Removal of Pb(II) ions from aqueous solutions by litchi pericarp and its leachate
| Autor: | Yi-min Pan, Er-qin Yin, Hao Zheng, Rui-xue Jiang, Ji-li Yang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
021110 strategic
defence & security studies Langmuir Aqueous solution Kinetic model Chemistry Kinetics 0211 other engineering and technologies Metals and Alloys General Engineering 02 engineering and technology 010501 environmental sciences 01 natural sciences Ion Adsorption Freundlich equation Leachate 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Journal of Central South University. 23:1626-1632 |
| ISSN: | 2227-5223 2095-2899 |
| DOI: | 10.1007/s11771-016-3217-7 |
| Popis: | The adsorption capacity of Pb(II) on litchi pericarps was investigated as a function of temperature, pH, and adsorbent dose using batch experiments. The experimental data obtained were evaluated using adsorption equilibrium isotherms and a kinetic model. Additionally, the removal of Pb(II) in leachate of litchi pericarps was also evaluated. The results show that litchi pericarps exhibit a high adsorption capacity to Pb(II), with the maximum removal efficiency occurring at a temperature of 25 °C, a pH of 6.0−7.0 and an adsorbent dosage of 10 g/L. Langmuir and Freundlich isotherms and the pseudo-second-order kinetic model can all fit the equilibrium adsorption satisfactorily, with correlation coefficients (R 2) of 0.9935, 0.9918 and 1.0, respectively. An average removal efficiency of 66.65% is found for Pb(II) in leachate of litchi pericarps. |
| Databáze: | OpenAIRE |
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