kinetic and thermodynamic studies of adsorption of 4-chloro-2-nitrophenol on nano- ti02
نویسندگان
چکیده
adsorption capacity of 4-chloro-2-nitrophenol (4c2np) onto nano-ti02 from aqueous solutions wasinvestigated in a batch system by considering the effects of various parameters like contact time, nano-tio2 dosage, initial ph and initial 4c2np concentration. optimum conditions for 4c2np adsorptionwere found to be initial ph z 2, nano-tio2 closer- 0.01 g and equilibrium time 1 h. the adsorptionkinetic data were analyzed using pseudo-first and pseudo-second order models. it was found that thepseudo-second-order kinetic model was the most appropriate model, describing the adsorption kinetics.the thermodynamic parameters such as ag°, mp and as° were computed from the experimental data.these values show that the adsorption of 4c2np onto nano-ti02 is spontaneous and endothermic.
منابع مشابه
Kinetic and thermodynamic studies of adsorption of 4-chloro-2-nitrophenol on nano- Ti02
Adsorption capacity of 4-chloro-2-nitrophenol (4C2NP) onto nano-Ti02 from aqueous solutions wasinvestigated in a batch system by considering the effects of various parameters like contact time, nano-TiO2 dosage, initial pH and initial 4C2NP concentration. Optimum conditions for 4C2NP adsorptionwere found to be initial pH z 2, nano-TiO2 closer- 0.01 g and equilibrium time 1 h. The adsorptionkine...
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عنوان ژورنال:
journal of physical & theoretical chemistryISSN
دوره 8
شماره 1 2011
میزبانی شده توسط پلتفرم ابری doprax.com
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