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231225s2021 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2020.570
|2 doi
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|a pubmed24n1068.xml
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|a DE-627
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|a eng
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|a Lian, J J
|e verfasserin
|4 aut
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|a Enhanced molybdenum(VI) removal using sulfide-modified nanoscale zerovalent iron
|b kinetics and influencing factors
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 29.01.2021
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|a Date Revised 29.01.2021
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|a published: Print
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|a Citation Status MEDLINE
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|a The overall goal of this study is to investigate the effect of sulfidated nanoscale zerovalent iron (S-nZVI) on the removal of hexavalent molybdate (MoO42-) under different aquatic chemistry conditions. Surface analysis suggests that Mo(VI) is removed mainly by adsorption and co-precipitation onto the surface of S-nZVI and a small amount of Mo(VI) can be reduced to Mo(V) species. The results of batch tests show that Mo(VI) removal by S-nZVI are well described with the pseudo-second-order adsorption model. The removal rate increases with a decrease in solution pH (4.0-9.0) and is significantly affected by the S/Fe ratio of S-nZVI, with the optimal S/Fe ratio being 0.5. The presence of anions WO42- or CrO42- can reduce the Mo(VI) removal, which is likely because they compete for adsorption sites on the solid surfaces. The divalent cations Ni2+, Cu2+ and Co2+ also inhibit the removal of Mo(VI) whereas Zn2+, Ca2+ and Mg2+ enhance it. After being aged for 35 d in water, S-nZVI still exhibits high reactivity towards Mo(VI) removal (57.39%). The study demonstrates that S-nZVI can be used as an environmentally friendly material for effectively removing Mo(VI) from contaminated water
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|a Journal Article
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|a Sulfides
|2 NLM
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|a Water Pollutants, Chemical
|2 NLM
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|a Chromium
|2 NLM
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|a 0R0008Q3JB
|2 NLM
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|a Molybdenum
|2 NLM
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|a 81AH48963U
|2 NLM
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|a Iron
|2 NLM
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|a E1UOL152H7
|2 NLM
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|a Yang, M
|e verfasserin
|4 aut
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|a Wang, H L
|e verfasserin
|4 aut
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|a Zhong, Y
|e verfasserin
|4 aut
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|a Chen, B
|e verfasserin
|4 aut
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|a Huang, W L
|e verfasserin
|4 aut
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|a Peng, P A
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 83(2021), 2 vom: 30. Jan., Seite 297-308
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|x 0273-1223
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| 773 |
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|g volume:83
|g year:2021
|g number:2
|g day:30
|g month:01
|g pages:297-308
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|u http://dx.doi.org/10.2166/wst.2020.570
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