Removal of Pb (II) from Aqueous Solutions Using Waste Tea Leaves
Background: The presence of lead in natural waters has become an important issue around the world. Lead has been identified as a highly toxic metal that can cause severe environmental and public health problems and its decontamination is of utmost importance. The aim of this work was to evaluate the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Arak University of Medical Sciences
2015-03-01
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| Series: | Iranian Journal of Toxicology |
| Subjects: | |
| Online Access: | http://ijt.arakmu.ac.ir/browse.php?a_id=398&sid=1&slc_lang=en |
| _version_ | 1818060977725243392 |
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| author | Mehrdad Cheraghi Soheil Sobhanardakani Raziyeh Zandipak Bahareh Lorestani Hajar Merrikhpour |
| author_facet | Mehrdad Cheraghi Soheil Sobhanardakani Raziyeh Zandipak Bahareh Lorestani Hajar Merrikhpour |
| author_sort | Mehrdad Cheraghi |
| collection | DOAJ |
| description | Background: The presence of lead in natural waters has become an important issue around the world. Lead has been identified as a highly toxic metal that can cause severe environmental and public health problems and its decontamination is of utmost importance. The aim of this work was to evaluate the adsorption of lead (Pb(II)) on waste tea leaves as a cheap purification method.
Methods: In this experimental study, prepared waste tea leaves were used as adsorbent for the removal of Pb (II) from aqueous solutions. Adsorption experiments were carried out as batch studies at different contact time, pH, amount of adsorbent, initial metal concentration and temperature.
Results: The results showed that maximum removal efficiency was observed at pH 6. Also the adsorption of Pb (II) ions increased with decreasing initial metal concentration. The Langmuir isotherm model fits well with the equilibrium adsorption isotherm data and its calculated maximum monolayer adsorption capacity was 166.6 mg g-1 at a temperature of 25±0.1˚C. The kinetic data obtained have been analyzed using pseudo-first-order and pseudo-second-order models. The best fitted kinetic model was found to be pseudo-second-order.
Conclusion: The results suggest that tea wastes could be employed as cheap material for the removal of lead from aqueous solutions. |
| first_indexed | 2024-12-10T13:41:00Z |
| format | Article |
| id | doaj.art-34fd2667e0a5436ba23b81ff1a4f5ddf |
| institution | Directory Open Access Journal |
| issn | 2008-2967 2251-9459 |
| language | English |
| last_indexed | 2024-12-10T13:41:00Z |
| publishDate | 2015-03-01 |
| publisher | Arak University of Medical Sciences |
| record_format | Article |
| series | Iranian Journal of Toxicology |
| spelling | doaj.art-34fd2667e0a5436ba23b81ff1a4f5ddf2022-12-22T01:46:41ZengArak University of Medical SciencesIranian Journal of Toxicology2008-29672251-94592015-03-0192812471253Removal of Pb (II) from Aqueous Solutions Using Waste Tea LeavesMehrdad Cheraghi0Soheil Sobhanardakani 1Raziyeh Zandipak 2Bahareh Lorestani 3Hajar Merrikhpour 4Department of Environment, Hamedan Branch, Islamic Azad University, Hamedan, Iran.*Corresponding Author: E-mail: cheraghi@iauh.ac.ir Department of Environment, Hamedan Branch, Islamic Azad University, Hamedan, Iran.MSc of Environmental Sciences, Young Researchers & Elite Club, Hamedan Branch, Islamic Azad University, Hamedan, Iran. Department of Environment, Hamedan Branch, Islamic Azad University, Hamedan, Iran.Department of Chemistry, University of Sayyed Jamaleddin Asadabadi, Asadabad, Iran.Background: The presence of lead in natural waters has become an important issue around the world. Lead has been identified as a highly toxic metal that can cause severe environmental and public health problems and its decontamination is of utmost importance. The aim of this work was to evaluate the adsorption of lead (Pb(II)) on waste tea leaves as a cheap purification method. Methods: In this experimental study, prepared waste tea leaves were used as adsorbent for the removal of Pb (II) from aqueous solutions. Adsorption experiments were carried out as batch studies at different contact time, pH, amount of adsorbent, initial metal concentration and temperature. Results: The results showed that maximum removal efficiency was observed at pH 6. Also the adsorption of Pb (II) ions increased with decreasing initial metal concentration. The Langmuir isotherm model fits well with the equilibrium adsorption isotherm data and its calculated maximum monolayer adsorption capacity was 166.6 mg g-1 at a temperature of 25±0.1˚C. The kinetic data obtained have been analyzed using pseudo-first-order and pseudo-second-order models. The best fitted kinetic model was found to be pseudo-second-order. Conclusion: The results suggest that tea wastes could be employed as cheap material for the removal of lead from aqueous solutions.http://ijt.arakmu.ac.ir/browse.php?a_id=398&sid=1&slc_lang=enChemical Water PollutionLeadTeaWater Purification. |
| spellingShingle | Mehrdad Cheraghi Soheil Sobhanardakani Raziyeh Zandipak Bahareh Lorestani Hajar Merrikhpour Removal of Pb (II) from Aqueous Solutions Using Waste Tea Leaves Iranian Journal of Toxicology Chemical Water Pollution Lead Tea Water Purification. |
| title | Removal of Pb (II) from Aqueous Solutions Using Waste Tea Leaves |
| title_full | Removal of Pb (II) from Aqueous Solutions Using Waste Tea Leaves |
| title_fullStr | Removal of Pb (II) from Aqueous Solutions Using Waste Tea Leaves |
| title_full_unstemmed | Removal of Pb (II) from Aqueous Solutions Using Waste Tea Leaves |
| title_short | Removal of Pb (II) from Aqueous Solutions Using Waste Tea Leaves |
| title_sort | removal of pb ii from aqueous solutions using waste tea leaves |
| topic | Chemical Water Pollution Lead Tea Water Purification. |
| url | http://ijt.arakmu.ac.ir/browse.php?a_id=398&sid=1&slc_lang=en |
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