Eco-friendly magnetic activated carbon modified with green tea extract for efficient adsorption of thiazine and azo dye contaminants from water
Muhammad Usama, Suhair A. Bani‐Atta, Muhammad Naveed Qasim, Afnan Qabil Alshammari, Abdullah K. Alanazi, Naseem Khan, Muhammad Mateen, Muhammad Nadeem Akhtar
Abstract
for MO at pH 3.0, with removal efficiency of 98.29% and 90.10%, respectively. Adsorption data showed stronger agreement with the Freundlich isotherm and pseudo-second-order kinetics, indicating multilayer chemisorption. The composite showed strong magnetic response enabling easy magnetic separation and successful recycling. The synergistic combination of maghemite and green tea extract polyphenols enhanced the surface reactivity and accessibility of active sites, suggesting that MAC-GTE may be a promising, and sustainable material for dyes removal applications.
Topics & Concepts
ChemistryAdsorptionFreundlich equationMaghemiteActivated carbonNuclear chemistryExtraction (chemistry)Central composite designThiazineGreen teaComposite numberChromatographyResponse surface methodologySpecific surface areaPolyphenolMagnetic nanoparticlesSurface modificationMagnetic separationReactivity (psychology)Water treatmentCarbon fibersGreen tea extractActivated charcoalInorganic chemistryAdsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterialsGeochemistry and Elemental Analysis