Removal of Cd(II) and Cu(II) from Aqueous Solution by Na+-Modified Pisha Sandstone
Heavy metals have caused serious environmental issues, which are enriched during open-cast coal mining. It is urgent to develop sustainable remediation materials to protect and restore the contaminated soil and aquifers in mining areas. The feasibility of applying Pisha sandstone (PS) and Na+-modifi...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2020/2805479 |
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| author | Xia Wang Yongxing Cui Qi Peng Chenbin Fan Zhiqin Zhang Xingchang Zhang |
| author_facet | Xia Wang Yongxing Cui Qi Peng Chenbin Fan Zhiqin Zhang Xingchang Zhang |
| author_sort | Xia Wang |
| collection | DOAJ |
| description | Heavy metals have caused serious environmental issues, which are enriched during open-cast coal mining. It is urgent to develop sustainable remediation materials to protect and restore the contaminated soil and aquifers in mining areas. The feasibility of applying Pisha sandstone (PS) and Na+-modified Pisha sandstone (Na-PS) for adsorption of heavy metals was evaluated. Na-PS exhibited maximum Cd(II) and Cu(II) removal rates of 65.9% and 99.8%, respectively, exceeding the corresponding values for PS (8.2% and 1.3%, respectively) in 1 × 10−3 M solution. Efficient heavy metals adsorption occurred in the pH range 5.0–6.0. The adsorption of Cu(II) and Cd(II) on PS and Na-PS was characterized by kinetic models and adsorption isotherms and was well represented by pseudo-second-order kinetics (R2 > 0.99) and the Langmuir and Freundlich isotherm models. The values of the thermodynamic parameters indicated that the interactions were spontaneous endothermic reactions. Binary solutions adsorption isotherms indicated that the linearity of the adsorption amount and initial concentration of Cu(II) and Cd(II) was better in certain ranges and the adsorbents were selective towards Cu(II) rather than Cd(II). Therefore, PSs can be used as excellent adsorbents for Cu(II) and Cd(II) remediation from contaminated surface water. |
| format | Article |
| id | doaj-art-a48e8e9eb6c54e2d8bcd39d0b5f7f7cc |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-a48e8e9eb6c54e2d8bcd39d0b5f7f7cc2025-02-03T01:26:57ZengWileyJournal of Chemistry2090-90632090-90712020-01-01202010.1155/2020/28054792805479Removal of Cd(II) and Cu(II) from Aqueous Solution by Na+-Modified Pisha SandstoneXia Wang0Yongxing Cui1Qi Peng2Chenbin Fan3Zhiqin Zhang4Xingchang Zhang5State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, ChinaInstitute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, ChinaCollege of Natural Resource and Environment, Northwest A&F University, Yangling, Shaanxi 712100, ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, ChinaHeavy metals have caused serious environmental issues, which are enriched during open-cast coal mining. It is urgent to develop sustainable remediation materials to protect and restore the contaminated soil and aquifers in mining areas. The feasibility of applying Pisha sandstone (PS) and Na+-modified Pisha sandstone (Na-PS) for adsorption of heavy metals was evaluated. Na-PS exhibited maximum Cd(II) and Cu(II) removal rates of 65.9% and 99.8%, respectively, exceeding the corresponding values for PS (8.2% and 1.3%, respectively) in 1 × 10−3 M solution. Efficient heavy metals adsorption occurred in the pH range 5.0–6.0. The adsorption of Cu(II) and Cd(II) on PS and Na-PS was characterized by kinetic models and adsorption isotherms and was well represented by pseudo-second-order kinetics (R2 > 0.99) and the Langmuir and Freundlich isotherm models. The values of the thermodynamic parameters indicated that the interactions were spontaneous endothermic reactions. Binary solutions adsorption isotherms indicated that the linearity of the adsorption amount and initial concentration of Cu(II) and Cd(II) was better in certain ranges and the adsorbents were selective towards Cu(II) rather than Cd(II). Therefore, PSs can be used as excellent adsorbents for Cu(II) and Cd(II) remediation from contaminated surface water.http://dx.doi.org/10.1155/2020/2805479 |
| spellingShingle | Xia Wang Yongxing Cui Qi Peng Chenbin Fan Zhiqin Zhang Xingchang Zhang Removal of Cd(II) and Cu(II) from Aqueous Solution by Na+-Modified Pisha Sandstone Journal of Chemistry |
| title | Removal of Cd(II) and Cu(II) from Aqueous Solution by Na+-Modified Pisha Sandstone |
| title_full | Removal of Cd(II) and Cu(II) from Aqueous Solution by Na+-Modified Pisha Sandstone |
| title_fullStr | Removal of Cd(II) and Cu(II) from Aqueous Solution by Na+-Modified Pisha Sandstone |
| title_full_unstemmed | Removal of Cd(II) and Cu(II) from Aqueous Solution by Na+-Modified Pisha Sandstone |
| title_short | Removal of Cd(II) and Cu(II) from Aqueous Solution by Na+-Modified Pisha Sandstone |
| title_sort | removal of cd ii and cu ii from aqueous solution by na modified pisha sandstone |
| url | http://dx.doi.org/10.1155/2020/2805479 |
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