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231224s2011 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2011.392
|2 doi
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|a pubmed24n0692.xml
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|a (NLM)21508554
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|a DE-627
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|c DE-627
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|a eng
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|a Le, C
|e verfasserin
|4 aut
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|a Effects of common dissolved anions on the reduction of para-chloronitrobenzene by zero-valent iron in groundwater
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 14.07.2011
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a Batch tests were conducted to evaluate the influences of several common dissolved anions in groundwater on the reduction of para-chloronitrobenzene (p-CNB) by zero-valent iron (ZVI). The results showed that p-CNB reduction was enhanced by both Cl(-) and SO(4)(2-). HCO(3)(-) could either improve or inhibit p-CNB reduction, depending on whether the mixing speed was intense enough to rapidly eliminate Fe-carbonate complex deposited on ZVI surface. Above a concentration of 100 mg L(-1), NO(3)(-) increased the p-CNB reduction rate. The reduction rate by ClO(4)(-) decreased because the ClO(4)(-) competed with p-CNB for electrons. The p-CNB reduction was inhibited by PO(4)(3-), SiO(3)(2-) and humic acid, in the order humic acid < PO(4)(3-) < SiO(3)(2-), since these ions could form inner-sphere complexes on iron surface. The reaction even ceased when the ion concentrations were greater than 4, 0.5, and 30 mg L(-1), respectively. The results indicated that common dissolved anions in groundwater should be taken into account when ZVI is applied for contaminated groundwater remediation
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Anions
|2 NLM
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|a Humic Substances
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|a Nitrobenzenes
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|a 4-chloronitrobenzene
|2 NLM
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|a CVL66U249D
|2 NLM
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|a Iron
|2 NLM
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|2 NLM
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|a Wu, J H
|e verfasserin
|4 aut
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|a Deng, S B
|e verfasserin
|4 aut
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|a Li, P
|e verfasserin
|4 aut
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|a Wang, X D
|e verfasserin
|4 aut
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|a Zhu, N W
|e verfasserin
|4 aut
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|a Wu, P X
|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 63(2011), 7 vom: 17., Seite 1485-90
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnns
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| 773 |
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|g volume:63
|g year:2011
|g number:7
|g day:17
|g pages:1485-90
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|u http://dx.doi.org/10.2166/wst.2011.392
|3 Volltext
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