Fluoride Adsorption Comparison from Aqueous Solutions Using Al- and La-Modified Adsorbent Prepared from <i>Polygonum orientale</i> Linn.
Al- and La-modified adsorbent materials (PO–Al, PO–La) were prepared by impregnating <i>Polygonum orientale</i> Linn. straw with Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> and La(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</su...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/4/592 |
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| author | Shengli Shi Kangxu Zhao Qiyue Zhao Aiguo Luo Shulian Xie Jia Feng |
| author_facet | Shengli Shi Kangxu Zhao Qiyue Zhao Aiguo Luo Shulian Xie Jia Feng |
| author_sort | Shengli Shi |
| collection | DOAJ |
| description | Al- and La-modified adsorbent materials (PO–Al, PO–La) were prepared by impregnating <i>Polygonum orientale</i> Linn. straw with Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> and La(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O solutions. The potential of removing fluoride using these modified adsorbents was examined. In the PO, PO–Al and PO–La adsorption systems, the fluoride adsorption process followed pseudo-second-order kinetics, and the kinetic constants for k<sub>2</sub> and R<sup>2</sup> were 0.0276 and 0.9609; 0.2070 and 0.9994; 0.1266 and 0.9933, respectively. The adsorption equilibrium results showed the best match with Langmuir isotherms. Moreover, the maximum monolayer adsorption capacity of PO, PO–Al and PO–La are 0.0923, 3.3190 and 1.2514 mg/g, respectively, in 30 °C. The regeneration results show that the effectively regenerating ability of modified adsorbents. Al-modified adsorbent showed the best results in terms of cost-effectiveness and adsorption efficiency for fluoride adsorption. |
| first_indexed | 2024-03-09T20:50:44Z |
| format | Article |
| id | doaj.art-88b30b45f8804c1db9a0ca7a6492929c |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T20:50:44Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-88b30b45f8804c1db9a0ca7a6492929c2023-11-23T22:34:24ZengMDPI AGWater2073-44412022-02-0114459210.3390/w14040592Fluoride Adsorption Comparison from Aqueous Solutions Using Al- and La-Modified Adsorbent Prepared from <i>Polygonum orientale</i> Linn.Shengli Shi0Kangxu Zhao1Qiyue Zhao2Aiguo Luo3Shulian Xie4Jia Feng5Department of Biological Science and Technology, Jinzhong University, Jinzhong 030600, ChinaShanxi Key Laboratory for Research and Development of Regional Plants, School of Life Science, Shanxi University, Taiyuan 030006, ChinaShanxi Key Laboratory for Research and Development of Regional Plants, School of Life Science, Shanxi University, Taiyuan 030006, ChinaDepartment of Biological Science and Technology, Jinzhong University, Jinzhong 030600, ChinaShanxi Key Laboratory for Research and Development of Regional Plants, School of Life Science, Shanxi University, Taiyuan 030006, ChinaShanxi Key Laboratory for Research and Development of Regional Plants, School of Life Science, Shanxi University, Taiyuan 030006, ChinaAl- and La-modified adsorbent materials (PO–Al, PO–La) were prepared by impregnating <i>Polygonum orientale</i> Linn. straw with Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> and La(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O solutions. The potential of removing fluoride using these modified adsorbents was examined. In the PO, PO–Al and PO–La adsorption systems, the fluoride adsorption process followed pseudo-second-order kinetics, and the kinetic constants for k<sub>2</sub> and R<sup>2</sup> were 0.0276 and 0.9609; 0.2070 and 0.9994; 0.1266 and 0.9933, respectively. The adsorption equilibrium results showed the best match with Langmuir isotherms. Moreover, the maximum monolayer adsorption capacity of PO, PO–Al and PO–La are 0.0923, 3.3190 and 1.2514 mg/g, respectively, in 30 °C. The regeneration results show that the effectively regenerating ability of modified adsorbents. Al-modified adsorbent showed the best results in terms of cost-effectiveness and adsorption efficiency for fluoride adsorption.https://www.mdpi.com/2073-4441/14/4/592fluoride<i>Polygonum orientale</i> Linn.modifiedadsorptionwastewater |
| spellingShingle | Shengli Shi Kangxu Zhao Qiyue Zhao Aiguo Luo Shulian Xie Jia Feng Fluoride Adsorption Comparison from Aqueous Solutions Using Al- and La-Modified Adsorbent Prepared from <i>Polygonum orientale</i> Linn. Water fluoride <i>Polygonum orientale</i> Linn. modified adsorption wastewater |
| title | Fluoride Adsorption Comparison from Aqueous Solutions Using Al- and La-Modified Adsorbent Prepared from <i>Polygonum orientale</i> Linn. |
| title_full | Fluoride Adsorption Comparison from Aqueous Solutions Using Al- and La-Modified Adsorbent Prepared from <i>Polygonum orientale</i> Linn. |
| title_fullStr | Fluoride Adsorption Comparison from Aqueous Solutions Using Al- and La-Modified Adsorbent Prepared from <i>Polygonum orientale</i> Linn. |
| title_full_unstemmed | Fluoride Adsorption Comparison from Aqueous Solutions Using Al- and La-Modified Adsorbent Prepared from <i>Polygonum orientale</i> Linn. |
| title_short | Fluoride Adsorption Comparison from Aqueous Solutions Using Al- and La-Modified Adsorbent Prepared from <i>Polygonum orientale</i> Linn. |
| title_sort | fluoride adsorption comparison from aqueous solutions using al and la modified adsorbent prepared from i polygonum orientale i linn |
| topic | fluoride <i>Polygonum orientale</i> Linn. modified adsorption wastewater |
| url | https://www.mdpi.com/2073-4441/14/4/592 |
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