent. Freundlich isotherms and isosteric heats of sorption for tyrosol and caffeic acid in the insoluble β-cyclodextrin polymer cross-linked with epichlorohydrin at 50 °C were obtained and discussed. Finally, the release of tyrosol and caffeic acid has been studied from loaded polymer disks, the microstructures of which were characterized by mercury intrusion porosimetry. Caffeic acid shows greater affinity than tyrosol for the polymeric matrices as it presents a higher sorption and a lower and slower release. However, tyrosol has a higher isosteric heat of sorption for low coverages.

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Pervaporation performance of surface-modified zeolite/PU mixed matrix membranes for separation of phenol from water

Zhang

Zhao

et al. 2017

Iran Polym J

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Sorption onto insoluble β-cyclodextrin polymer for 2,4-dinitrophenol

Cited by 6 publications

References 38 publications

Geosmin Sorption on Cyclodextrin Polymers

Geosmin Sorption on Cyclodextrin Polymers

Sorption and Release of Natural Phenolic Antioxidants in Different Cyclodextrin Polymers

Pervaporation performance of surface-modified zeolite/PU mixed matrix membranes for separation of phenol from water

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