Enhanced molar sorption ratio for naphthalene through the impregnation of surfactant into chitosan hydrogel beads

Chatterjee, Sudipta; Lee, Dae S.; Lee, Min Won; Woo, Seung Han

doi:10.1016/j.biortech.2010.01.062

Cited by 31 publications

(12 citation statements)

References 34 publications

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“…Since a large number of PFOS, especially the formed micelles, are adsorbed on the adsorbent surface and at the entrance of some pores, they may prevent the incoming PFOS from diffusing into the adsorbent. It was reported that the sorption of naphthalene was enhanced through the impregnation of surfactant into chitosan hydrogel beads, and both hydrophobic interaction and micelle formation of surfactant in chitosan beads were responsible for the sorption (Chatterjee et al, 2010). The formation of PFOS micelles not only resulted in the high sorption capacity, but also possibly facilitates the sorption of other hydrophobic pollutants on the chitosan beads.…”

Section: Kinetic Modeling and Sorption Mechanismmentioning

confidence: 97%

Removal of perfluorooctane sulfonate from aqueous solution by crosslinked chitosan beads: Sorption kinetics and uptake mechanism

Zhang

Deng

et al. 2011

Bioresource Technology

180

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Section: Kinetic Modeling and Sorption Mechanismmentioning

confidence: 97%

Removal of perfluorooctane sulfonate from aqueous solution by crosslinked chitosan beads: Sorption kinetics and uptake mechanism

Zhang

Deng

et al. 2011

Bioresource Technology

180

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“…The adsorption properties of surfactant-modified CS-Ac-An with FL were studied with the use of DTAB and DDAB under equilibrium conditions. In previous studies, different surfactants were used to study the improvement of the adsorption capacity of chitosan and its modified forms with various target pollutants [68][69][70][71]. Herein, two cationic surfactants (DTAB and DDAB) were selected to study the role of surface effects of cationic surfactant doping on the adsorption properties with the FL dianion.…”

Section: Equilibrium Adsorption Of Fl Using Surfactant Modified Cs-ac-anmentioning

confidence: 99%

Surface-Modified Chitosan: An Adsorption Study of a “Tweezer-Like” Biopolymer with Fluorescein

Vafakish

Wilson

2019

Surfaces

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Tweezer-like adsorbents with enhanced surface area were synthesized by grafting aniline onto the amine sites of a chitosan biopolymer scaffold. The chemical structure and textural properties of the adsorbents were characterized by thermogravimetric analysis (TGA) and spectral methods, including Fourier transform infrared (FT-IR), nuclear magnetic resonance (1H- and, 13C-NMR) and scanning electron microscopy (SEM). Equilibrium solvent swelling results for the adsorbent materials provided evidence of a more apolar biopolymer surface upon grafting. Equilibrium uptake studies with fluorescein at ambient pH in aqueous media reveal a high monolayer adsorption capacity (Qm) of 61.8 mg·g−1, according to the Langmuir isotherm model. The kinetic adsorption profiles are described by the pseudo-first order kinetic model. 1D NMR and 2D-NOESY NMR spectra were used to confirm the role of π-π interactions between the adsorbent and adsorbate. Surface modification of the adsorbent using monomeric and dimeric cationic surfactants with long hydrocarbon chains altered the hydrophile-lipophile balance (HLB) of the adsorbent surface, which resulted in attenuated uptake of fluorescein by the chitosan molecular tweezers. This research contributes to a first example of the uptake properties for a tweezer-like chitosan adsorbent and the key role of weak cooperative interactions in controlled adsorption of a model anionic dye.

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“…97 The potential of micellar solutions of surfactants/biosurfactants for elimination of VOCs is due to their ability to compartmentalize these toxins. 98 Estimation of the toxicity and environmental fate of surfactants is required for their in situ elimination applications. The use of cleaning surface-active products in the form of detergents and soaps has already caused a lot of damage to the aquatic environment.…”

Section: Chemical Reviewsmentioning

confidence: 99%

Micelles as Soil and Water Decontamination Agents

et al. 2016

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Contaminated soil and water pose a serious threat to human health and ecosystem. For the treatment of industrial effluents or minimizing their detrimental effects, preventive and remedial approaches must be adopted prior to the occurrence of any severe environmental, health, or safety hazard. Conventional treatment methods of wastewater are insufficient, complicated, and expensive. Therefore, a method that could use environmentally friendly surfactants for the simultaneous removal of both organic and inorganic contaminants from wastewater is deemed a smart approach. Surfactants containing potential donor ligands can coordinate with metal ions, and thus such compounds can be used for the removal of toxic metals and organometallic compounds from aqueous systems. Surfactants form host-guest complexes with the hydrophobic contaminants of water and soil by a mechanism involving the encapsulation of hydrophobes into the self-assembled aggregates (micelles) of surfactants. However, because undefined amounts of surfactants may be released into the aqueous systems, attention must be paid to their own environmental risks as well. Moreover, surfactant remediation methods must be carefully analyzed in the laboratory before field implementation. The use of biosurfactants is the best choice for the removal of water toxins as such surfactants are associated with the characteristics of biodegradability, versatility, recovery, and reuse. This Review is focused on the currently employed surfactant-based soil and wastewater treatment technologies owing to their critical role in the implementation of certain solutions for controlling pollution level, which is necessary to protect human health and ensure the quality standard of the aquatic environment.

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Enhanced molar sorption ratio for naphthalene through the impregnation of surfactant into chitosan hydrogel beads

Cited by 31 publications

References 34 publications

Removal of perfluorooctane sulfonate from aqueous solution by crosslinked chitosan beads: Sorption kinetics and uptake mechanism

Removal of perfluorooctane sulfonate from aqueous solution by crosslinked chitosan beads: Sorption kinetics and uptake mechanism

Surface-Modified Chitosan: An Adsorption Study of a “Tweezer-Like” Biopolymer with Fluorescein

Micelles as Soil and Water Decontamination Agents

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