Sorption of aromatic compounds in water using insoluble cyclodextrin polymers

Crini, Grégorio; Bertini, Sabrina; Torri, Giangiacomo; Naggi, Annamaria; Sforzini, D.; Vecchi, C.; Janus, Ludovic; Lekchiri, Yahya; Morcellet, Michel

doi:10.1002/(sici)1097-4628(19980620)68:12<1973::aid-app11>3.0.co;2-t

Cited by 141 publications

(87 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several materials with different b-CD contents (ranging from 20 to 80% w/w) and hydroxypropyl-b-cyclodextrin (HP-b-CD) were prepared by Crini and Morcellet [18,23,184] et al using the procedure described by Solms and Egli, and improved by Komiyama et al They introduced some minor modifications consisting in an increase of the amount of cross-linking agent in order to obtain mechanically stable polymers. They proposed the use of these polymers as a heterogeneous system to sorb dyes.…”

Section: Gelsmentioning

confidence: 99%

“…The utility of these materials was recognized for many applications: they were used for synthetic purposes [167,168] (catalysis...), in thermochemistry [181], food [120,171,175], and pharmaceutical [161] industries, and in other fields such as the clean-up of industrial waste effluents [18,185,186] and in chromatography (separation of molecules...) [145,148,160]. More specifically, polymerized CD gels are preferentially used as stationary phases in column chromatography for gel inclusion chromatography with some degree of success.…”

Section: Cyclodextrin Polymers and Copolymersmentioning

confidence: 99%

“…In particular substituted phenols [1,2,6,11,26] and benzene derivatives [7,12,18,19,28] have been the subject of much interest because of increasingly stringent restrictions on the organic content of industrial effluents. These toxic molecules which are the products of many industrial processes (e. g. in agriculture, forestry, manufacturing industry, and hospitals) are common water pollutants.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and applications of adsorbents containing cyclodextrins

Crini¹,

2002

View full text Add to dashboard Cite

Synthesis and applications of adsorbents containing cyclodextrinsCyclodextrins (CDs), which possess a hydrophobic cavity, have a remarkable capacity to form inclusion complexes with various molecules through host-guest interactions. It is well known that the usefulness of CDs is due to the combination of the inclusion properties and structural features of these molecules. CDs are used extensively in separation science because CD-complexation phenomena offer a procedure of choice for separation of compounds and extraction processes, and provide a useful and versatile tool for protecting the environment. The present review shows the advantages accruing from the use of adsorbents containing cyclodextrins, in particular in chromatographic separations and in waste water treatment. The main goal of this review is to provide a summary of the information concerning the synthesis of materials containing CDs and to give a general overview of the different possible applications of CDs as sorbents in the field of separation techniques. Recent and continuing interest in these adsorbents is evident from the number of papers that appear each year in the literature.

show abstract

Section: Gelsmentioning

confidence: 99%

Section: Cyclodextrin Polymers and Copolymersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and applications of adsorbents containing cyclodextrins

Crini¹,

2002

View full text Add to dashboard Cite

show abstract

“…As a consequence, cyclodextrin polymers can be effectively used to retain phenol (Romo et al, 2007). In spite of having good sorptive properties, the application of cyclodextrins for removing pollutants is still recent (Molnar et al 2005;Garon et al 2004;Szente et al 1999;Wang et al 1998;Crini et al 1998). Nevertheless, their use as a bacterial support requires that the CDs should be incorporated into insoluble polymeric matrices to avoid being carried away by water.…”

Section: Introductionmentioning

confidence: 99%

Feasibility study of degradation of phenol in a fluidized bed bioreactor with a cyclodextrin polymer as biofilm carrier

2007

View full text Add to dashboard Cite

This work is focused on the evaluation of a beta-cyclodextrin polymer as a carrier medium in a fluidized bed bioreactor treating aqueous phenol as a model pollutant. The insoluble polymer support was obtained in the shape of spherical beads by crosslinking beta-cyclodextrin with epichlorohydrin. A batch of swollen polymer particles was loaded into the reactor and inoculated with a mixed bacterial culture. Bacterial growth on the polymer beads was initially stimulated by glucose addition to the medium, and then gradually replaced with phenol. The operational variables studied after the acclimation period included phenol load, hydraulic residence time and recirculation flow rate. Low hydraulic residence times and moderate phenol loads were applied. The elimination capacity was usually about 1.0 kg-phenol/m(3)d, although a maximum of 2.8 kg-phenol/m(3)d was achieved with a retention time of only 0.55 h. The depuration efficiency was not affected by the recirculation flow rate in the range studied. Neither operational nor support stability problems were detected during the operation. A high degree of expansion was achieved in the bioreactor due to the hydrogel nature of the cyclodextrin polymer and, consequently, a low energy requirement was necessary to fluidize the bed.

show abstract

“…As has been reported, b-CD polymers can effectively adsorb organic molecules and heavy metals in water [8][9][10][11][12][13][14][15][16][17][18][19][20]. b-CD polymers modified by carboxyl/carboxylate groups (-COOH/-COO -) have been found to be more efficient in adsorption toward some heavy metals, basic dyes and aromatic amines [21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

A novel β-cyclodextrin polymer modified by sulfonate groups

Zhao

Zhu

et al. 2011

J Incl Phenom Macrocycl Chem

View full text Add to dashboard Cite

Based on the special properties and advantages of b-cyclodextrin (b-CD), b-CD polymers have been widely studied and used in recent years. A lot of researches have focused on the adsorption and separation properties of b-CD polymers. In this paper, b-CD polymer modified by sulfonate groups, which was named S-b-CDP, was prepared using epichlorohydrin as crosslinker and tiron (1,2-dihydroxybenzene-3,5-disulfonic acid disodium salt) as modifier. b-CD polymer without modification, which was named b-CDP, was also prepared for comparison. Infrared spectra, elemental analysis and adsorption tests of S-b-CDP were carried out and compared with b-CDP. The content of sulfonate groups in S-b-CDP was obtained from elemental analysis. The dramatically increased adsorption capability toward methylene blue and basic magenta confirmed the existence and chemical activity of sulfonate groups in S-b-CDP. Due to the convenient preparation process and modified adsorption properties, S-b-CDP will find its applications in various fields such as water purification, drug loading, separation and analysis.

show abstract

Sorption of aromatic compounds in water using insoluble cyclodextrin polymers

Cited by 141 publications

References 0 publications

Synthesis and applications of adsorbents containing cyclodextrins

Synthesis and applications of adsorbents containing cyclodextrins

Feasibility study of degradation of phenol in a fluidized bed bioreactor with a cyclodextrin polymer as biofilm carrier

A novel β-cyclodextrin polymer modified by sulfonate groups

Contact Info

Product

Resources

About