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240416s2024 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2024.080
|2 doi
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|a pubmed24n1378.xml
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|a (DE-627)NLM37109223X
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|a (NLM)38619894
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|a DE-627
|b ger
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|e rakwb
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|a eng
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|a Yang, Yahong
|e verfasserin
|4 aut
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|a Response surface optimization of sludge dewatering process
|b synergistic enhancement by ultrasonic, chitosan and sludge-based biochar
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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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|a Date Completed 17.04.2024
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|a Date Revised 17.04.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2024 The Authors This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits copying, adaptation and redistribution, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/).
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|a Due to the colloidal stability, the high compressibility and the high hydration of extracellular polymeric substances (EPS), it is difficult to efficiently dehydrate sludge. In order to enhance sludge dewatering, the process of ultrasonic (US) cracking, chitosan (CTS) re-flocculation and sludge-based biochar (SBB) skeleton adsorption of water-holding substances to regulate sludge dewaterability was proposed. Based on the response surface method, the prediction model of the specific resistance to filtration (SRF) and sludge cake moisture content (MC) was established. The US cracking time and the dosage of CTS and SBB were optimized. The results showed that the optimal parameters of the three were 5.08 s, 10.1 mg/g dry solids (DS) and 0.477 g/g DS, respectively. Meantime, the SRF and MC were 5.4125 × 1011 m/kg and 76.8123%, which significantly improved the sludge dewaterability. According to the variance analysis, it is found that the fitting degree of SRF and MC model is good, which also confirms that there is significant interaction and synergy between US, CTS and SBB, and the contribution of CTS and SBB is greater. Moreover, the process significantly improves the sludge's calorific value and makes its combustion more durable
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|a Journal Article
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|a calorific value
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|a response surface method (RSM)
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|a sludge dewaterability
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|a sludge-based biochar
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|a thermogravimetric analysis
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|a Sewage
|2 NLM
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|a biochar
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|a Chitosan
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|a 9012-76-4
|2 NLM
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|a Charcoal
|2 NLM
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|a 16291-96-6
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|a Water
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|a 059QF0KO0R
|2 NLM
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|a Yang, Xingfeng
|e verfasserin
|4 aut
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|a Chen, Yirong
|e verfasserin
|4 aut
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|a Li, Xiaowei
|e verfasserin
|4 aut
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|a Yang, Qiyong
|e verfasserin
|4 aut
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|a Li, Yangying
|e verfasserin
|4 aut
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|a Ma, Pengjing
|e verfasserin
|4 aut
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|a Zhang, Huining
|e verfasserin
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|a Xu, Shenghui
|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 89(2024), 7 vom: 15. Apr., Seite 1630-1646
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnns
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| 773 |
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|g volume:89
|g year:2024
|g number:7
|g day:15
|g month:04
|g pages:1630-1646
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|u http://dx.doi.org/10.2166/wst.2024.080
|3 Volltext
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