Selective adsorption of anionic dyes from aqueous solution by a novel β-cyclodextrin-based polymer

Jiang, Hongliu; Xu, Meng-Ya; Xie, Ze-Wu; Hai, Wei; Xie, Xiaolin; He, Fu‐An

doi:10.1016/j.molstruc.2019.127373

Cited by 45 publications

(20 citation statements)

References 63 publications

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“…Adsorption presents great effectiveness, ease of operation, and low cost. Adsorbent material can be reused, applied to various pollutants, and be used in water treatment in a broad range of dye concentrations [28][29][30]. However, some adsorbent materials can present a high cost, especially notable in emerging countries, such as activated carbon [31,32].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of Acid-Treated Brazilian Palygorskite for Cationic and Anionic Dyes Removal from the Water

et al. 2021

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The effect of acid treatment on the adsorptive capacity of a Brazilian palygorskite to remove the crystal violet (CV) and congo red (CR) dyes was investigated. The raw palygorskite was acid-treated by different HCl solutions (2, 4, and 6 mol/L). The modifications on the palygorskite structure were investigated using X-ray diffraction, X-ray fluorescence, Fourier-transform infrared spectroscopy, N2 adsorption/desorption, and thermogravimetric and differential thermal analysis. The efficiency of CV and CR adsorption was investigated, and the effect of the initial concentration, contact time, pH, and adsorbent amount was analyzed. The results revealed that CV adsorption in the acid-treated palygorskite was higher than that of the raw material. A Langmuir isotherm model was observed for the adsorption behavior of CV, while a Freundlich isotherm model was verified for the CR adsorption. A pseudo-second-order model was observed for the adsorption kinetics of both dyes. The higher CV adsorption capacity was observed at basic pH, higher than 97%, and the higher CR removal was observed at acidic pH, higher than 50%. The adsorption parameters of enthalpy (ΔH), entropy (ΔS), and Gibbs energy (ΔG) were evaluated. The adsorption process of the CV and CR dyes on the raw and acid-treated Brazilian palygorskite was predominantly endothermic and occurred spontaneously. The studied raw palygorskite has a mild-adsorption capacity to remove anionic dyes, while acid-treated samples effectively remove cationic dyes.

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Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of Acid-Treated Brazilian Palygorskite for Cationic and Anionic Dyes Removal from the Water

et al. 2021

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“…Crystal Violet [162] Reactive Black 5 [80] Methylene Blue [174] Methyl Orange [175] Safranin O, Brilliant Green and Methylene Blue [161] Methylene Blue and Safranine T [176] Methylene Blue, Acid Blue 113, Methyl Orange and Disperse Red 1 [177] Remazol Red 3BS, Remazol Blue RN, Remazol Yellow gelb 3RS 133 [178] Methyl Blue [169] β-cyclodextrin polymer Acid Blue 25, Reactive Blue 19, Disperse Blue 3, Basic Blue 3 and Direct Red 81 [81] Basic Blue 3, Basic Violet 3 and Basic Violet 10 [170] Direct Violent 51, Methyl Orange, And Tropaeolin 000 [179] Congo Red and Methylene Blue [41] Evans Blue, Chicago Sky Blue, Benzidine, Phloroaniline [180] Methylene Blue And Methyl Orange [42] Congo Red, Methylene Blue, Methylene Orange [156] Basic Orange 2, Rhodamine B, Methylene blue trihydrate, and Bisphenol A [40] Methyl orange, Congo Red, Rhodamine B [181] Direct Red 83:1 [171] 3.4.1. Cyclodextrin Matrix A material used for the adsorption of dyes present in effluents must have a high adsorption capacity, ease of regeneration, mechanical resistance, and ability to adsorb a variety of dyes [182].…”

Section: Methods Dye Referencementioning

confidence: 99%

“…Cyclodextrins, in addition to being used as additives for the dyeing process when seeking improvements in washing, color intensity, and leveling, and as a functionalization agent, can be used to remove dyes and auxiliaries present in industrial effluents [40,156]. In the wastewater from the dyeing process, the presence of several types of dyes, surfactants, and salts can be an issue [157].…”

Section: Cyclodextrins In Textile Effluent Treatmentmentioning

confidence: 99%

Cyclodextrin Chemistry and Toxicology

2022

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Section: Cyclodextrins In Textile Effluent Treatmentmentioning

confidence: 99%

The Role of β-Cyclodextrin in the Textile Industry—Review

Bezerra

Arias²,

Firmino

et al. 2020

Molecules

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β-Cyclodextrin (β-CD) is an oligosaccharide composed of seven units of D-(+)-glucopyranose joined by α-1,4 bonds, which is obtained from starch. Its singular trunk conical shape organization, with a well-defined cavity, provides an adequate environment for several types of molecules to be included. Complexation changes the properties of the guest molecules and can increase their stability and bioavailability, protecting against degradation, and reducing their volatility. Thanks to its versatility, biocompatibility, and biodegradability, β-CD is widespread in many research and industrial applications. In this review, we summarize the role of β-CD and its derivatives in the textile industry. First, we present some general physicochemical characteristics, followed by its application in the areas of dyeing, finishing, and wastewater treatment. The review covers the role of β-CD as an auxiliary agent in dyeing, and as a matrix for dye adsorption until chemical modifications are applied as a finishing agent. Finally, new perspectives about its use in textiles, such as in smart materials for microbial control, are presented.

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Selective adsorption of anionic dyes from aqueous solution by a novel β-cyclodextrin-based polymer

Cited by 45 publications

References 63 publications

Adsorption Behavior of Acid-Treated Brazilian Palygorskite for Cationic and Anionic Dyes Removal from the Water

Adsorption Behavior of Acid-Treated Brazilian Palygorskite for Cationic and Anionic Dyes Removal from the Water

Cyclodextrin Chemistry and Toxicology

The Role of β-Cyclodextrin in the Textile Industry—Review

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