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240108s2024 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2023.12.044
|2 doi
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|a pubmed24n1261.xml
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|a (DE-627)NLM366667386
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|a (NLM)38176124
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|a (PII)S0956-053X(23)00781-X
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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 Li, Ting
|e verfasserin
|4 aut
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|a Enhanced dewatering extent of sludge by Fe3O4-driven heterogeneous Fenton
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|c 2024
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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
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|2 rdacarrier
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|a Date Completed 16.01.2024
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|a Date Revised 16.01.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2023 Elsevier Ltd. All rights reserved.
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|a Homogeneous Fenton (Fe2+/H2O2) serves as a high-efficiency conditioning method for sludge dewatering due to the generation of strong oxidizing hydroxyl radicals (OH). However, high dose of ferric salts produces iron-rich dewatered sludge and decrease sludge organic matters, which will not be conducive to the subsequent disposal and reutilization. Considering advantages of Fe3O4 as heterogeneous Fenton catalyst, Fe3O4-activated H2O2 (Fe3O4 + H2O2) in this study was adopted to improve sludge deep-dewatering. Reduction efficiency of the bound water (71.3 %) after Fe3O4 + H2O2 treatment (after a reaction time of 30 min) were much higher than those in the Fe2++H2O2 treatment. Especially, the moisture content of treated sludge cake by Fe3O4 + H2O2 remarkably decreased from 86.4 % to 61.3 %. Improvement mechanism of sludge dewatering after Fe3O4 + H2O2 treatment mainly included electrostatic neutralization, reactive radical oxidation, and skeleton building by analysis of contribution factors. The generation of H+ in acidification could neutralize the negatively charged compounds to promote sludge hydrophobicity. Meanwhile reactive radicals generated from Fe3O4 + H2O2 destroyed sludge extracellular polymeric substances and cell structure to release intracellular water. Furthermore, Fe3O4 as a skeleton builder could reconstruct destructive sludge flocs and form new dewatering channels. Finally, low Fe leaching content and recoverability of Fe3O4 effectively will decrease environmental implication
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|a Journal Article
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|a Fe(3)O(4)
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|a Heterogeneous Fenton
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|a Improvement mechanism
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|a Sludge dewatering
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|a Sewage
|2 NLM
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|a Hydrogen Peroxide
|2 NLM
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|a BBX060AN9V
|2 NLM
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|a Iron
|2 NLM
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|a E1UOL152H7
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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| 700 |
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|a Zhang, Xin
|e verfasserin
|4 aut
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|a Zhou, Yujun
|e verfasserin
|4 aut
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|a Yang, Jiawei
|e verfasserin
|4 aut
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|a Cheng, Fange
|e verfasserin
|4 aut
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|a Fang, Di
|e verfasserin
|4 aut
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|a Liang, Jianru
|e verfasserin
|4 aut
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|a Li, Jiansheng
|e verfasserin
|4 aut
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|a Zhou, Lixiang
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 174(2024) vom: 15. Jan., Seite 666-673
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
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|g volume:174
|g year:2024
|g day:15
|g month:01
|g pages:666-673
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|u http://dx.doi.org/10.1016/j.wasman.2023.12.044
|3 Volltext
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