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20240130231950.0 |
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231226s2024 xx |||||o 00| ||eng c |
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|a 10.1080/09593330.2022.2129457
|2 doi
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|a pubmed24n1275.xml
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|a (DE-627)NLM346780845
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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1 |
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|a Zhang, Yanping
|e verfasserin
|4 aut
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|a Enhanced dewaterability of sludge by Fe(II)-sludge biochar activate persulfate
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|c 2024
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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 30.01.2024
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|a Date Revised 30.01.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Sludge biochar supported Fe(II) (Fe(II)-SBC) was successfully prepared using waste activated sludge as peroxydisulfate (PDS) activator to condition sludge for deep dewatering. The experimental results showed that Fe(II)-SBC with FeO on it could effectively active PDS to produce SO4-⋅ and HO⋅. The radicals could destroy the structure of sludge cells and extracellular polymeric substance (EPS), transformed the hydrophilic and tightly bound EPS into soluble-EPS, degrade partial proteins and polysaccharides and released bound water. The negatively charged groups on sludge floc were dripped off by SO4-⋅/HO⋅ or neutralized with Fe2+, Fe3+, H+, or Fe(II)-SBC, leading to an increase in zeta potential to -2.24 mV and sludge destabilization. The residual Fe(II)-SBC served as a skeleton builder that decreased the compression coefficient of the sludge cake to 0.75. Under the combined functions, the CST and SRF were reduced by 70% and 82.7%, respectively, and Wc was reduced to 72.4%. The byproducts of Fe3+ and SO42- finally remained in sludge cake in the form of NaFeSi2O6 and CaSO4
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|a Journal Article
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|a Fe(II)-SBC
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|a persulfate
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|a skeleton builder
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|a sludge biochar
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|a sludge dewatering
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|a Sewage
|2 NLM
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|a biochar
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
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|a Ferrous Compounds
|2 NLM
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|a Charcoal
|2 NLM
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|a 16291-96-6
|2 NLM
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| 700 |
1 |
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|a Pei, Jiahua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zheng, Songchao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Yibing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lv, Ning
|e verfasserin
|4 aut
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| 700 |
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|a Ma, Liran
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Environmental technology
|d 1993
|g 45(2024), 5 vom: 15. Jan., Seite 854-866
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|x 1479-487X
|7 nnns
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|g volume:45
|g year:2024
|g number:5
|g day:15
|g month:01
|g pages:854-866
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|u http://dx.doi.org/10.1080/09593330.2022.2129457
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