The Adsorption of Benzo-15-Crown-5 Ether from Water onto Carbon Surfaces

Rochester, Colin H.; Strachan, Alistair

doi:10.1006/jcis.1996.0041

Cited by 7 publications

(4 citation statements)

References 3 publications

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“…Despite these facts, the Langmuir model has proved to be a useful tool to study a great variety of systems. [9,10,12,16,17] Accordingly, we have fitted our experimental results to the Langmuir equation:…”

Section: Resultsmentioning

confidence: 97%

Removal of an Ionic Surfactant From Wastewater by Carbon Blacks Adsorption

González-Garcı́a

González-Martı́n

Gallardo-Moreno

et al. 2002

Separation Science and Technology

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The adsorption of an ionic surfactant, sodium dodecyl sulfate (SDS), from aqueous solution onto six carbon blacks with different surface characteristics has been studied in various ranges of low concentrations. The process can be related to types of interactions that are always the same since the adsorption in these systems depends mainly on the porosity of the samples but not on the chemical composition of the surface. However, adsorption progresses follows two processes: the first one related to the adsorption of SDS into the narrowest pores with a suitable width, and the second one related to adsorption of SDS onto a more open surface. 2823

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Section: Resultsmentioning

confidence: 97%

Removal of an Ionic Surfactant From Wastewater by Carbon Blacks Adsorption

González-Garcı́a

González-Martı́n

Gallardo-Moreno

et al. 2002

Separation Science and Technology

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“…Shown as a black spectrum in Fig. SD-1 (Supplementary Information), FTIR spectrum for regenerated 100% CEL exhibits distinct bands attributed to O—H stretching vibrations (3650–3200 cm −1 ), aliphatic sp 3 C—H stretch (2900 cm −1 ), C—O—C stretching vibration (1163 cm −1 ) and C—O stretch at C-3 position (1024 cm −1 ) [22,23,36–39]. Again, for the [CEL + B15C5] composites, intensity of three bands due to aromatic C-H groups at ~3062 cm −1 , ~1580 cm −1 and ~739 cm −1 grew concomitantly with the concentration of B15C5 in the composites.…”

Section: Resultsmentioning

confidence: 99%

Synergistic adsorption of heavy metal ions and organic pollutants by supramolecular polysaccharide composite materials from cellulose, chitosan and crown ether

Mututuvari

Tran

2014

Journal of Hazardous Materials

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We have developed a simple one-step method to synthesize novel supramolecular polysaccharide composites from cellulose (CEL), chitosan (CS) and benzo-15-crown 5 (B15C5). Butylmethylimidazolium chloride [BMIm+Cl−], an ionic liquid (IL), was used as a sole solvent for dissolution and preparation of the composites. Since majority of [BMIm+Cl−] used was recovered for reuse, the method is recyclable. The [CEL/CS + B15C5] composites obtained retain properties of their components, namely superior mechanical strength (from CEL), excellent adsorption capability for heavy metal ions and organic pollutants (from B15C5 and CS). More importantly, the [CEL/CS + B15C5] composites exhibit truly supramolecular properties. By itself CS, CEL and B15C5 can effectively adsorb Cd2+, Zn2+ and 2,4,5-trichlorophenol. However, adsorption capability of the composite was substantially and synergistically enhanced by adding B15C5 to either CEL and/or CS. That is, the adsorption capacity (qe values) for Cd2+ and Zn2+ by [CS + B15C5], [CEL + B15C5] and [CEL + CS + B15C5] composites are much higher than combined qe values of individual CS, CEL and B15C5 composites. It seems that B15C5 synergistically interact with CS (or CEL) to form more stable complexes with Cd2+ (or Zn2+), and as a consequence, the [CS + B15C5] (or the [CEL + B15C5]) composite can adsorb relatively larger amount Cd2+ (or Zn2+). Moreover, the pollutants adsorbed on the composites can be quantitatively desorbed to enable the [CS + CEL + B15C5] composites to be reused with similar adsorption efficiency.

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“…Rochester and Strachan [25] reported the adsorption of benzo-15-crown-5 from water onto the carbon surfaces (a nonporous carbon and three porous carbons). Azizian and Yahyei [26] used the granular activated carbon for the removal of 18-crown-6 from aqueous solutions by adsorption.…”

Section: Introductionmentioning

confidence: 99%