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- W2149695230 abstract "The removal of cadmium ions from aqueous solutions is described using polyethyleneimine (PEI) entrapped in sol-gel matrices. The process is optimized with respect to operating conditions and both sorption and desorption are considered. The sorption process followed the Langmuir isotherm, and the corresponding Langmuir constants qmax and Kdwere found to be 80.64 mg Cd2+/g PEI and 236.36 mg/L, respectively, using the immobilized PEI polymer. More than 90% of the cadmium could be recovered in 2 h using 2 M NaCl solutions. This technique has potential applications in the recovery of cadmium in aqueous waste streams. On dècrit le retrait de cadmium de solutions aqueuses en utilisant du polyèthyeáneimine piègè dans des matrices sol-gel. Le procèdè est optimisè en tenant compte des conditions de fonctionnement, et la sorption et la dèsorption sont toutes deux considèrèes. Le procèdè de sorption suit l'isotherme de Langmuir, et on a trouvè que les constantes de Langmuir correspondantes qmax et Kdètaient de 80,64 mg Cd2 g PE1 et 236,36 mg/L, respectivement, avec le polymeáre PEI immobilisè. Plus de 90% du cadmium a pu ětre rècupèrè en 2 heures à l'aide de solutions de NaCl 2M. Cette technique a des applications potentielles dans la rècupèration du cadmium dans les effluents rèsiduels." @default.
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- W2149695230 date "1999-10-01" @default.
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- W2149695230 title "Polyethyleneimine-containing sol-gels as novel sorbents for the removal of cadmium from aqueous solutions" @default.
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- W2149695230 doi "https://doi.org/10.1002/cjce.5450770520" @default.
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