Thin film nanocomposite membrane incorporated with clay-ionic liquid framework for enhancing rejection of epigallocatechin gallate in aqueous media

Borah, Alimpia; Gogoi, Monti; Goswami, Rajiv; Sarmah, Hrishikesh; Hazarika, Krishna Kamal; Hazarika, Swapnali

doi:10.1016/j.jece.2022.107423

Cited by 17 publications

(9 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…12). 53 This membrane shows up to 94% rejection efficiency for epigallocatechin gallate. For the separation of another important biomolecule ‘resveratrol’ from plant extract, Hazarika et al designed a polymeric nanoporous membrane with glutaraldehyde crosslinked alpha, beta, and gamma-cyclodextrin, and a maximum rejection up to 98.02% was obatined.…”

Section: Application Of Cnm-based Membranesmentioning

confidence: 94%

“…It is a growing area of research to incorporate CNMs in membranes for biomolecule separation, which has not been explored much. Our previous studies have covered the separative extraction of tea polyphenols, 53 resveratrol, 145 lignocellulosic biomass, 146,147 natural dyes, 148 etc., via NF membranes. For tea polyphenol separation, thin film nanocomposite membranes have been fabricated with bentonite nanoclay and ionic liquid via the IP technique (shown in Fig.…”

Section: Wastewater Treatmentmentioning

confidence: 99%

“…The surface modification of CNMs with functional groups can make it possible to fabricate CNM-based TFNCMs. 52 IP, 53 crosslinking, 32 and vacuum coating have been endeavored by our group for preparing TFNCMs for wastewater treatment, 32 biomolecule separation, 53 chiral separation, 29 as well as gas separation. Our main objective is to develop an active and stable thin layer of CNMs over the membrane surface to nullify the risk of leaching due the action of various media in the feed.…”

Section: Thin Film Nanocomposite Membranementioning

confidence: 99%

“…IP between m -phenylene diamine and adipoyl chloride has been done by our group to achieve a TFNCM for biomolecule separation. 53 the coating of CD-GO on a superhydrophilic surface with glutaraldehyde as a cross linker is another recent approach. 32 This approach made it possible to homogeneously coat the GOs over the membrane surface.…”

Section: Thin Film Nanocomposite Membranementioning

confidence: 99%

Section: Application Of Cnm-based Membranesmentioning

confidence: 99%

See 4 more Smart Citations

Carbon nanomaterials for designing next-generation membranes and their emerging applications

Bora,

Bhuyan,

Borah

et al. 2023

Chem. Commun.

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Application Of Cnm-based Membranesmentioning

confidence: 94%

Section: Wastewater Treatmentmentioning

confidence: 99%

Section: Thin Film Nanocomposite Membranementioning

confidence: 99%

Section: Thin Film Nanocomposite Membranementioning

confidence: 99%

Section: Application Of Cnm-based Membranesmentioning

confidence: 99%

See 3 more Smart Citations

Carbon nanomaterials for designing next-generation membranes and their emerging applications

Bora,

Bhuyan,

Borah

et al. 2023

Chem. Commun.

Self Cite

View full text Add to dashboard Cite

show abstract

Novel ethylenediamine‐β‐cyclodextrin grafted membranes for the chiral separation of mandelic acid and its derivatives

Zhou,

Wei,

et al. 2024

Chirality

View full text Add to dashboard Cite

In the present study, flat cellulose acetate ultrafiltration membranes were prepared first by nonsolvent induced phase separation method. Then chiral membranes for separating the enantiomers were prepared by grafting the ultrafiltration membranes using ethylenediamine‐β‐cyclodextrin as the chiral selector and epichlorohydrin as the spacer arm. The pure water permeability of the ultrafiltration membrane was around 115 L·m−2·h−1·bar−1. The properties of the chiral membranes were characterized using infrared spectroscopy (ATR‐FTIR), X‐ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The chiral membrane performance in enantiomer separation was evaluated with racemates, such as mandelic acid (MA), 2‐chloromandelic acid (2‐ClMA), 4‐chloromandelic acid (4‐ClMA), and methyl mandelate (MM). The influence of feed concentration on the separation efficiency was also investigated. The results indicated that the enantiomeric excess percentages (e.e%) of the racemic mixtures for these four chiral compounds were up to 31.8%, 25.4%, 17.8%, and 32.6%, respectively. The binding free energy of the chiral selector with the (S)‐enantiomer calculated by molecular dynamics simulations was stronger than that with the (R)‐enantiomer, which was consistent with the experimental results (higher concentration of (R)‐enantiomer in the permeate). This supports the affinity absorption‐separation mechanism.

show abstract

Organic Exfoliation of Hydrophilic Bentonite using Aliquat 336 and Isobutyl(Trimethoxy)Silane to Enhance its Activity Toward pH-Dependent Adsorption of Epigallocatechin Gallate

Borah,

Gogoi

et al. 2023

Clays and clay miner.

View full text Add to dashboard Cite

The most potent and significant polyphenolic molecule from tea catechins is epigallocatechin gallate (EGCG); it has potential anti-cancer and anti-inflammatory properties. Methods are needed to mitigate its presence in the environment and protect humans from exposure. The objective of the present study was to investigate a functionalized, low-cost clay mineral as an adsorbent for the tea polyphenol EGCG. Hydrophilic bentonite (Bn) was functionalized using Aliquat 336 (A336) and isobutyl(trimethoxy)silane (IBTS). The degree of clay functionalization depended on the extent of introduction of alkyl linkages between the superimposed clay layers. Results revealed that Aliquat 336 functionalized clay (A336-Bn) exhibited maximum thermal stability at 500°C and it is a promising adsorbent for ECGC with a maximum adsorption capacity of 196.26 mg/g at equilibrium. Experimental data were analyzed using pseudo-first order and pseudo-second order models. Adsorption isotherms were interpreted from the Freundlich adsorption isotherm.

show abstract

Thin film nanocomposite membrane incorporated with clay-ionic liquid framework for enhancing rejection of epigallocatechin gallate in aqueous media

Cited by 17 publications

References 32 publications

Carbon nanomaterials for designing next-generation membranes and their emerging applications

Carbon nanomaterials for designing next-generation membranes and their emerging applications

Novel ethylenediamine‐β‐cyclodextrin grafted membranes for the chiral separation of mandelic acid and its derivatives

Organic Exfoliation of Hydrophilic Bentonite using Aliquat 336 and Isobutyl(Trimethoxy)Silane to Enhance its Activity Toward pH-Dependent Adsorption of Epigallocatechin Gallate

Contact Info

Product

Resources

About