30 KB225 KB20 KB200020242013Al-Jlil, Saad A.Latif, Mohammad Sajidštevilka:4letnik:47str. 481-486COBISSID:1004714ISSN:1580-2949URN:URN:NBN:SI:doc-AYIGRXUUenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijeadsorpcijabakerbentonitizotermenikeljodpadne vodeEvaluation of equilibrium isotherm models for the adsorption of Cu and Ni from wastewater on bentonite clay| Ocena modelov ravnotežnih izoterm za adsorpcijo Cu in Ni iz odpadnih vod na bentonitno glino|A study was carried out to evaluate equilibrium isotherm models for the adsorption of Cu and Ni on bentonite clay from wastewater. The adsorption of Cu and Ni increased with an increase in the pH and was high at the pH values of around 7. The adsorption capacity of bentonite clay increased with an increase in the temperature. The maximum adsorption capacity of bentonite clay was 11.12 mg gsup{-1} and 6.78 mg gsup{-1} for Cu and Ni, respectively at 20 °C. Among the three equilibrium isotherm models used, the Langmuir-Freundlich isotherm model described the experimental data well at different temperaturesIzvršena je bila študija ocene modelov ravnotežnih izoterm pri adsorpciji Cu in Ni iz odpadnih vod na bentonitno glino. Adsorpcija bakra in niklja narašča z naraščanjem pH in je velika pri pH vrednostih okrog 7. Adsorpcijska zmogljivost bentonitne gline se povečuje z naraščanjem temperature. Največja zmogljivost adsorpcije bentonitne gline je bila 11,12 mg gna{-1} in in 6,78 mg gna{-1} za Cu in Ni pri 20 °C. Med tremi modeli ravnotežnih izoterm pa dobro opisuje eksperimentalne podatke pri različnih temperaturah izotermni model Langmuir-FreundlichTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije