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20250220183718.0 |
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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1080/09593330.2016.1240241
|2 doi
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|a pubmed25n0884.xml
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|a (DE-627)NLM265256488
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|a (NLM)27734760
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Zhou, Wei
|e verfasserin
|4 aut
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| 245 |
1 |
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|a The role of quinone cycle in Fe2+-H2O2 system in the regeneration of Fe2
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|c 2017
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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
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 05.01.2018
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|a Date Revised 02.12.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The reaction between Fe2+ and H2O2 generates highly reactive ·OH. However, the weak conversion from Fe3+ to Fe2+ limits its continuous reaction. Here, the difference between the Fenton system and modified Fenton system for the regeneration of Fe2+ was analyzed. A UV-vis spectrometer and redox potential measurements were used to detect Fe2+ concentration. Results indicated that Fe2+ could be better regenerated in the modified Fenton system. The regeneration of Fe2+ was facilitated by the consumption of NH2OH, while in hydroquinone (HQ)- and 1,4-bezoquinone (1,4-BQ)-modified Fenton systems, the quinone cycle could be built up and Fe3+ could be converted to Fe2+ continuously. However, results showed that HQ and 1,4-BQ reacted with ·OH, which caused a gradual decline in the enhancement effect. In order to keep Fe2+ concentration stable for a longer time, the influence of [HQ/1,4-BQ]0/[Fe2+]0 on Fe2+ concentration was carefully studied. When the mole ratio was 5:1, Fe2+ concentration remained nearly 90% of total iron at 40 min. But when the mole ratios were 0.5:1 and 0.1:1, Fe2+ concentration decreased to a very low level at 20 min. Oxidation-reduction potential (ORP) results further confirmed the role of quinone cycle
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|a Journal Article
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|a Fe2+ regeneration
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4 |
|a Fe2+–H2O2 system
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|a hydrogen peroxide
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| 650 |
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4 |
|a hydroxyl radical
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| 650 |
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4 |
|a quinone cycle
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| 650 |
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7 |
|a Hydroxyl Radical
|2 NLM
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| 650 |
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7 |
|a 3352-57-6
|2 NLM
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| 650 |
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7 |
|a Hydrogen Peroxide
|2 NLM
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| 650 |
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7 |
|a BBX060AN9V
|2 NLM
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| 650 |
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|a Iron
|2 NLM
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| 650 |
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7 |
|a E1UOL152H7
|2 NLM
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| 700 |
1 |
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|a Gao, Jihui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Haiqian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Meng, Xiaoxiao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Shaohua
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Environmental technology
|d 1998
|g 38(2017), 15 vom: 13. Aug., Seite 1887-1896
|w (DE-627)NLM098202545
|x 1479-487X
|7 nnns
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| 773 |
1 |
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|g volume:38
|g year:2017
|g number:15
|g day:13
|g month:08
|g pages:1887-1896
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|u http://dx.doi.org/10.1080/09593330.2016.1240241
|3 Volltext
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|d 38
|j 2017
|e 15
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|c 08
|h 1887-1896
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