Adsorptive Removal of Dyes from Aqueous Solution by KMnO4-Modified Rice Husk and Rice Straw
Rice husk (RH) and rice stalk (RS), the abundant biomasses, have been tentatively explored as the renewable biochar which were prepared by means of hydrothermal and activation processes, and the synthetic procedure is quite simple and easy to be scaled up for industrial applications. In this work, t...
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| Language: | English |
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Wiley
2019-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/8359491 |
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| author | Xiaodong Li Yunjin Li |
| author_facet | Xiaodong Li Yunjin Li |
| author_sort | Xiaodong Li |
| collection | DOAJ |
| description | Rice husk (RH) and rice stalk (RS), the abundant biomasses, have been tentatively explored as the renewable biochar which were prepared by means of hydrothermal and activation processes, and the synthetic procedure is quite simple and easy to be scaled up for industrial applications. In this work, the removal of malachite green (MG) was investigated by KMnO4-treated RH and RS as the efficient adsorbents at various experimental conditions. Various operational parameters such as initial dye concentration, adsorbent dosage, and solution temperature in batch systems were investigated on the use of RH and RS. The adsorption isotherm model (Langmuir and Freundlich isotherms), kinetic model (pseudo-first-order, pseudo-second-order, and Elovich models), and the adsorption mechanism (intraparticle diffusion and Boyd models) were studied. It showed that that the Langmuir model and Elovich model are suitable for describing the adsorption process, and the diffusion rate of surface adsorption and the particle diffusion rate jointly affect the reaction rate of adsorption. This facile, efficient, and template-free synthesis strategy holds great promise for preparing novel porous biochar from renewable biomass resources for application in adsorbents. |
| format | Article |
| id | doaj-art-c32495c1d52e4b5ab126f051ec188d48 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-c32495c1d52e4b5ab126f051ec188d482025-02-03T01:32:46ZengWileyJournal of Chemistry2090-90632090-90712019-01-01201910.1155/2019/83594918359491Adsorptive Removal of Dyes from Aqueous Solution by KMnO4-Modified Rice Husk and Rice StrawXiaodong Li0Yunjin Li1Department of Basic Science, Jilin Jianzhu University, Changchun 130118, ChinaDepartment of Basic Science, Jilin Jianzhu University, Changchun 130118, ChinaRice husk (RH) and rice stalk (RS), the abundant biomasses, have been tentatively explored as the renewable biochar which were prepared by means of hydrothermal and activation processes, and the synthetic procedure is quite simple and easy to be scaled up for industrial applications. In this work, the removal of malachite green (MG) was investigated by KMnO4-treated RH and RS as the efficient adsorbents at various experimental conditions. Various operational parameters such as initial dye concentration, adsorbent dosage, and solution temperature in batch systems were investigated on the use of RH and RS. The adsorption isotherm model (Langmuir and Freundlich isotherms), kinetic model (pseudo-first-order, pseudo-second-order, and Elovich models), and the adsorption mechanism (intraparticle diffusion and Boyd models) were studied. It showed that that the Langmuir model and Elovich model are suitable for describing the adsorption process, and the diffusion rate of surface adsorption and the particle diffusion rate jointly affect the reaction rate of adsorption. This facile, efficient, and template-free synthesis strategy holds great promise for preparing novel porous biochar from renewable biomass resources for application in adsorbents.http://dx.doi.org/10.1155/2019/8359491 |
| spellingShingle | Xiaodong Li Yunjin Li Adsorptive Removal of Dyes from Aqueous Solution by KMnO4-Modified Rice Husk and Rice Straw Journal of Chemistry |
| title | Adsorptive Removal of Dyes from Aqueous Solution by KMnO4-Modified Rice Husk and Rice Straw |
| title_full | Adsorptive Removal of Dyes from Aqueous Solution by KMnO4-Modified Rice Husk and Rice Straw |
| title_fullStr | Adsorptive Removal of Dyes from Aqueous Solution by KMnO4-Modified Rice Husk and Rice Straw |
| title_full_unstemmed | Adsorptive Removal of Dyes from Aqueous Solution by KMnO4-Modified Rice Husk and Rice Straw |
| title_short | Adsorptive Removal of Dyes from Aqueous Solution by KMnO4-Modified Rice Husk and Rice Straw |
| title_sort | adsorptive removal of dyes from aqueous solution by kmno4 modified rice husk and rice straw |
| url | http://dx.doi.org/10.1155/2019/8359491 |
| work_keys_str_mv | AT xiaodongli adsorptiveremovalofdyesfromaqueoussolutionbykmno4modifiedricehuskandricestraw AT yunjinli adsorptiveremovalofdyesfromaqueoussolutionbykmno4modifiedricehuskandricestraw |