Chitosan Grafted with Biobased 5-Hydroxymethyl-Furfural as Adsorbent for Copper and Cadmium Ions Removal

Mone, Mariza; Lambropoulou, Dimitra A.; Bikiaris, Dimitrios N.; Kyzas, George Z.

doi:10.3390/polym12051173

Cited by 28 publications

(14 citation statements)

References 65 publications

(81 reference statements)

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“…The grafted chitosan derivative was produced by grafting 5-hydroxymethyl-furfural (HMF) into chitosan. It must be noted that this adsorbent material was applied based on our previous work [ 43 ] in which we tested as series of CS-HMF materials for adsorption of copper and cadmium ions. However, in the latter study, the CS-HMF was synthesized with various molecular ratios (CS/HMF of 1:1 (CS-HMF1), 2:1 (CS-HMF2), and 10:1 mol/mol (CS-HMF3)).…”

Section: Introductionmentioning

confidence: 99%

Adsorption Evaluation for the Removal of Nickel, Mercury, and Barium Ions from Single-Component and Mixtures of Aqueous Solutions by Using an Optimized Biobased Chitosan Derivative

et al. 2021

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In this experimental study, the use of 5-hydroxymethyl-furfural (HMF) organic compound as a grafting agent to chitosan natural polymer (CS) was examined. One optimized chitosan derivative was synthesized, and then tested (CS-HMF), in order to uptake nickel, mercury, and barium metal ions from single- and triple-component (multi-component) aqueous solutions. The characterization of the material before and after the metal uptake was achieved by scanning electron microscopy (SEM). The ability of the adsorption of CS-HMF was tested at pH = 6. The adjusting of temperature from 25 to 65 °C caused the increase in the adsorption capacity. The equilibrium data were fitted to the models of Langmuir and Freundlich, while the data from kinetic experiments were fitted to pseudo-1st and pseudo-2nd order models. The best fitting was achieved for the Langmuir model (higher R2). The adsorption capacity for nickel, mercury, and barium removal at 25 °C (single component) was 147, 107, and 64 (mg/g), respectively. However, the total adsorption capacity for the multi-component was 204 mg/g. A thermodynamic study was also done, and the values of ΔG0, ΔH0, and ΔS0 were evaluated.

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Section: Introductionmentioning

confidence: 99%

Adsorption Evaluation for the Removal of Nickel, Mercury, and Barium Ions from Single-Component and Mixtures of Aqueous Solutions by Using an Optimized Biobased Chitosan Derivative

et al. 2021

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“…Adsorption is widely used in water and wastewater treatment [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ], which is one of the most effective technology [ 29 , 30 , 31 , 32 , 33 , 34 ]. Adsorption process between liquid and solid phase is strongly affected from temperature [ 35 ].…”

Section: Introductionmentioning

confidence: 99%

Barium/Cobalt@Polyethylene Glycol Nanocomposites for Dye Removal from Aqueous Solutions

Rahdar

Sattari

et al. 2021

Polymers

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Dyes are known as one of the most dangerous industrial pollutants which can cause skin diseases, allergy, and provoke cancer and mutation in humans. Therefore, one of the important environmental issues is the effective removal of dyes from industrial wastewater. In the current work, BaFe12O19/CoFe2O4@polyethylene glycol (abbreviated as BFO/CFO@PEG) nanocomposite was synthesized and evaluated regarding its capacity for adsorptive removal of a model dye Acid Blue 92 (denoted as AB92) from aqueous solutions. The characteristics of the prepared nanocomposite was determined by tests such as X-ray diffraction (XRD), scanning electron microscope (SEM), vibration sample magnetization (VSM), and Fourier transform infrared spectroscopy (FTIR). The effects of conditional parameters including pH (2–12), initial concentration of dye (20–100 mg/L), adsorbent dosage (0.02–0.1 g/L) and contact time (0-180 min) on the adsorption of dye were investigated and then optimized. The results indicated that with the increase of the adsorbent dosage from 0.02 to 0.1 g/L, the removal efficiency increased from 74.1% to 78.6%, and the adsorbed amount decreased from 148.25 to 31.44 mg/g. The maximum removal efficiency (77.54%) and adsorption capacity (31.02 mg/g) were observed at pH 2. Therefore, the general optimization conditions revealed that the maximum adsorption efficiency of dye was obtained in condition of initial concentration of 20 mg/L, contact time of 1 h and pH of solution equal 2. The adsorption isotherm and kinetic data were evaluated using a series of models. The pseudo-second order kinetic model and Freundlich isotherm model show the best fitting with experimental data with R2∼0.999.

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“…To enhance the e ciency of chitosan as an adsorbent, crosslinking reagents such as glyoxal, formaldehyde, glutaraldehyde, epichlorohydrin, ethylene glycon diglycidyl ether and isocyanate have been used (13) . Crosslinking agents not only stabilise chitosan in acid solutions in such a way that it becomes insoluble, but also improve its mechanical properties (14)(15)(16)(17) . The stability can also be achieved by chemical modi cations.…”

Section: Introductionmentioning

confidence: 99%

Graft Copolymerization Of Acrylic Acid Onto Fatty Chitosan: Synthesis, Characterization and Waste Water Treatment

Hamza

Elsawy

Alian

et al. 2021

Preprint

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Enviroment is worsening day by day due to industrial pollution, with hazardous chemicals contributing to the accumulation of heavy metal contaminants in waste water. Waste water polluted by these effluents disrupts the usual use of water for irrigation and marine life. The purity and efficiency of water is a paramount concern of mankind. These effluents must also be treated. Natural biopolymers are industrially desirable because of their ability to remove metal ions found in waste water. Among the many other low-cost absorbents listed, chitosan has the highest sorption potential for several metal ions (1) . In specific, we were trying to extract chitosan from shrimp, by N-deacetylation of chitin. The chemical structure of chitosan was characterised by the spectroscopy of Fourier Transform Infrared (FT-IR). The degree of N-deacetylation (DDA) was also calculated from FT-IR data. The use of biosorbent chitosan-fatty acid derivatives makes it possible to extract both heavy metals and organic compounds. In this analysis, the grafting copolymer of fatty chitosan derivatives with acrylic acid polymer was synthesised using ceric ammonium nitrate, the redox nitric acid method under UV irradiation. Synthesized copolymers have been subjected to various analytical techniques such as X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential thermogravimetric analysis (DTA) to confirm the formation of copolymers and to research their thermal stability. The findings show the formation and strong chemical interaction between fatty chitosan derivatives and acrylic acid. Fatty Chitosan derivatives and prepared grafting copolymers have been treated with copper and chromium-containing metal solutions and the results have shown that fatty chitosan derivatives and prepared copolymers are excellent in the removal of heavy metals such as copper and chromium. Prepared compounds could therefore open the way for industrial waste water treatment.

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Chitosan Grafted with Biobased 5-Hydroxymethyl-Furfural as Adsorbent for Copper and Cadmium Ions Removal

Cited by 28 publications

References 65 publications

Adsorption Evaluation for the Removal of Nickel, Mercury, and Barium Ions from Single-Component and Mixtures of Aqueous Solutions by Using an Optimized Biobased Chitosan Derivative

Adsorption Evaluation for the Removal of Nickel, Mercury, and Barium Ions from Single-Component and Mixtures of Aqueous Solutions by Using an Optimized Biobased Chitosan Derivative

Barium/Cobalt@Polyethylene Glycol Nanocomposites for Dye Removal from Aqueous Solutions

Graft Copolymerization Of Acrylic Acid Onto Fatty Chitosan: Synthesis, Characterization and Waste Water Treatment

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