Cyclodextrins: A new efficient absorbent to treat waste gas streams

Blach, Philippe; Fourmentin, Sophie; Landy, David; Cazier, Fabrice; Surpateanu, Gheorghe

doi:10.1016/j.chemosphere.2007.07.018

Cited by 78 publications

(33 citation statements)

References 40 publications

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“…Theoretically, such techniques as pervaporation (Heymes et al, 2007), air stripping (Blach et al, 2008), solvent extraction (Volodin et al, 1997b), and heating distillation (Cen et al, 2007;Chen et al, 2009) can more or less recover toluene from the absorption solution used in the present study. Another aim in recovering toluene is to regenerate the absorption solution for reuse.…”

Section: Methodsmentioning

confidence: 94%

“…According to literature reports, aqueous solutions of Tween 81 and pentaethylene glycol monododecyl ether (Park et al, 2008), Span 20 (Park et al, 2008;Tian et al, 2010), β-cyclodextrin (β-CD; Blach et al, 2008), sodium citrate (Cen et al, 2007), sodium acetate (Chen et al, 2009), and some cationic surfactants (Jiang et al, 2010) present an obvious absorption to a hydrophobic VOC (e.g., toluene). Here are some data based on a dynamic absorption experiment.…”

Section: Introductionmentioning

confidence: 99%

“…Here are some data based on a dynamic absorption experiment. The toluene absorption capacity is about 0.51 mg/g for the aqueous solution of the β-CD at an inlet concentration of 500 mg/m 3 and a gas flow rate of 60 L/hr (Blach et al, 2008), about 0.093 mg/mL and 0.142 mg/mL for the aqueous solution of the cetyl trimethyl ammonium bromide and for its microemulsion formed with a cosurfactant, respectively, at an inlet concentration of 2000 mg/m 3 and a gas flow rate of 18 L/hr (Jiang et al, 2010), and 0.11 mg/mL for the aqueous solution of Tween 20 at the same conditions as the latter case . However, the absorption capacities of these surfactants are obviously lower as compared with solvent absorbents, although the experimental conditions are not totally similar.…”

Section: Introductionmentioning

confidence: 99%

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Absorption of gaseous toluene in aqueous solutions of some kinds of fluorocarbon surfactant

Xiao

Yan

et al. 2014

Journal of the Air & Waste Management Association

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A self-designed device was applied to treat a simulated exhaust gas loaded with toluene by aqueous solutions of five kinds of fluorocarbon surfactant (FS-3100, FS-22, FSN-100, FSO-100 and FSG) under the controlled laboratory conditions. The simulated exhaust gas is generated by a mixture of clean air and toluene vapor, and its toluene concentration can be controlled by changing the volume ratio of the inlet air to the vapor. Two mass transfer methods: liquid-liquid transfer and gas-liquid transfer, were compared for their toluene saturation capacities of these absorbent solutions, and it was found that more toluene was dissolved by the liquid-liquid transfer than by the gas-liquid transfer. According to the saturation capacities of these absorbent solutions and their Henry's Constants, FSO-100 is the best absorbent to treat the simulated exhaust gas and was selected for further experiments. The FSO-100 absorbent solution with a concentration of 0.1 % shows an efficient absorption to the simulated exhaust gas, with a toluene saturation capacity of 4.2 mg/g. Heating distillation (90-95 oC) is highly efficient to recover toluene from the FSO-100 absorbent solution as well as regenerate it. A toluene recovery of about 85 % was achieved. The regenerated absorption solution can keep its initial toluene absorption capacity during the reuse.Implications: There is a lack of information on fluorocarbon surfactants to be used for removing volatile organic compounds (VOCs) of industrial exhaust gases. This research investigated five kinds of fluorocarbon surfactant with different chemical structures as absorbents to treat a simulated exhaust gas loaded with toluene, and made a comparison between their toluene saturation capacities. The research revealed that FSO-100 (an ethoxylated nonionic fluorosurfactant) presents the best performance in trapping toluene, and heating distillation is feasible to recover toluene and regenerate the absorbent solution. The knowledge gained in this research provides a theoretical basis for selecting an appropriate fluorocarbon surfactant and preparing its aqueous solution to treat industrial exhaust gases loaded with toluene.

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Section: Methodsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Absorption of gaseous toluene in aqueous solutions of some kinds of fluorocarbon surfactant

Xiao

Yan

et al. 2014

Journal of the Air & Waste Management Association

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“…To develop functional nanowebs, Uyar et al have synthesized cyclodextrin functionalized polyethylene oxide (PEO) nanofibers (PEO/CD) [12]. Additionally, CDs are also used for filtration purposes [13][14][15]. Cyclodextrin-capped nanoparticles can apply in catalyst industry.…”

Section: Cyclodextrins (Cds)mentioning

confidence: 99%

From Zeolite to Host-Guest Nanocomposite Materials

Salavati‐Niasari¹,

Mohandes²

2011

Advances in Diverse Industrial Applications of Nanocomposites

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“…Owing to this intriguing supramolecular mould, CD can form non-covalent host-guest inclusion complexes (IC) with a variety of molecules so they are particularly applicable in various field such as pharmaceuticals, functional foods, cosmetics, home/personal care, textiles etc (Blach et al, 2008;Flaherty et al, 2013;Harada et al, 2011;Hedges, 1998;Shao et al, 2010;Szejtli, 1998). Some molecules that CD form IC can be hazardous and polluting chemicals, so CDs are fairly useful for filtration/separation/purification areas (Olah et al, 1988;Crini and Morcellet, 2002;Landy et al, 2012;Morin-Crini and Crini, 2013;Schofield et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Molecular entrapment of volatile organic compounds (VOCs) by electrospun cyclodextrin nanofibers

et al. 2016

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In this paper, we reported the molecular entrapment performance of hydroxypropyl-beta-cyclodextrin (HPβCD) and hydroxypropyl-gamma-cyclodextrin (HPγCD) electrospun nanofibers (NF) for two common volatile organic compounds (VOCs); aniline and benzene. The encapsulation efficiency of CD samples were investigated depending on the various factors such as; CD form (NF and powder), electrospinning solvent (DMF and water), CD (HPβCD and HPγCD) and VOCs (aniline and benzene) types. BET analysis indicated that, electrospun CD NF have higher surface area compared to their powder form. In addition DMA measurement provided information about the mechanical properties of CD NF. The encapsulation capability of CD NF and CD powder was investigated by 1H-NMR and HPLC techniques. The observed results suggested that, CD NF can entrap higher amount of VOCs from surroundings compared to their powder forms. Besides, molecular entrapment efficiency of CD NF also depends on CD, solvent and VOCs types. The inclusion complexation between CD and VOCs was determined by using TGA technique, from the higher decomposition temperature of VOCs. Finally, our results were fortified by the modeling studies which indicated the complexation efficiency variations between CD and VOC types. Here, the inclusion complexation ability of CD molecules was combined with very high surface area and versatile features of CD NF. So these findings revealed that, electrospun CD NF can serve as useful filtering material for air filtration purposes due to their molecular entrapment capability of VOCs. © 2015 Elsevier Ltd

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Cyclodextrins: A new efficient absorbent to treat waste gas streams

Cited by 78 publications

References 40 publications

Absorption of gaseous toluene in aqueous solutions of some kinds of fluorocarbon surfactant

Absorption of gaseous toluene in aqueous solutions of some kinds of fluorocarbon surfactant

From Zeolite to Host-Guest Nanocomposite Materials

Molecular entrapment of volatile organic compounds (VOCs) by electrospun cyclodextrin nanofibers

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