Equilibrium and kinetic studies of Pb(II), Cd(II) and Zn(II) sorption by Lagenaria vulgaris shell
The sorption of lead, cadmium and zinc ions from aqueous solution by Lagenaria vulgaris shell biosorbent (LVB) in batch system was investigated. The effect of relevant parameters such as contact time, biosorbent dosage and initial metal ions concentration was evaluated. The Pb(II), Cd(II) and Zn(...
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| Format: | Article |
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Association of the Chemical Engineers of Serbia
2012-01-01
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| Series: | Chemical Industry and Chemical Engineering Quarterly |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1451-9372/2012/1451-93721200032M.pdf |
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| author | Mitić-Stojanović Dragana-Linda Bojić Danijela Mitrović Jelena Anđelković Tatjana Radović Miljana Bojić Аleksandar Lj. |
| author_facet | Mitić-Stojanović Dragana-Linda Bojić Danijela Mitrović Jelena Anđelković Tatjana Radović Miljana Bojić Аleksandar Lj. |
| author_sort | Mitić-Stojanović Dragana-Linda |
| collection | DOAJ |
| description | The sorption of lead, cadmium and zinc ions from aqueous solution by Lagenaria vulgaris shell biosorbent (LVB) in batch system was investigated. The effect of relevant parameters such as contact time, biosorbent dosage and initial metal ions concentration was evaluated. The Pb(II), Cd(II) and Zn(II) sorption equilibrium (when 98% of initial metal ions were sorbed) was attained within 15, 20 and 25 min, respectively. The pseudo first, pseudo-second order, Chrastil’s and intra-particle diffusion models were used to describe the kinetic data. The experimental data fitted the pseudo-second order kinetic model and intra-particle diffusion model. Removal efficiency of lead(II), cadmium(II) and zinc(II) ions rapidly increased with increasing biosorbent dose from 0.5 to 8.0 g dm-3. Optimal biosorbent dose was set to 4.0 g dm-3. An increase in the initial metal concentration increases the sorption capacity. The sorption data of investigated metal ions are fitted to Langmuir, Freundlich and Temkin isotherm models. Langmuir model best fitted the equilibrium data (r2 > 0.99). Maximal sorption capacities of LVB for Pb(II), Cd(II) and Zn(II) at 25.0±0.5°C were 0.130, 0.103 and 0.098 mM g-1, respectively. The desorption experiments showed that the LVB could be reused for six cycles with a minimum loss of the initial sorption capacity. |
| first_indexed | 2024-12-11T00:58:45Z |
| format | Article |
| id | doaj.art-3fa6a080bd624032b7752b7307823ac1 |
| institution | Directory Open Access Journal |
| issn | 1451-9372 2217-7434 |
| language | English |
| last_indexed | 2024-12-11T00:58:45Z |
| publishDate | 2012-01-01 |
| publisher | Association of the Chemical Engineers of Serbia |
| record_format | Article |
| series | Chemical Industry and Chemical Engineering Quarterly |
| spelling | doaj.art-3fa6a080bd624032b7752b7307823ac12022-12-22T01:26:23ZengAssociation of the Chemical Engineers of SerbiaChemical Industry and Chemical Engineering Quarterly1451-93722217-74342012-01-01184-156357610.2298/CICEQ111117032MEquilibrium and kinetic studies of Pb(II), Cd(II) and Zn(II) sorption by Lagenaria vulgaris shellMitić-Stojanović Dragana-LindaBojić DanijelaMitrović JelenaAnđelković TatjanaRadović MiljanaBojić Аleksandar Lj.The sorption of lead, cadmium and zinc ions from aqueous solution by Lagenaria vulgaris shell biosorbent (LVB) in batch system was investigated. The effect of relevant parameters such as contact time, biosorbent dosage and initial metal ions concentration was evaluated. The Pb(II), Cd(II) and Zn(II) sorption equilibrium (when 98% of initial metal ions were sorbed) was attained within 15, 20 and 25 min, respectively. The pseudo first, pseudo-second order, Chrastil’s and intra-particle diffusion models were used to describe the kinetic data. The experimental data fitted the pseudo-second order kinetic model and intra-particle diffusion model. Removal efficiency of lead(II), cadmium(II) and zinc(II) ions rapidly increased with increasing biosorbent dose from 0.5 to 8.0 g dm-3. Optimal biosorbent dose was set to 4.0 g dm-3. An increase in the initial metal concentration increases the sorption capacity. The sorption data of investigated metal ions are fitted to Langmuir, Freundlich and Temkin isotherm models. Langmuir model best fitted the equilibrium data (r2 > 0.99). Maximal sorption capacities of LVB for Pb(II), Cd(II) and Zn(II) at 25.0±0.5°C were 0.130, 0.103 and 0.098 mM g-1, respectively. The desorption experiments showed that the LVB could be reused for six cycles with a minimum loss of the initial sorption capacity.http://www.doiserbia.nb.rs/img/doi/1451-9372/2012/1451-93721200032M.pdfSorptionLagenaria vulgarisheavy metalskineticsisotherms |
| spellingShingle | Mitić-Stojanović Dragana-Linda Bojić Danijela Mitrović Jelena Anđelković Tatjana Radović Miljana Bojić Аleksandar Lj. Equilibrium and kinetic studies of Pb(II), Cd(II) and Zn(II) sorption by Lagenaria vulgaris shell Chemical Industry and Chemical Engineering Quarterly Sorption Lagenaria vulgaris heavy metals kinetics isotherms |
| title | Equilibrium and kinetic studies of Pb(II), Cd(II) and Zn(II) sorption by Lagenaria vulgaris shell |
| title_full | Equilibrium and kinetic studies of Pb(II), Cd(II) and Zn(II) sorption by Lagenaria vulgaris shell |
| title_fullStr | Equilibrium and kinetic studies of Pb(II), Cd(II) and Zn(II) sorption by Lagenaria vulgaris shell |
| title_full_unstemmed | Equilibrium and kinetic studies of Pb(II), Cd(II) and Zn(II) sorption by Lagenaria vulgaris shell |
| title_short | Equilibrium and kinetic studies of Pb(II), Cd(II) and Zn(II) sorption by Lagenaria vulgaris shell |
| title_sort | equilibrium and kinetic studies of pb ii cd ii and zn ii sorption by lagenaria vulgaris shell |
| topic | Sorption Lagenaria vulgaris heavy metals kinetics isotherms |
| url | http://www.doiserbia.nb.rs/img/doi/1451-9372/2012/1451-93721200032M.pdf |
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