Adsorption of indigo carmine on functional chitosan and β-cyclodextrin/chitosan beads: Equilibrium, kinetics and mechanism studies

Kekes, Tryfon; Tzia, Constantina

doi:10.1016/j.jenvman.2020.110372

Cited by 97 publications

(53 citation statements)

References 57 publications

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“…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]. This last characteristic is often neglected, with experiments being carried out on solutions that contain only one type of dye; however, Debnath et al [161] showed that most wastewater contains a mixture of different dyes, which affect the behavior of the adsorption system differently to a single dye system.…”

Section: Cyclodextrin Matrixmentioning

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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Section: Cyclodextrin Matrixmentioning

confidence: 99%

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

Bezerra

Arias²,

Firmino

et al. 2020

Molecules

View full text Add to dashboard Cite

show abstract

“…In the last few decades, due to the rapid industrialization and increasing of the world population, the ecosystems are seriously threatened due to the uncontrolled discharge of a large number of toxic organic or inorganic pollutants [1][2][3][4]. Among them, toxic metals, radionuclides as well as various organic pollutants, such as pesticides, pharmaceuticals, dyes, personal care products etc., can be listed [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…This has been and remains a promising biotechnology for the removal of pollutants from aqueous solutions due to its simplicity, efficiency and to the availability of biomass and residual biomass. The biosorptive capacities of different types of biomasses in relation to the removal of different types of pollutants have been reported in numerous scientific papers [4,7,[23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Biosorbents Based on Microbial Biomass and Natural Polymers: Synthesis, Characterization and Application for the Removal of Drugs and Dyes from Aqueous Solutions

et al. 2021

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Pharmaceuticals and dyes are a very important part of the nonbiodegradable or hard biodegradable substances present in wastewater. Microorganisms are already known to be effective biosorbents, but the use of free microbial cells involves difficulties in their separation from effluents and limits their application in wastewater treatment. Thus, this study aimed to develop biosorbents by immobilizing Saccharomyces cerevisiae, Saccharomyces pastorianus and Saccharomyces pastorianus residual biomass on natural polymers (alginate and chitosan) and to evaluate the biosorptive potential for removal of pharmaceuticals and dyes from water. Six types of biosorbents were synthesized and characterized by Scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy techniques and their biosorptive capacities for three drugs (cephalexin, rifampicin, ethacridine lactate) and two dyes (orange II and indigo carmine) were evaluated. The obtained results show that the removal efficiency depends on the polymer type used for the immobilization. In case of alginate the removal efficiency is between 40.05% and 96.41% for drugs and between 27.83% and 58.29% for dyes, while in the case of chitosan it is between 40.83% and 77.92% for drugs and between 17.17% and 44.77% for dyes. In general, the synthesized biosorbents proved to be promising for the removal of drugs and dyes from aqueous solutions.

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“…Currently, the treatment methods of dye wastewater include biodegradation, flocculation, ion-exchange, adsorption, membrane filtration and so on. [9][10][11][12][13][14] Among them, the flocculation method is widely used on account of its simplicity, high efficiency and reasonable price. [15][16][17] Flocculation is an effective process to remove dyes from wastewater by electrostatic neutralization, which results in the complexation of the dye and flocculant to form larger flocs.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Flocculation Property of Cationic Chitosan‐DADMAC‐β‐Cyclodextrin Copolymer

et al. 2021

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Dye wastewater, especially anionic dye wastewater, poses a serious risk to the environment and human health. To solve this problem, it is necessary to develop new flocculants with high efficiency and biodegradability. Herein, a copolymer of chitosan‐diallyl dimethyl ammonium chloride‐β‐cyclodextrin (CDC) with multiple functional groups is synthesized by microwave‐assisted copolymerization and used as flocculation to remove anionic dyes from wastewater. The experimental data show that the best removal ratios of the prepared CDC can reach 99.8% and 98.9% for acid black 172 and reactive orange C‐3R, respectively. In addition, the CDC can maintain good removal ability at different pH, temperature, and dye concentration. The excellent flocculation ability and wide application range endow the CDC flocculant with the potential application of anionic dye wastewater treatment.

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Adsorption of indigo carmine on functional chitosan and β-cyclodextrin/chitosan beads: Equilibrium, kinetics and mechanism studies

Cited by 97 publications

References 57 publications

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

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

Eco-Friendly Biosorbents Based on Microbial Biomass and Natural Polymers: Synthesis, Characterization and Application for the Removal of Drugs and Dyes from Aqueous Solutions

Preparation and Flocculation Property of Cationic Chitosan‐DADMAC‐β‐Cyclodextrin Copolymer

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