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Bet surface area ppt3/15/2024 The main functional groups contributing to dye sorption were amine, carboxylic, and alcohol moieties. The biosorption capacities were not proportional to surface areas of the sorbents, but were instead influenced by their chemical element composition. Sensitivity analysis of the factors affecting biosorption examined by an artificial neural network model showed that pH was the most important parameter, explaining 22%, followed by nitrogen content of biosorbents (16%), initial dye concentration (15%) and carbon content of biosorbents (10%). Sorption capacities of the biosorbents were not correlated with the initial biosorption rates. Kinetic analysis based on both pseudo-second-order and Weber-Morris models indicated intraparticle diffusion was the rate limiting step for biosorption of Reactive Black 5 on to the biosorbents. The biosorption data for removal of Reactive Black 5 were readily modeled using the Langmuir adsorption isotherm. The performances of nine biosorbents derived from dead fungal biomass were investigated for their ability to remove Reactive Black 5 from aqueous solution.
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