Development of a Reusable Functional Polymer for the Removal of Brilliant Blue Dye from Beverages: Synthesis, Characterization, and Analytical Applications

Project no. 33143 · Status: Kapanmış · 2025

Summary

<p>In&nbsp;this&nbsp;study,&nbsp;a&nbsp;novel&nbsp;functional&nbsp;polymeric&nbsp;adsorbent&nbsp;composed&nbsp;of&nbsp;N-cyclohexylacrylamide&nbsp;(NCA),&nbsp;4-vinylpyridine&nbsp;(4VP),&nbsp;and&nbsp;divinylbenzene&nbsp;(DVB)&nbsp;monomers&nbsp;was&nbsp;synthesized&nbsp;for&nbsp;the&nbsp;efficient&nbsp;removal&nbsp;of&nbsp;Brilliant&nbsp;Blue&nbsp;(E133)&nbsp;dye&nbsp;from&nbsp;aqueous&nbsp;media&nbsp;and&nbsp;real&nbsp;beverage&nbsp;samples.&nbsp;The&nbsp;structural&nbsp;and&nbsp;surface&nbsp;properties&nbsp;of&nbsp;the&nbsp;obtained&nbsp;NCA-4VP-DVB&nbsp;copolymer&nbsp;were&nbsp;comprehensively&nbsp;characterized&nbsp;using&nbsp;FTIR,&nbsp;SEM-EDS,&nbsp;TGA,&nbsp;and&nbsp;BET&nbsp;analyses.&nbsp;The&nbsp;adsorption&nbsp;behavior&nbsp;was&nbsp;systematically&nbsp;investigated&nbsp;as&nbsp;a&nbsp;function&nbsp;of&nbsp;pH,&nbsp;adsorbent&nbsp;dosage,&nbsp;contact&nbsp;time,&nbsp;and&nbsp;temperature.&nbsp;Under&nbsp;optimum&nbsp;conditions&nbsp;(pH&nbsp;2.0,&nbsp;10&nbsp;mg&nbsp;adsorbent,&nbsp;and&nbsp;30–60&nbsp;min&nbsp;contact&nbsp;time),&nbsp;the&nbsp;system&nbsp;reached&nbsp;equilibrium&nbsp;rapidly&nbsp;and&nbsp;achieved&nbsp;high&nbsp;removal&nbsp;efficiency.&nbsp;The&nbsp;kinetic&nbsp;data&nbsp;showed&nbsp;an&nbsp;excellent&nbsp;fit&nbsp;to&nbsp;the&nbsp;pseudo-second-order&nbsp;kinetic&nbsp;model&nbsp;(R²&nbsp;=&nbsp;1.000),&nbsp;while&nbsp;the&nbsp;isotherm&nbsp;data&nbsp;were&nbsp;best&nbsp;described&nbsp;by&nbsp;the&nbsp;Langmuir&nbsp;model&nbsp;(R²&nbsp;=&nbsp;0.9852).&nbsp;The&nbsp;maximum&nbsp;adsorption&nbsp;capacity&nbsp;was&nbsp;calculated&nbsp;as&nbsp;769.23&nbsp;mg&nbsp;g⁻¹.&nbsp;Thermodynamic&nbsp;parameters&nbsp;revealed&nbsp;that&nbsp;the&nbsp;adsorption&nbsp;process&nbsp;was&nbsp;spontaneous&nbsp;and&nbsp;exothermic.The&nbsp;high&nbsp;removal&nbsp;efficiencies&nbsp;obtained&nbsp;for&nbsp;real&nbsp;beverage&nbsp;samples,&nbsp;ranging&nbsp;from&nbsp;95%&nbsp;to&nbsp;99%,&nbsp;demonstrated&nbsp;that&nbsp;the&nbsp;adsorbent&nbsp;maintained&nbsp;its&nbsp;effectiveness&nbsp;even&nbsp;in&nbsp;complex&nbsp;matrices.&nbsp;Overall,&nbsp;the&nbsp;results&nbsp;indicate&nbsp;that&nbsp;the&nbsp;developed&nbsp;polymer&nbsp;offers&nbsp;a&nbsp;high-performance,&nbsp;rapid,&nbsp;and&nbsp;practically&nbsp;applicable&nbsp;adsorption&nbsp;system&nbsp;for&nbsp;the&nbsp;removal&nbsp;of&nbsp;Brilliant&nbsp;Blue&nbsp;dye&nbsp;from&nbsp;beverage&nbsp;samples.</p><p></p><p></p><p></p><p></p>

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