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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2022.12.007
|2 doi
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|a pubmed24n1167.xml
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|a (DE-627)NLM35028556X
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|a (NLM)36516581
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|a (PII)S0956-053X(22)00595-5
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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 |
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|a Su, Long
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Improvement of fungal extraction of phosphorus from sewage sludge ash by Aspergillus niger using sludge filtrate as nutrient substrate
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|c 2023
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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 18.01.2023
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|a Date Revised 18.01.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2022 Elsevier Ltd. All rights reserved.
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|a Fungal extraction is a promising approach for reclaiming phosphorus (P) from sewage sludge ash (SSA). However, this approach faces notable technical and economic challenges, including an unknown P speciation evolution and the addition of expensive chemical organic carbon. In this study, the use of an organic-rich effluent produced in sludge dewatering as nutrient source is proposed to initiate the fungal extraction of SSA-borne P with Aspergillus niger. The changes in P speciation in the ash during fungal treatment was analyzed by combined sequential extraction, solid-state 31P nuclear magnetic resonance, and P X-ray absorption near edge spectroscopy. Results showed that after 5 days of fungal treatment using sludge-derived organics, 85 % of P was leached from SSA. Dominantly, this considerable release of P resulted from the dissolution of Ca3(PO4)2, AlPO4, FePO4, and Mg3(PO4)2 in the ash, and their individual contribution rates to P released accounted for 28.0 %, 24.3 %, 20.6 %, and 18.8 %, respectively. After removal of metal cations (e.g., Mg2+, Al3+, Fe3+, and heavy metals) by cation exchange resin (CER), a hydroxyapatite (HAP) product with a purity of > 85 % was harvested from the extract by precipitation with CaCl2. By contrast, without CER purification, a crude product of Ca/Mg-carbonates and phosphates mixture were obtained from this extract. A total of 73.2 wt% of P was ultimately recovered from SSA through integrated fungal extraction, CER purification, and HAP crystallization. These findings provide a mechanistic basis for the development of waste management strategies for improved P reclamation with minimal chemical organics consumption
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|a Journal Article
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|a Aspergillus niger
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|a Fungal extraction
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|a Phosphorus reclamation
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|a Sewage sludge ash
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|a Sludge filtrate
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| 650 |
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|a Phosphorus
|2 NLM
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| 650 |
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|a 27YLU75U4W
|2 NLM
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| 650 |
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|a Sewage
|2 NLM
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| 650 |
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|a Phosphates
|2 NLM
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| 650 |
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7 |
|a Plant Extracts
|2 NLM
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| 700 |
1 |
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|a Hu, Lingyu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sui, Qinghong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ding, Chengcheng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fang, Di
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Lixiang
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 157(2023) vom: 15. Feb., Seite 25-35
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
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|g volume:157
|g year:2023
|g day:15
|g month:02
|g pages:25-35
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|u http://dx.doi.org/10.1016/j.wasman.2022.12.007
|3 Volltext
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