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241003s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.4c02741
|2 doi
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|a pubmed24n1568.xml
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|a (NLM)39358310
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Gan, Siyu
|e verfasserin
|4 aut
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|a Enhanced Treatment of Antimony Mine Wastewater by Sulfidated Micro Zerovalent Iron (S-mZVI)
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|c 2024
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|a Text
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 15.10.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Commercial micron zerovalent iron (mZVI) and sulfur were used to prepare sulfidated micro zerovalent iron (S-mZVI) through ball milling. The corrosion potentials of mZVI and S-mZVI were -0.01 and -0.37 V, respectively, indicating S-mZVI possessed a stronger electron-donating ability. The practical antimony mine wastewater (C0(Sb(V)) = 3.8296 mg/L, pH = 8.29) was treated. If meeting the national discharge standard of 5 μg/L, 2.0 g/L mZVI and 1.6 g/L S-mZVI were required within 120 min. Passing N2 or reducing wastewater pH enhanced the treatment of Sb(V) by S-mZVI, in which the wastewater acidification was more effective. Once the wastewater pH was adjusted to 3.00, only 0.7 g/L S-mZVI and 40 min long time were needed to achieve the emission below 5 μg/L. Even S-mZVI underwent four cycles, and the final concentration of Sb(V) was as low as 4.67 μg/L. As the pHzpc value was 4.09 and the corrosion potential was -0.56 V at pH 3.0, the electron-donating ability of S-mZVI as well as the electrostatic attraction between the surface of S-mZVI and Sb(V) increased. Sulfidation of mZVI and then application under the acid condition significantly improved the treatment efficiency of Sb(V)
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|a Journal Article
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1 |
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|a Wang, Zhenxing
|e verfasserin
|4 aut
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| 700 |
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|a Zheng, Chunli
|e verfasserin
|4 aut
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| 700 |
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|a Lin, Zishen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, Ai-Bin
|e verfasserin
|4 aut
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| 700 |
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|a Lai, Bo
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1999
|g 40(2024), 41 vom: 15. Okt., Seite 21701-21710
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:40
|g year:2024
|g number:41
|g day:15
|g month:10
|g pages:21701-21710
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|u http://dx.doi.org/10.1021/acs.langmuir.4c02741
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