Macroporous molecularly imprinted polymer/cryogel composite systems for the removal of endocrine disrupting trace contaminants

Noir, Mathieu Le; Plieva, Fatima M.; Hey, Tobias; Guieysse, Benoı̂t; Mattìasson, Bo

doi:10.1016/j.chroma.2007.03.064

Cited by 137 publications

(91 citation statements)

References 40 publications

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“…These results are similar to those found in a recent study on the removal of E2 from an aqueous solution (2 lg/L) using SPE with cryogel monolith columns, where 100 l 0.6% and 77 l 5.2% removal of E2 was achieved by E2-MIP/cryogel and E2-NIP/cryogel monolithic columns, respectively [17]. We have shown that the binding efficiency of the contaminants to the adsorption medium did not change with increased flow rates using MGPs as adsorption medium (this study) or SPE by cryogel monoliths [17]. Also, the flow properties of the MGPs (15 mL/min) allowed a flow rate three times higher than that used in SPE (5 mL/min) where columns were packed with only E2-MIP particles [17,22].…”

Section: Removal Of Edcs At Environmentally Relevant Levels From Spiksupporting

confidence: 90%

“…We have shown that the binding efficiency of the contaminants to the adsorption medium did not change with increased flow rates using MGPs as adsorption medium (this study) or SPE by cryogel monoliths [17]. Also, the flow properties of the MGPs (15 mL/min) allowed a flow rate three times higher than that used in SPE (5 mL/min) where columns were packed with only E2-MIP particles [17,22]. Furthermore, all MGPs could be used repeatedly (at least in ten sequential runs) with no loss of column efficiency, even when the medium was dried and re-swollen.…”

Section: Removal Of Edcs At Environmentally Relevant Levels From Spikmentioning

confidence: 60%

“…The macroporous cryogels designed as monolithic columns with pores of up to 100 lm in size and bearing different functionalities were shown as effective adsorption media in the bioseparation area especially with processing the particulate containing fluids [14,16]. Recently, the macroporous cryogels prepared in the form of monoliths containing embedded molecularly imprinted polymer (MIP) or non-MIP (NIP) particles were shown to be effective as adsorbents for the removal of E2 from water effluents [17]. High selectivity of MIP/cryogel compared to NIP/cryogel, as well as operation at high flow rates without losing efficiency was shown in ref.…”

Section: Introductionmentioning

confidence: 99%

“…These MIP particles were used for the preparation of selective adsorption medium consisting of poly(vinyl alcohol) (PVA) cryogels embedded with MIP (or NIP) particles and formed inside the plastic Kaldnes carriers (MIP(NIP)/MGPs). The PVA cryogels have been shown to have excellent flowthrough properties when prepared as monolithic columns [21] or when designed as a composite selective monolithic medium [17]. The prepared selective adsorption media (E2-MIP/MGPs, atrazine-MIP/MGPs and NP-MIP/MGPs) were evaluated on removal of the contaminants (E2, atrazine and NP, respectively) from water and compared to the respective nonselective media (NIP/ MGPs).…”

Section: Introductionmentioning

confidence: 99%

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Removal of endocrine‐disrupting compounds from water using macroporous molecularly imprinted cryogels in a moving‐bed reactor

Noir

Plieva²,

Mattìasson³

2009

J of Separation Science

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Original PaperRemoval of endocrine-disrupting compounds from water using macroporous molecularly imprinted cryogels in a moving-bed reactorHighly efficient removal of endocrine-disrupting compounds (EDCs) such as 17b-estradiol (E2), 4-nonylphenol (NP) and atrazine from water was achieved using a novel macroporous adsorption medium. The medium consisted of a macroporous poly(vinyl alcohol) (PVA) cryogel with molecularly imprinted polymer (MIP) particles embedded in it. The MIP was prepared using E2, NP and atrazine as templates. The macroporous composite molecularly imprinted cryogels were formed inside the open-ended protective shells, known as Kaldnes carriers. These adsorbents (defined as Macroporous Gel Particles, MGPs) were evaluated on the removal of E2, NP and atrazine from water using different column configurations, namely column filled with the MGPs (packed-bed column) and in moving-bed reactors (defined here as moving-bed MGPs reactor). Complete binding (A 99%) of E2 from a spiked aqueous solution (1 mg/L) was achieved using E2-MIP/MGPs in a moving-bed MGPs reactor at the retention time in the reactor of 4 min, while only 77% was bound to the nonimprinted medium (NIP/MGPs). Similar results were also obtained for the adsorption medium imprinted with atrazine. All contaminants studied (E2, atrazine and NP) were effectively removed from water at low (environmentally relevant) concentrations by the respective adsorption medium.

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Section: Removal Of Edcs At Environmentally Relevant Levels From Spiksupporting

confidence: 90%

Section: Removal Of Edcs At Environmentally Relevant Levels From Spikmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Removal of endocrine‐disrupting compounds from water using macroporous molecularly imprinted cryogels in a moving‐bed reactor

Noir

Plieva²,

Mattìasson³

2009

J of Separation Science

Self Cite

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“…However, MWCNT-NIP showed almost similar adsorption capacities for all the three analytes due to the lack of exact imprint cavities. NIPs can bind compounds only by non-specific adsorption (Noir et al 2007). These results suggested that depending on the interaction, size, shape and functionality of the template (Li et al 2009), the molecular imprinting process created a micro-environment in the polymer matrix.…”

Section: Selectivity Studiesmentioning

confidence: 99%

Highly selective nanocomposite sorbents for the specific recognition of S-ibuprofen from structurally related compounds

Sooraj

Mathew

2015

Appl Nanosci

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The aim of the present work was to synthesize highly homogeneous synthetic recognition units for the selective and specific separation of S-ibuprofen from its closely related structural analogues using molecular imprinting technology. The molecular imprinted polymer wrapped on functionalized multiwalled carbon nanotubes (MWCNT-MIP) was synthesized using S-ibuprofen as the template in the imprinting process. The characterization of the products and intermediates were done by FT-IR spectroscopy, PXRD, TGA, SEM and TEM techniques. The high regression coefficient value for Langmuir adsorption isotherm (R 2 = 0.999) showed the homogeneous imprint sites and surface adsorption nature of the prepared polymer sorbent. The nano-MIP followed a second-order kinetics (R 2 = 0.999) with a rapid adsorption rate which also suggested the formation of recognition sites on the surface of MWCNT-MIP. MWCNT-MIP showed 83.6 % higher rebinding capacity than its non-imprinted counterpart. The higher relative selectivity coefficient (k 0 ) of the imprinted sorbent towards S-ibuprofen than that for its structural analogues evidenced the capability of the nano-MIP to selectively and specifically rebind the template rather than its analogues.

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Design of Supermacroporous Biomaterials via Gelation at Subzero Temperatures—Cryogelation

Plieva

Kumar

Galaev

et al. 2009

Advanced Biomaterials

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Macroporous molecularly imprinted polymer/cryogel composite systems for the removal of endocrine disrupting trace contaminants

Cited by 137 publications

References 40 publications

Removal of endocrine‐disrupting compounds from water using macroporous molecularly imprinted cryogels in a moving‐bed reactor

Removal of endocrine‐disrupting compounds from water using macroporous molecularly imprinted cryogels in a moving‐bed reactor

Highly selective nanocomposite sorbents for the specific recognition of S-ibuprofen from structurally related compounds

Design of Supermacroporous Biomaterials via Gelation at Subzero Temperatures—Cryogelation

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