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- W2371796798 abstract "The paper is aimed at offering our analysis results on the characteristic features of cadmium biosorption onto Myriophyllum spicatum in hoping to utilize the submerged aquatic plants as a cheap and clean technique for remedying heavy metal contaminated water plants. It is for this purpose that we have studied the effects of contact time, pHvalue, initial concentration of the heavy metal contaminants, and the calcium ions on the biosorption of cadmium via the Myriophyllum spicatum. The kinetic study shows that the cadmium biosorption rate of M. spicatum goes fast and that equilibrium can be reached in 20 min.The overall absorption rate can be properly shown through a pseudo-second order model with a coefficient of determination of 0.999 6. The amount of the adsorbed cadmiumworked out by using the pseudo-second ordermodel proves to be consistentwithwhat we have obtained with experimentswith deviations less than 4.89%. In addition, the pHwas found to elicit a significant effecton the cadmium biosorption of M. spicatum. If the initial cadmium concentration was setup at36 mg/L, the specific adsorption capacitywould be equal to 17.73 mg/g at pH5.0. Comparedwith the Freundlichmodel, it turns out that the Langmuir model tends to be better fit for the biosorption of cadmium by M. spicatum, indicating that there exists a strong positive evidence that the biosorption followed the monolayer coverage of cadmium ions at the biomass surface.The maximum cadmium biosorption capacity for M. spicatum turns to be equal to 34.97 mg/g,whereas the amount of the adsorbed cadmium that was worked out by the Langmuirmodel should be in excellent consistency with thatobtained experimentally(exceptfortwo data points, the calculated data were very close to the experimental data,with deviations of less than 10%). Besides, the biosorption of cadmium by M. spicatum can be regarded as a thermo-dependent process, in which the cadmium biosorption capacity of M. spicatum increasedwith increasing temperature. If the constant temperatures range from 5 ℃ to 25 ℃, the calculated thermodynamic parameters would show that the cadmium biosorption of M. spicatum proves to be feasible, spontaneous, and endothermic in nature, whereas the coexisting calcium ions in the solutions may likely produce an adverse effect on the cadmium biosorption of M. spicatum." @default.
- W2371796798 created "2016-06-24" @default.
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- W2371796798 date "2013-01-01" @default.
- W2371796798 modified "2023-09-26" @default.
- W2371796798 title "Characteristics of cadmium biosorption onto Myriophyllum spicatum" @default.
- W2371796798 hasPublicationYear "2013" @default.
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