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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2019.04.045
|2 doi
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|a pubmed25n0990.xml
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|a (DE-627)NLM297074423
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|a (NLM)31088676
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|a (PII)S0956-053X(19)30258-2
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Meng, Xiangdong
|e verfasserin
|4 aut
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|a Recovery of phosphate as struvite from low-temperature combustion sewage sludge ash (LTCA) by cation exchange
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|c 2019
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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 12.09.2019
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|a Date Revised 12.09.2019
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2019 Elsevier Ltd. All rights reserved.
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|a As a phosphorus-rich material, low-temperature combustion sewage sludge ash (LTCA) contains over 9 wt% content of phosphorus (P) and a large proportion of impurities, especially the content of Fe arrives at 14.59 wt%. To fully utilize LTCA as a fertilizer, this study investigated a procedure for P recovery from LTCA via struvite crystallization with fewer impurities. The adsorption characteristics of P and Fe by cation exchange resin (CER) were explored by simulating using the macroscopic parametric equation Thomas model. Optimum purification conditions for P-rich leachate by cation exchange column method were determined. Results showed that approximately 97.21 wt% of P was extracted from LTCA at HCl concentration of 0.8 M and liquid/solid ratio of 20.0 ml/g. More than 90 wt% of impurities could be detached by making P-rich leachate flow through cation exchange bed filled by CER at 300 ml/h. The macroscopic parametric equation Thomas model could clearly describe the adsorption characteristics of Fe in P-rich leachate by CER. Theoretical basis for purification of high concentration Fe in P-rich leachate by CER was provided. Approximately 84.04 wt% of total P in LTCA was recovered as struvite crystal which had low concentrations of heavy metals (5.96 mg/kg for Cr, 45.21 mg/kg for Cu, 29.67 mg/kg for Ni, 2.24 mg/kg for Pb, and 290.6 mg/kg for Zn) and could be eco-friendly for agricultural application. X-ray diffraction and SEM-EDS analysis validated the formation of struvite
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|a Journal Article
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|a Cation exchange bed
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|a Low-temperature combustion sludge ash
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|a Macroscopic parametric equation Thomas model
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|a Phosphorus recovery
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|a Struvite
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|a Cations
|2 NLM
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|a Phosphates
|2 NLM
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|a Sewage
|2 NLM
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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 Struvite
|2 NLM
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| 650 |
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|a AW3EJL1462
|2 NLM
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| 700 |
1 |
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|a Liu, Xiaoji
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huang, Qunxing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gao, Huaping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tay, Kangrou
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yan, Jianhua
|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 90(2019) vom: 01. Mai, Seite 84-93
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnas
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| 773 |
1 |
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|g volume:90
|g year:2019
|g day:01
|g month:05
|g pages:84-93
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| 856 |
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|u http://dx.doi.org/10.1016/j.wasman.2019.04.045
|3 Volltext
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