Simultaneous Removal of Cationic and Anionic Dyes from Binary Solutions Using Carboxymethyl Chitosan Based IPN Type Resin

Emik, Serkan; Işık, Selin; Yıldırım, Eren

doi:10.1007/s10924-020-02016-y

Cited by 10 publications

(4 citation statements)

References 54 publications

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“…High concentration of Na + brought the ionization resistance to shield the active sites in -COO - groups. Moreover, a large amount of Na + in the solution caused the increase of the cationic density and produced an ion shielding effect to MB molecules [40]. Thus, the MB removal rate by P(AANa/AM) declined under 0.1 mol/L coexisting Na + solution.…”

Section: Resultsmentioning

confidence: 99%

Contribution Evaluation of Physical Hole Structure, Hydrogen Bond, and Electrostatic Attraction on Dye Adsorption through Individual Experiments

Wang

Zhang

et al. 2023

Adsorption Science & Technology

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Disagreements over various unanswered questions about contribution of the adsorption process and functional groups on dye adsorption still exist. The main aim of this research was to evaluate the contributions of physical hole structure, hydrogen bond, and electrostatic attraction on dye adsorption. Three ideal representatives, namely, a sponge with porous structure, P(AM) containing -CONH2 groups, and P(AANa/AM) containing -COONa groups, were chosen to evaluate the above contributions. The methylene blue (MB) removal rates of these three products were compared through individual experiments. The results revealed that physical hole structure did not play a role in decreasing dye concentration. Hydrogen bond existed in dye adsorption but did not remarkably reduce dye concentration. The excellent removal results of P(AANa/AM) demonstrated that electrostatic attraction was critical in enriching dye contaminants from the solution into solid adsorbent. The results could provide insights into the dye adsorption mechanisms for further research.

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Section: Resultsmentioning

confidence: 99%

Contribution Evaluation of Physical Hole Structure, Hydrogen Bond, and Electrostatic Attraction on Dye Adsorption through Individual Experiments

Wang

Zhang

et al. 2023

Adsorption Science & Technology

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“…Furthermore, the value of the Langmuir isotherm constant (𝐾 𝐿 ) was higher for CoFe2O4/GO-ADH-CMC than for CoFe2O4/GO, specifying the increase in the affinity for CUR by providing new bonds on the surface of the CoFe2O4/GO-ADH-CMC. The 1 𝑛 ⁄ parameters obtained by the Freundlich isotherm were smaller than one at all temperatures, representing the favorability of the CUR adsorption process [53]. With increasing the adsorption temperature in the range of 298 to 323 K, the values of 𝐴 𝑇 constant, corresponding to the equilibrium binding energy, for the Temkin model increased from 61.44 to 202.66 L mg −1 , indicating the endothermic essence of the adsorption process of CUR onto CoFe2O4/GO-ADH-CMC [53].…”

Section: Adsorption Kinetics and Isothermsmentioning

confidence: 87%

“…The 1 𝑛 ⁄ parameters obtained by the Freundlich isotherm were smaller than one at all temperatures, representing the favorability of the CUR adsorption process [53]. With increasing the adsorption temperature in the range of 298 to 323 K, the values of 𝐴 𝑇 constant, corresponding to the equilibrium binding energy, for the Temkin model increased from 61.44 to 202.66 L mg −1 , indicating the endothermic essence of the adsorption process of CUR onto CoFe2O4/GO-ADH-CMC [53].…”

Section: Adsorption Kinetics and Isothermsmentioning

confidence: 87%

Fabrication of a pH-responsive magnetic nanocarrier based on carboxymethyl cellulose-aminated graphene oxide for loading and in-vitro release of curcumin

Danesh

Miralinaghi

Sadjady

2022

Preprint

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In this study, a pH-responsive magnetic drug delivery system was prepared by cross-linking of Cofe2O4/graphene oxide to carboxymethyl cellulose (CMC) biopolymer with adipic acid dihydrazide (ADH) and then investigated for loading and release of a poorly water-soluble anti-cancer drug, curcumin (CUR). The CoFe2O4/GO-ADH-CMC bio-nanocomposite was characterized by FE–SEM/EDX, TEM, FT–IR, XRD, TGA, VSM, and zeta-potential techniques. The highest amount of drug loading was achieved as 23.7 mg g–1 at 323 K, pH 6.0, and 120 mg L–1 CUR concentration. The study of adsorption isotherms revealed that the Sips model was best fitted to the equilibrium data (R2 > 0.997), which indicated the contribution of both chemisorption and physisorption in drug loading. Furthermore, the release profile of CUR from drug-loaded CoFe2O4/GO-ADH-CMC was studied in mimicking the endosomal (pH = 5.6) and physiological (pH = 7.4) conditions. After 24 h, the maximum cumulative releases were found to be 86 and 38% at pH = 5.6 and 7.4, respectively. Also, the Peppas-Sahlin kinetic model was followed for the release data. The MTT assay exhibited good biocompatibility of the CoFe2O4/GO-ADH-CMC. The results implied that CoFe2O4/GO-ADH-CMC magnetic bio-nanocomposite might be utilized as a potentially safe carrier with the continuous and slow release of CUR.

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“…Many semi-IPN/IPN composite hydrogels having at least one polysaccharide in their composition have also been evaluated for their performance in the removal of cationic [ 86 , 87 , 88 , 89 , 90 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 ] and anionic [ 91 , 92 , 97 , 103 , 104 , 105 ] dyes in single- or multi-component [ 93 ] solutions. Since most dyes contain ionic functional groups in their structure, the sorption mechanism is mainly driven by the electrostatic interactions between them and the functional groups of the sorbents, with hydrogen bonds also having a contribution [ 98 , 100 ].…”

Section: Polysaccharide-based Composite Hydrogels Applied In Wastewat...mentioning

confidence: 99%

Polysaccharide-Based Composite Hydrogels as Sustainable Materials for Removal of Pollutants from Wastewater

Ghiorghiță¹,

Dinu²,

Lazăr³

et al. 2022

Molecules

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Nowadays, pollution has become the main bottleneck towards sustainable technological development due to its detrimental implications in human and ecosystem health. Removal of pollutants from the surrounding environment is a hot research area worldwide; diverse technologies and materials are being continuously developed. To this end, bio-based composite hydrogels as sorbents have received extensive attention in recent years because of advantages such as high adsorptive capacity, controllable mechanical properties, cost effectiveness, and potential for upscaling in continuous flow installations. In this review, we aim to provide an up-to-date analysis of the literature on recent accomplishments in the design of polysaccharide-based composite hydrogels for removal of heavy metal ions, dyes, and oxyanions from wastewater. The correlation between the constituent polysaccharides (chitosan, cellulose, alginate, starch, pectin, pullulan, xanthan, salecan, etc.), engineered composition (presence of other organic and/or inorganic components), and sorption conditions on the removal performance of addressed pollutants will be carefully scrutinized. Particular attention will be paid to the sustainability aspects in the selected studies, particularly to composite selectivity and reusability, as well as to their use in fixed-bed columns and real wastewater applications.

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Simultaneous Removal of Cationic and Anionic Dyes from Binary Solutions Using Carboxymethyl Chitosan Based IPN Type Resin

Cited by 10 publications

References 54 publications

Contribution Evaluation of Physical Hole Structure, Hydrogen Bond, and Electrostatic Attraction on Dye Adsorption through Individual Experiments

Contribution Evaluation of Physical Hole Structure, Hydrogen Bond, and Electrostatic Attraction on Dye Adsorption through Individual Experiments

Fabrication of a pH-responsive magnetic nanocarrier based on carboxymethyl cellulose-aminated graphene oxide for loading and in-vitro release of curcumin

Polysaccharide-Based Composite Hydrogels as Sustainable Materials for Removal of Pollutants from Wastewater

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