Remediation technologies using cyclodextrins: an overview

Landy, David; Mallard, Isabelle; Ponchel, A.; Monflier, Éric; Fourmentin, Sophie

doi:10.1007/s10311-011-0351-1

Cited by 121 publications

(71 citation statements)

References 126 publications

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“…The possibility of adsorption in inclusion spaces is predicated on the fact that the volumes guest molecules (adsorbates) were within the range that can be hosted by ␥-cyclodextrin. For instance, the volume of DEP (232.46Å 3 ), as calculated using Density Functional Theorem (Spartan 10v1.1 suite of programmes) is close to that of Benzo[a]anthracene (256.06 Å 3 ) which has been reported to be in the size range for ␥-cyclodextrin inclusion (Landy, Mallard, Ponchel, Monflier, & Fourmentin, 2012). However, due to the fact that GPP has more inclusion spaces than GSP, the contribution of adsorption on inclusion spaces to the entire adsorption was more in GPP than in GSP, hence GPP exhibited higher adsorption capacity than GSP, while SPP had the least.…”

Section: Effect Of Temperature and Thermodynamics Analysismentioning

confidence: 99%

Mechanism of dialkyl phthalates removal from aqueous solution using γ-cyclodextrin and starch based polyurethane polymer adsorbents

Okoli

Adewuyi

Zhang

et al. 2014

Carbohydrate Polymers

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a b s t r a c tPhthalate esters have been known as potent endocrine disruptors and carcinogens; and their removal from water have been of considerable concern recently. In the present study, ␥-cyclodextrin polyurethane polymer (GPP), ␥-cyclodextrin/starch polyurethane copolymer (GSP), and starch polyurethane polymer (SPP) have been synthesized and characterized. Their adsorption efficiencies for the removal of dimethyl phthalate (DMP) and diethyl phthalate (DEP) from aqueous solutions were investigated. The characterization results showed the success of the synthesis. The isotherms were L-type, and both the Langmuir and Freundlich adsorption isotherm gave good fittings to the adsorption data. Adsorption mechanisms suggested that these adsorbents spontaneously adsorb phthalate molecules driven mainly by enthalpy change, and the adsorption process was attributed to multiple adsorbent-adsorbate interactions such as hydrogen bonding, -stacking, and pore filling. The results showed that starch and ␥-cyclodextrin polyurethane polymer adsorbents have excellent potential as adsorbent materials for the removal of phthalates from the contaminated water.

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Section: Effect Of Temperature and Thermodynamics Analysismentioning

confidence: 99%

Mechanism of dialkyl phthalates removal from aqueous solution using γ-cyclodextrin and starch based polyurethane polymer adsorbents

Okoli

Adewuyi

Zhang

et al. 2014

Carbohydrate Polymers

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“…Due to their relatively hydrophobic cavity, CD are capable of forming inclusion complexes (IC) with variety of organic molecules and thus, CD can be effective for the removal of hazardous molecules from the surroundings by inclusion complexation (Crini and Morcellet, 2002;Olah et al, 1988;Landy et al, 2012;MorinCrini and Crini, 2013;Schofield et al, 2012). In our previous studies, we have demonstrated that CD functionalized polymeric NF can be potentially used as molecular filters for the air and water filtration by removing organic molecules from the required environment (Kayaci et al, 2013;Kayaci and Uyar, 2014;Uyar et al, 2009Uyar et al, , 2010aUyar et al, , 2010b.…”

Section: Vocs Entrapment Capability Of CD Nf and Cd Powdermentioning

confidence: 99%

“…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). For this purpose, it can be considered that, CD have also potential for the elimination of VOCs from the environment (Favier et al, 2011;Mauri-Aucejo 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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“…CDs have a hydrophilic outer surface and a hollow hydrophobic interior [17], facilitating inclusion complex formation of lipophilic molecule (guests) of appropriate dimensions. CDs inclusion complexes have found numerous applications in remediation [18,19], medicine [20], or food [21,22]. Some authors already investigated the effect of CD modification in the sorption capacities of zeolite.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and sorption capacities toward organic pollutants of new β-cyclodextrin modified zeolite derivatives

Mallard

Städe

Ruellan

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Remediation technologies using cyclodextrins: an overview

Cited by 121 publications

References 126 publications

Mechanism of dialkyl phthalates removal from aqueous solution using γ-cyclodextrin and starch based polyurethane polymer adsorbents

Mechanism of dialkyl phthalates removal from aqueous solution using γ-cyclodextrin and starch based polyurethane polymer adsorbents

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

Synthesis, characterization and sorption capacities toward organic pollutants of new β-cyclodextrin modified zeolite derivatives

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