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- W2354877997 abstract "The paper wishes to introduce our investigation of the chitosan function in absorbing lead Ⅱ (Pb~(2+) ) from the contaminated soil under different experimental conditions, such as the pH value, adsorption time and chitosan concentration Besides, it has also given evaluations to the thermodynamics models that can be applied to the adsorption of Pb~(2+) by chitosan for Langmuir and Freundlich, and to the kinetic models applied to the adsorption of Pb~(2+) by chitosan for the Lagergren first-order, HO YS second-order, Elovich equation and intraparticle diffusion, respectively. The results of our evaluations show that at a pH of 5 and temperature of 45 ℃, the removing rate can reach 46.3 % of Pb~(2+) from the contaminated soil sample. The function of the adsorption here mentioned includes physical adsorption and chemisorptions, through which the system can release heat and the negative value of △ G. It can also be concluded that the Freundlich thermodynamics model was found to be closely correlated with the experimental data (R~2= 0.998 7), while HO YS second-order kinetic model was found in conformity with ehe experimental data ( R~2 = 0.991 2). Thus, the results of given study are expected to provide valuable references to the environmental migration and lowering of lead and soil contamination and enhanced extraction of lead by chitosan." @default.
- W2354877997 created "2016-06-24" @default.
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- W2354877997 date "2009-01-01" @default.
- W2354877997 modified "2023-09-24" @default.
- W2354877997 title "Absorption of chitosan for lead (II) from the contaminated soil" @default.
- W2354877997 hasPublicationYear "2009" @default.
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