Purification of arsenic-contaminated drinking water by Fe-Al-CO3 layered double hydroxide derived from secondary aluminum dross: adsorption and stabilization studies
Abstract This study aims to utilize secondary aluminum dross waste to synthesize Fe-Al layered double hydroxide (Fe-Al LDH) for efficient adsorption of arsenic from drinking water. The synthesis process was based on a multi-step hydrometallurgical approach, in which the aluminum content in the waste...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-025-85964-6 |
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| author | Mohammad Bozorgi Mostafa Mahinroosta Ali Allahverdi |
| author_facet | Mohammad Bozorgi Mostafa Mahinroosta Ali Allahverdi |
| author_sort | Mohammad Bozorgi |
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| description | Abstract This study aims to utilize secondary aluminum dross waste to synthesize Fe-Al layered double hydroxide (Fe-Al LDH) for efficient adsorption of arsenic from drinking water. The synthesis process was based on a multi-step hydrometallurgical approach, in which the aluminum content in the waste was first converted to sodium aluminate. This was followed by the transformation into Fe-Al LDH through a series of processes, including gelation, sol formation, simultaneous precipitation, and aging. A suitable crystal structure of the LDH adsorbent was successfully synthesized at a Fe: Al molar ratio of 3, a pH of 7, and an aging time of 12 h. The characterization tests revealed that the synthesized Fe-Al-LDH had an interlayer space of 7.5 Å, a specific surface area of 145 m2/g, and a pore volume of 0.57 cm3/g. The resulting Fe-Al-LDH was then used to adsorb arsenic from aqueous solutions. The results showed that the amount of arsenic adsorbed by the LDH was 0.144 mg/g at room temperature, the adsorbent dose of 0.5 g/L, pH = 7 and the initial arsenic concentration of 80 µg/L. The Fe-Al LDH reduced the amount of arsenic in the water below the standard value after a period of 40 min. In addition, the results showed that the Fe-Al LDH can stabilize arsenic species in its structure and thus prevent their re-release into the environment. |
| format | Article |
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| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-3bda190c942242d88e13cabed2fb09d92025-01-19T12:21:58ZengNature PortfolioScientific Reports2045-23222025-01-0115112010.1038/s41598-025-85964-6Purification of arsenic-contaminated drinking water by Fe-Al-CO3 layered double hydroxide derived from secondary aluminum dross: adsorption and stabilization studiesMohammad Bozorgi0Mostafa Mahinroosta1Ali Allahverdi2Research Laboratory of Inorganic Chemical Process Technologies, School of Chemical Engineering, University of Science and TechnologyResearch Laboratory of Inorganic Chemical Process Technologies, School of Chemical Engineering, University of Science and TechnologyResearch Laboratory of Inorganic Chemical Process Technologies, School of Chemical Engineering, University of Science and TechnologyAbstract This study aims to utilize secondary aluminum dross waste to synthesize Fe-Al layered double hydroxide (Fe-Al LDH) for efficient adsorption of arsenic from drinking water. The synthesis process was based on a multi-step hydrometallurgical approach, in which the aluminum content in the waste was first converted to sodium aluminate. This was followed by the transformation into Fe-Al LDH through a series of processes, including gelation, sol formation, simultaneous precipitation, and aging. A suitable crystal structure of the LDH adsorbent was successfully synthesized at a Fe: Al molar ratio of 3, a pH of 7, and an aging time of 12 h. The characterization tests revealed that the synthesized Fe-Al-LDH had an interlayer space of 7.5 Å, a specific surface area of 145 m2/g, and a pore volume of 0.57 cm3/g. The resulting Fe-Al-LDH was then used to adsorb arsenic from aqueous solutions. The results showed that the amount of arsenic adsorbed by the LDH was 0.144 mg/g at room temperature, the adsorbent dose of 0.5 g/L, pH = 7 and the initial arsenic concentration of 80 µg/L. The Fe-Al LDH reduced the amount of arsenic in the water below the standard value after a period of 40 min. In addition, the results showed that the Fe-Al LDH can stabilize arsenic species in its structure and thus prevent their re-release into the environment.https://doi.org/10.1038/s41598-025-85964-6Secondary aluminum drossLayered double hydroxideArsenicDrinking water |
| spellingShingle | Mohammad Bozorgi Mostafa Mahinroosta Ali Allahverdi Purification of arsenic-contaminated drinking water by Fe-Al-CO3 layered double hydroxide derived from secondary aluminum dross: adsorption and stabilization studies Scientific Reports Secondary aluminum dross Layered double hydroxide Arsenic Drinking water |
| title | Purification of arsenic-contaminated drinking water by Fe-Al-CO3 layered double hydroxide derived from secondary aluminum dross: adsorption and stabilization studies |
| title_full | Purification of arsenic-contaminated drinking water by Fe-Al-CO3 layered double hydroxide derived from secondary aluminum dross: adsorption and stabilization studies |
| title_fullStr | Purification of arsenic-contaminated drinking water by Fe-Al-CO3 layered double hydroxide derived from secondary aluminum dross: adsorption and stabilization studies |
| title_full_unstemmed | Purification of arsenic-contaminated drinking water by Fe-Al-CO3 layered double hydroxide derived from secondary aluminum dross: adsorption and stabilization studies |
| title_short | Purification of arsenic-contaminated drinking water by Fe-Al-CO3 layered double hydroxide derived from secondary aluminum dross: adsorption and stabilization studies |
| title_sort | purification of arsenic contaminated drinking water by fe al co3 layered double hydroxide derived from secondary aluminum dross adsorption and stabilization studies |
| topic | Secondary aluminum dross Layered double hydroxide Arsenic Drinking water |
| url | https://doi.org/10.1038/s41598-025-85964-6 |
| work_keys_str_mv | AT mohammadbozorgi purificationofarseniccontaminateddrinkingwaterbyfealco3layereddoublehydroxidederivedfromsecondaryaluminumdrossadsorptionandstabilizationstudies AT mostafamahinroosta purificationofarseniccontaminateddrinkingwaterbyfealco3layereddoublehydroxidederivedfromsecondaryaluminumdrossadsorptionandstabilizationstudies AT aliallahverdi purificationofarseniccontaminateddrinkingwaterbyfealco3layereddoublehydroxidederivedfromsecondaryaluminumdrossadsorptionandstabilizationstudies |