Asterococcus superbus as a biosorbent of copper, zinc, cadmium and lead: Adsorption isotherm and kinetic modelling
The adsorption capacity of copper, zinc, cadmium and lead by Asterococcus superbus, a freshwater microalgae, was studied in batch mode. The Langmuir, Freundlich, Temkin and Dubinin-Radushkevich models were applied and results demonstrate that for all cases the Langmuir model best describes the adsor...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_17434955_v7_n1_p83_Areco |
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todo:paper_17434955_v7_n1_p83_Areco2023-10-03T16:31:21Z Asterococcus superbus as a biosorbent of copper, zinc, cadmium and lead: Adsorption isotherm and kinetic modelling Areco, M.M. Rodríguez, M.C. Dos Santos Afonso, M. Adsorption isotherms Asterococcus superbus Biosorbents Cadmium Copper Dubinin-Radushkevich Freshwater algae Freundlich Intraparticle diffusion model Kinetics study Langmuir Lead Pseudo-first-order kinetic model Pseudo-second-order kinetic model Temkin Water contamination Zinc The adsorption capacity of copper, zinc, cadmium and lead by Asterococcus superbus, a freshwater microalgae, was studied in batch mode. The Langmuir, Freundlich, Temkin and Dubinin-Radushkevich models were applied and results demonstrate that for all cases the Langmuir model best describes the adsorption process and that A. superbus isotherm followed the bisorption series, Zn > Cu > Pb > Cd. Kinetic studies demonstrate that the adsorption of zinc and copper follows a pseudo-second-order kinetic model, and that of cadmium and lead follows a pseudo first-order kinetic model. Natural waters present an increasing concentration of heavy metals, mainly due to the effluent discharge in these type or reservoires. The importance of the present work is to contribute to the study of new methods to diminish the presence of heavy metals in natural waters. Copyright © 2014 Inderscience Enterprises Ltd. Fil:Areco, M.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rodríguez, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17434955_v7_n1_p83_Areco |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Adsorption isotherms Asterococcus superbus Biosorbents Cadmium Copper Dubinin-Radushkevich Freshwater algae Freundlich Intraparticle diffusion model Kinetics study Langmuir Lead Pseudo-first-order kinetic model Pseudo-second-order kinetic model Temkin Water contamination Zinc |
| spellingShingle |
Adsorption isotherms Asterococcus superbus Biosorbents Cadmium Copper Dubinin-Radushkevich Freshwater algae Freundlich Intraparticle diffusion model Kinetics study Langmuir Lead Pseudo-first-order kinetic model Pseudo-second-order kinetic model Temkin Water contamination Zinc Areco, M.M. Rodríguez, M.C. Dos Santos Afonso, M. Asterococcus superbus as a biosorbent of copper, zinc, cadmium and lead: Adsorption isotherm and kinetic modelling |
| topic_facet |
Adsorption isotherms Asterococcus superbus Biosorbents Cadmium Copper Dubinin-Radushkevich Freshwater algae Freundlich Intraparticle diffusion model Kinetics study Langmuir Lead Pseudo-first-order kinetic model Pseudo-second-order kinetic model Temkin Water contamination Zinc |
| description |
The adsorption capacity of copper, zinc, cadmium and lead by Asterococcus superbus, a freshwater microalgae, was studied in batch mode. The Langmuir, Freundlich, Temkin and Dubinin-Radushkevich models were applied and results demonstrate that for all cases the Langmuir model best describes the adsorption process and that A. superbus isotherm followed the bisorption series, Zn > Cu > Pb > Cd. Kinetic studies demonstrate that the adsorption of zinc and copper follows a pseudo-second-order kinetic model, and that of cadmium and lead follows a pseudo first-order kinetic model. Natural waters present an increasing concentration of heavy metals, mainly due to the effluent discharge in these type or reservoires. The importance of the present work is to contribute to the study of new methods to diminish the presence of heavy metals in natural waters. Copyright © 2014 Inderscience Enterprises Ltd. |
| format |
JOUR |
| author |
Areco, M.M. Rodríguez, M.C. Dos Santos Afonso, M. |
| author_facet |
Areco, M.M. Rodríguez, M.C. Dos Santos Afonso, M. |
| author_sort |
Areco, M.M. |
| title |
Asterococcus superbus as a biosorbent of copper, zinc, cadmium and lead: Adsorption isotherm and kinetic modelling |
| title_short |
Asterococcus superbus as a biosorbent of copper, zinc, cadmium and lead: Adsorption isotherm and kinetic modelling |
| title_full |
Asterococcus superbus as a biosorbent of copper, zinc, cadmium and lead: Adsorption isotherm and kinetic modelling |
| title_fullStr |
Asterococcus superbus as a biosorbent of copper, zinc, cadmium and lead: Adsorption isotherm and kinetic modelling |
| title_full_unstemmed |
Asterococcus superbus as a biosorbent of copper, zinc, cadmium and lead: Adsorption isotherm and kinetic modelling |
| title_sort |
asterococcus superbus as a biosorbent of copper, zinc, cadmium and lead: adsorption isotherm and kinetic modelling |
| url |
http://hdl.handle.net/20.500.12110/paper_17434955_v7_n1_p83_Areco |
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AT arecomm asterococcussuperbusasabiosorbentofcopperzinccadmiumandleadadsorptionisothermandkineticmodelling AT rodriguezmc asterococcussuperbusasabiosorbentofcopperzinccadmiumandleadadsorptionisothermandkineticmodelling AT dossantosafonsom asterococcussuperbusasabiosorbentofcopperzinccadmiumandleadadsorptionisothermandkineticmodelling |
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