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- W4313450336 abstract "The triphenyl group (trityl radical) possessing three-phenyl rings, self-assembled through aromatic π–π stacking interactions, can form interesting crystalline organic nano-flowers. In this work, we have synthesized a hybrid material of 1,2-bis(tritylthio)ethane and magnetite, which reduces toxic Cr(VI) to non-toxic Cr(III). We validated the efficacy of the hybrid in reducing toxic Cr(VI) along with three other adsorbent systems. Among the five adsorbent systems tested, we observed that human hair has higher Cr removal efficiency, which prompted us to explore further using different mechanical forms of human hair. Pulverized hair (PH), hair powder (HP), and raw hair (RH) were evaluated by employing different reaction factors such as the adsorbent dose, pH, initial Cr(VI) concentration, and contact time. The comparative evaluation showed that PH has greater adsorption capacity (15.14 mg/g), followed by RH (13.27 mg/g) and HP (10.5 mg/g). While investigating the adsorption mechanism, we observed that it follows pseudo-second-order kinetics suggesting chemisorption. The Freundlich isotherm model fitted well for Cr(VI) adsorption by human hair, suggesting a multi-layered adsorption process. Overall, this study promises a cost-effective and eco-friendly bio-adsorbent for Cr(VI), which may be scaled up to design automated industrial waste disposal systems." @default.
- W4313450336 created "2023-01-06" @default.
- W4313450336 creator A5039850431 @default.
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- W4313450336 date "2022-12-20" @default.
- W4313450336 modified "2023-10-18" @default.
- W4313450336 title "Efficient Biosorption of Hexavalent Chromium from Water with Human Hair" @default.
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- W4313450336 doi "https://doi.org/10.1021/acsomega.2c06268" @default.
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