Publication: Removal of erythrosine B dye from wastewater using chitosan boric acid composite material: Experimental and density functional theory findings
Дата
2023
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© 2022 John Wiley and Sons Ltd.In this study, the chitosan boric acid (Ch-B) composite has been prepared and characterized with sophisticated analytical techniques such as FT-IR, SEM, and EDX. The prepared Ch-B adsorbent was applied for the adsorption of erythrosine B (EB) dye from water samples under the optimized parameters of pH, adsorbent dosage, time, and temperature. Results shows that the Ch-B adsorbent removes 96.5% of EB dye at pH 5, using 0.05 g of adsorbent. The adsorption equilibrium data have been subject to the Langmuir, Freundlich, and D-R adsorption equilibrium models, which demonstrates that the Freundlich model was the best fit with good correlation coefficient value (R2 = 0.991), while energy E (9.18 KJ·mol−1) calculated from D-R model suggested that the physical adsorption nature of the adsorption. Beside this, the thermodynamic and kinetic experiments were performed to check the feasibility and adsorption mechanism of EB-dye onto Ch-B adsorbent, which shows that the adsorption is endothermic (∆H = 0.124) and spontaneous in nature due to the negative values of Gibbs free energy (i.e., ∆G KJ·mol−1 = −13.01, −17.06, and −17.60). The kinetic models show that the adsorption equilibrium is best fitted with pseudo second order kinetic model due to good correlation coefficient (R2 = 0.99). Moreover, the interaction phenomenon between adsorbent and adsorbate was analyzed through DFT calculations.
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Removal of erythrosine B dye from wastewater using chitosan boric acid composite material: Experimental and density functional theory findings / Cetinkaya, H.F. [et al.] // Journal of Physical Organic Chemistry. - 2023. - 10.1002/poc.4400
URI
https://www.doi.org/10.1002/poc.4400
https://www.scopus.com/record/display.uri?eid=2-s2.0-85133065366&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000818901000001
https://openrepository.mephi.ru/handle/123456789/29843
https://www.scopus.com/record/display.uri?eid=2-s2.0-85133065366&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000818901000001
https://openrepository.mephi.ru/handle/123456789/29843