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231226s2022 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2022.134
|2 doi
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|a pubmed25n1138.xml
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|a (DE-627)NLM341610275
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|a (NLM)35638796
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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 Liu, Hui
|e verfasserin
|4 aut
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1 |
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|a Degradation of methyl orange by pyrite activated persulfate oxidation
|b mechanism, pathway and influences of water substrates
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|c 2022
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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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|a Date Completed 02.06.2022
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|a Date Revised 02.06.2022
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|a published: Print
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|a Citation Status MEDLINE
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|a Degradation mechanism of methyl orange (MO), a typical azo dye, with pyrite (FeS2) activated persulfate (PS) was explored. The results showed that when the initial concentration of MO was 0.1 mM, FeS2 was 1.6 g/L and PS was 1.0 mM, the removal rate of MO could reach 92.9% in 150 min, and the removal rate of total organic carbon could reach 14.1%. In addition, both pH ≤ 2 and pH ≥ 10 could have an inhibitory effect in the FeS2/PS system. Furthermore, Cl- and low concentrations of HCO-3 had little effect on the degradation of MO with FeS2/PS. However, H2PO-4 and high concentrations of HCO-3 could inhibit the degradation of MO in the system. Besides, MO in river water and tap water were not degraded in FeS2/PS system, but acidification (pH = 4) would greatly promote the degradation. In addition, the removal rate of MO with FeS2/PS could still reach about 90% after five cycles of FeS2. Furthermore, the intermediates and possible degradation pathways were speculated by LC-MS, and the degradation mechanism of MO by FeS2/PS was that the cycle of Fe(III)/Fe(II) could continuously activate persulfate to produce SO4•-. The results could provide technical support for azo dye degradation in the FeS2/PS system
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|a Journal Article
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|a Azo Compounds
|2 NLM
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|a Ferric Compounds
|2 NLM
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|a Sulfates
|2 NLM
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|a Sulfides
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a pyrite
|2 NLM
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|a 132N09W4PR
|2 NLM
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|a methyl orange
|2 NLM
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|a 6B4TC34456
|2 NLM
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|a Iron
|2 NLM
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|a E1UOL152H7
|2 NLM
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| 700 |
1 |
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|a Liu, Fenwu
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Jian
|e verfasserin
|4 aut
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| 700 |
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|a Zhou, Jiaxing
|e verfasserin
|4 aut
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| 700 |
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|a Bi, Wenlong
|e verfasserin
|4 aut
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|a Qin, Junmei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hou, Qingjie
|e verfasserin
|4 aut
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|a Ni, Yue
|e verfasserin
|4 aut
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|a Xu, Shaozu
|e verfasserin
|4 aut
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| 700 |
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|a Yang, Chen
|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 85(2022), 10 vom: 29. Mai, Seite 2912-2927
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnas
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| 773 |
1 |
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|g volume:85
|g year:2022
|g number:10
|g day:29
|g month:05
|g pages:2912-2927
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|u http://dx.doi.org/10.2166/wst.2022.134
|3 Volltext
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|d 85
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