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Fabrication of chitosan coated bentonite clay multifunctional nanosorbents from waste biomass for the effective elimination of hazardous pollutants from waterbodies: A fixed bed biosorption, mechanism, and mathematical model study. | LitMetric

AI Article Synopsis

  • A novel bionanocomposite, chitosan-coated activated natural bentonite clay (CCANBC), was developed from waste biomass to effectively remove nickel (Ni) and Eosin Y from wastewater.
  • The bionanosorbents exhibited impressive properties, including high crystallinity and thermal stability, and demonstrated significant adsorption capabilities, achieving 186.42 mg/g for Ni and 238.37 mg/g for Eosin Y, while being thoroughly characterized using various analytical techniques.

Article Abstract

The anthropogenic activity and hasty fluctuating technologies have been responsible for the generation of massive effluent which is so hazardous due to the loading of several toxicants. While most industries usually discharge it directly into the environment resulting in harsh damage to the ecology/public security. Therefore, it is critical to treat with a sustainable/cost-effective technique. Here, a new route of fabrication of chitosan-coated activated natural bentonite clay (CCANBC) bionanocomposites/bionanosorbents from waste biomass has been developed. Their potential application for the simultaneous removal of Ni and Eosin Y from wastewater were investigated. The effective parameters like concentration (10-30 ppm), flow rate (2-4 mL/min), and bed height (0.5-1.5 cm) were inspected. The bionanosorbents were characterized by FTIR-ATR, XRD, FESEM, TGA, and BET analysis. Additionally, the effluents were explored by AAS and UV-vis-NIR spectroscopy. According to the findings it has been stated that the CCANBC bionanosorbents possessed significant dynamic edges, greater crystallinity (94.27 %), and higher thermal stability. They have exhibited a remarkable 2D honeycomb-like mesoporous microstructure with substantial specific surface area (19.29 m/g). These outstanding features could be responsible for the dramatic adsorption enactment around 186.42 and 238.37 mg/g for Ni and Eosin Y. The obtained data were evaluated by several mathematical models for better understanding the experimental BTC curve, reaction mechanism, and adsorption isotherm.

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Source
http://dx.doi.org/10.1016/j.ijbiomac.2024.137439DOI Listing

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