Application of the Modified Biochar from Sewage Sludge for Removal of Pb(II) from Aqueous Solution: Kinetics, Equilibrium and Thermodynamic Studies
An adsorbent Modified Biochar (MB) made from sewage sludge was characterized with FT-IR spectra and SEM image. The effects of contact time, solution temperature, pH and initial concentration on the adsorption performance Pb(II) onto MB was investigated in a batch adsorption experiment. Results showe...
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| Format: | Article |
| Language: | English |
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Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2018-06-01
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| Series: | Iranian Journal of Chemistry & Chemical Engineering |
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| Online Access: | http://www.ijcce.ac.ir/article_30331_9d3415339016ae878e2ecaea18144824.pdf |
| _version_ | 1818824375662542848 |
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| author | Lequn Zhang Tao Yu Zhongren Nan Zhenjun Wu Bin Li Shunyi Li |
| author_facet | Lequn Zhang Tao Yu Zhongren Nan Zhenjun Wu Bin Li Shunyi Li |
| author_sort | Lequn Zhang |
| collection | DOAJ |
| description | An adsorbent Modified Biochar (MB) made from sewage sludge was characterized with FT-IR spectra and SEM image. The effects of contact time, solution temperature, pH and initial concentration on the adsorption performance Pb(II) onto MB was investigated in a batch adsorption experiment. Results showed that MB had great adsorption capacity, due to the existence of hydroxyl, carboxyl, ether, alcohol and amino groups. As the contact time prolonged, the adsorption quantity of MB increased sharply first and then tended to the balance. The adsorption capacity increased slightly with the temperature increase. The effect of pH on the absorbability of MB was non-linear, and the maximum adsorption capacity was obtained when the pH was approximately 6. The adsorption capacity increased abruptly first and then become slowly with the initial concentration increase. Compared with the pseudo-first-order, the pseudo-second-order kinetic models were more suitable to test the kinetic experimental data. Equilibrium data were analyzed using the Langmuir and Freundlich isotherm models and it was found to correspond to the Langmuir isotherm model better. |
| first_indexed | 2024-12-18T23:54:53Z |
| format | Article |
| id | doaj.art-18b1c2c0d8174724b40d9aa2ffc14cbd |
| institution | Directory Open Access Journal |
| issn | 1021-9986 1021-9986 |
| language | English |
| last_indexed | 2024-12-18T23:54:53Z |
| publishDate | 2018-06-01 |
| publisher | Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR |
| record_format | Article |
| series | Iranian Journal of Chemistry & Chemical Engineering |
| spelling | doaj.art-18b1c2c0d8174724b40d9aa2ffc14cbd2022-12-21T20:46:44ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering1021-99861021-99862018-06-0137316116930331Application of the Modified Biochar from Sewage Sludge for Removal of Pb(II) from Aqueous Solution: Kinetics, Equilibrium and Thermodynamic StudiesLequn Zhang0Tao Yu1Zhongren Nan2Zhenjun Wu3Bin Li4Shunyi Li5Key Laboratory of Western China’ s Environmental System, Ministry of Education, College of Resource and Environment, Lanzhou University, Lanzhou 730000, Gansu, P.R. CHINASchool of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, P.R. CHINAKey Laboratory of Western China’ s Environmental System, Ministry of Education, College of Resource and Environment, Lanzhou University, Lanzhou 730000, Gansu, P.R. CHINAchool of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, Henan, P.R. CHINAchool of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, Henan, P.R. CHINAchool of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, Henan, P.R. CHINAAn adsorbent Modified Biochar (MB) made from sewage sludge was characterized with FT-IR spectra and SEM image. The effects of contact time, solution temperature, pH and initial concentration on the adsorption performance Pb(II) onto MB was investigated in a batch adsorption experiment. Results showed that MB had great adsorption capacity, due to the existence of hydroxyl, carboxyl, ether, alcohol and amino groups. As the contact time prolonged, the adsorption quantity of MB increased sharply first and then tended to the balance. The adsorption capacity increased slightly with the temperature increase. The effect of pH on the absorbability of MB was non-linear, and the maximum adsorption capacity was obtained when the pH was approximately 6. The adsorption capacity increased abruptly first and then become slowly with the initial concentration increase. Compared with the pseudo-first-order, the pseudo-second-order kinetic models were more suitable to test the kinetic experimental data. Equilibrium data were analyzed using the Langmuir and Freundlich isotherm models and it was found to correspond to the Langmuir isotherm model better.http://www.ijcce.ac.ir/article_30331_9d3415339016ae878e2ecaea18144824.pdfpb(ii)modified biocharadsorption kineticsadsorption isothermsadsorption mechanism |
| spellingShingle | Lequn Zhang Tao Yu Zhongren Nan Zhenjun Wu Bin Li Shunyi Li Application of the Modified Biochar from Sewage Sludge for Removal of Pb(II) from Aqueous Solution: Kinetics, Equilibrium and Thermodynamic Studies Iranian Journal of Chemistry & Chemical Engineering pb(ii) modified biochar adsorption kinetics adsorption isotherms adsorption mechanism |
| title | Application of the Modified Biochar from Sewage Sludge for Removal of Pb(II) from Aqueous Solution: Kinetics, Equilibrium and Thermodynamic Studies |
| title_full | Application of the Modified Biochar from Sewage Sludge for Removal of Pb(II) from Aqueous Solution: Kinetics, Equilibrium and Thermodynamic Studies |
| title_fullStr | Application of the Modified Biochar from Sewage Sludge for Removal of Pb(II) from Aqueous Solution: Kinetics, Equilibrium and Thermodynamic Studies |
| title_full_unstemmed | Application of the Modified Biochar from Sewage Sludge for Removal of Pb(II) from Aqueous Solution: Kinetics, Equilibrium and Thermodynamic Studies |
| title_short | Application of the Modified Biochar from Sewage Sludge for Removal of Pb(II) from Aqueous Solution: Kinetics, Equilibrium and Thermodynamic Studies |
| title_sort | application of the modified biochar from sewage sludge for removal of pb ii from aqueous solution kinetics equilibrium and thermodynamic studies |
| topic | pb(ii) modified biochar adsorption kinetics adsorption isotherms adsorption mechanism |
| url | http://www.ijcce.ac.ir/article_30331_9d3415339016ae878e2ecaea18144824.pdf |
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