Chitosan hydrogels embedding hyper-crosslinked polymer particles as reusable broad-spectrum adsorbents for dye removal

Luna, Martina Salzano de; Castaldo, Rachele; Altobelli, Rosaria; Gioiella, Lucia; Filippone, Giovanni; Gentile, Gennaro; Ambrogi, Veronica

doi:10.1016/j.carbpol.2017.09.006

Cited by 95 publications

(35 citation statements)

References 30 publications

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“…The dye adsorption also became much more difficult due to the repulsive forces between the dye molecules on the solid and bulk phases. The adsorption capacity of sunset yellow FCF onto CTS‐CMC PECH was higher than that of CTS‐based hydrogels containing hyper‐crosslinked polymer particles (72 mg/g) …”

Section: Resultsmentioning

confidence: 89%

Preparation of chitosan and carboxymethylcellulose‐based polyelectrolyte complex hydrogel via SD‐A‐SGT method and its adsorption of anionic and cationic dye

Zhao

Xing

Qin

et al. 2020

J of Applied Polymer Sci

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The excellent properties of the polyelectrolyte complex hydrogels (PECHs) prepared with polysaccharides only, including polyampholyte, low toxicity, green, and clean production, have endowed them great application potentials as the adsorbents for dye‐containing wastewater treatments. In the current study, the PECH of chitosan (CTS) and carboxymethylcellulose (CMC) was prepared by semi‐dissolution acidification sol–gel transition (SD‐A‐SGT) method. The hydrogel was formed by the strong electrostatic interaction of cationic NH3+ groups of CTS and the anionic COO− groups of CMC. This simple but efficient means exhibited great potentials in constructing PECHs with uniform composition and controllable sol–gel transitions. Molecular dynamics simulation was first employed to predict the formation process and the microstructure of PECHs prepared by SD‐A‐SGT method. The structure and properties of the CTS‐CMC PECHs were also characterized by Fourier transform infrared spectroscopy, SS 13C‐NMR, scanning electron microscopy, mechanical tests, and rheological measurements, respectively. Taking the advantage of amphoteric polyelectrolyte properties, adsorption properties of anionic and cationic dyes were investigated using sunset yellow FCF and methylene blue as model dyes, respectively. The PECHs prepared in the present work had good adsorption capacity for both cationic and anionic dyes with maximum adsorption capacity of 212.83 mg/g for sunset yellow FCF and 167.35 mg/g for methylene blue. Therefore, this PECH would be a promising environmentally friendly adsorbent for the treatment of functional molecules with different charges.

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Section: Resultsmentioning

confidence: 89%

Preparation of chitosan and carboxymethylcellulose‐based polyelectrolyte complex hydrogel via SD‐A‐SGT method and its adsorption of anionic and cationic dye

Zhao

Xing

Qin

et al. 2020

J of Applied Polymer Sci

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“…The particles exhibited improved mechanical properties with possible use in batch or column procedures (de Luna et al 2017a). Batch biosorption experiments revealed a synergistic effect between chitosan and hydrogels, and the samples are able to remove both anionic and cationic dyes such as Indigo Carmine (q max = 118 mg/g), Rhodamine 6G (q max = 78 mg/g) and Sunset Yellow (q max = 72 mg/g) from water (de Luna et al 2017b). The maximum dye uptakes were higher than those of comparable biosorbents.…”

Section: A Recent Review Of the Literature On Dye Removal By Chitosanmentioning

confidence: 99%

Dye removal by biosorption using cross-linked chitosan-based hydrogels

et al. 2019

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Synthetic dyes are an important class of recalcitrant organic compounds that are often found in the environment as a result of their wide industrial use. There are estimated to be more than 100,000 commercially available dyes. These substances are common contaminants, and many of them are known to be toxic or carcinogenic. Colored effluents from the industry is perceived by the public as an indication of the presence of a dangerous pollution. Even at very low concentrations, dyes are highly visible-an esthetic pollution-and modify the aquatic life and food chain, as a chemical contamination. Dye contamination of water is a major problem worldwide, and the treatment of wastewaters before their discharge into the environment has become a priority. Dyes are difficult to treat due to their complex aromatic structure and synthetic origin. In general, a combination of different physical, chemical and biological processes is often used to obtain the targeted water quality. Nonetheless, there is a need to develop new removal strategies and decolorization methods that are more effective, acceptable for industrial use and ecofriendly. Currently, there is increasing interest in the application of biological materials as effective adsorbents for dye removal. Among all the materials proposed, cross-linked chitosan-based hydrogels are the most popular biosorbents. These polymeric matrices are the object of numerous fundamental studies. In this review, after a brief description of the use of chitosan in wastewater treatment and the basic principles of chitosan-based hydrogels and biosorption, we focus on some of the work published over the past 5 years. Overall, these polymeric materials have demonstrated outstanding removal capabilities for some dyes. They might be promising biosorbents for environmental purposes.

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“…In spectra of CrFP, the sharp peaks at1535 cm −1 and 1240 cm −1 belonged to CONH amide II and C N stretching of amide III, respectively [25], and the bands observed between 1466 and 1600 cm −1 were typical subtle structure of aminophenol, peak at 1081 cm −1 was attributed hydroxyl group of Cr(III) oxide [25,26]. For ACrFP, the wide peak around 3385-3428 cm −1 illustrated the appearance of amine groups [18], bands at 2946-2954 cm −1 were symmetric vibration of CH 2 , and the bands of 1647-1654 cm −1 were stretching vibration of COO, C O, C N (amide I) peptidic bond of proteins [25][26][27]. In addition, the new band at 1336 cm −1 representing C N stretching indicated the insertion of amine groups onto CrFP backbone, and new strong adsorption band in the region of 1040-1100 cm −1 corresponded to the COC group vibrations [28].…”

Section: Characterizationmentioning

confidence: 99%

Amine Resin by Chromium (III)‐Fibrous Protein for Enhanced Removal of Two Reactive Anionic Dyes

Deng

Wang

et al. 2018

Env Prog and Sustain Energy

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Amine resin (ACrFP) based on chromium (III)‐fibrous protein (CrFP) was synthesized by solvothermal reaction using tetraethylenepentamine, and its utilization in removing two kinds of anionic dyes (reactive brilliant red X‐3B and K‐2BP) was investigated. This adsorbent with protonated amine groups was characterized by SEM‐EDS, zeta potential, FTIR, Raman, and XPS. EDS analysis illustrated that the nitrogen content of ACrFP increased 6.40% compared with CrFP, suggesting grafting of amine groups into the framework of CrFP. Raman analysis of anionic dyes in solution and the ACrFP resin which has adsorbed dyes suggested that X‐3B and K‐2BP in solution have been loaded on solid, and XPS measurement of ACrFP, X‐3B‐ACrFP, and K‐2BP‐ACrFPfurther affirmed the results of Raman. Both sorption isotherms of X‐3B and K‐2BP were favored in lower temperature. About 0.1 mol/L of HCl could desorb reactive red dyes from ACrFP and the regenerated adsorbent could reuse several cycles. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S196–S204, 2019

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Chitosan hydrogels embedding hyper-crosslinked polymer particles as reusable broad-spectrum adsorbents for dye removal

Cited by 95 publications

References 30 publications

Preparation of chitosan and carboxymethylcellulose‐based polyelectrolyte complex hydrogel via SD‐A‐SGT method and its adsorption of anionic and cationic dye

Preparation of chitosan and carboxymethylcellulose‐based polyelectrolyte complex hydrogel via SD‐A‐SGT method and its adsorption of anionic and cationic dye

Dye removal by biosorption using cross-linked chitosan-based hydrogels

Amine Resin by Chromium (III)‐Fibrous Protein for Enhanced Removal of Two Reactive Anionic Dyes

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