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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2017.02.019
|2 doi
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|a pubmed25n0897.xml
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|a (DE-627)NLM269341137
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|a (NLM)28242174
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|a (PII)S0956-053X(17)30096-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 Steckenmesser, Daniel
|e verfasserin
|4 aut
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|a Effect of various types of thermochemical processing of sewage sludges on phosphorus speciation, solubility, and fertilization performance
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|c 2017
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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 02.08.2017
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|a Date Revised 02.08.2017
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2017 Elsevier Ltd. All rights reserved.
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|a Sewage sludge has one of the highest phosphorus (P) recovery potentials of all waste materials. Therefore, P-recycling from sewage sludge could contribute to closing the P-cycle. Recently, various thermal processes for P-recovery have been developed, but there is still a demand for information on the effect of different process parameters (e.g. additives and temperature) on P-speciation and especially on the fertilization performance. In the present study, two common methods (low-temperature conversion at 400-500°C and thermochemical treatment at 950°C) were investigated and combined to produce highly bioavailable P-fertilizers from two different types of sewage sludge based on chemical phosphorus precipitation (Chem-P) and enhanced biological phosphorus removal (Bio-P). The results of P-fractionation, X-ray diffraction analysis, and pot experiments with maize showed that Bio-P sludges attain high P-plant-availability after treatment at low temperatures (400°C). In contrast, Chem-P sludges can adequately be treated at higher temperatures under reductive conditions with sodium additives to form highly bioavailable calcium-sodium-phosphate. Additionally, also highly heavy-metal contaminated sludges can be thermochemically treated at high temperatures to achieve the legal requirements for fertilizers
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|a Journal Article
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|a Low-temperature-conversion
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|a P-fractionation
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4 |
|a P-plant-availability
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4 |
|a P-recovery
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|a Sewage sludge
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|a Thermochemical treatment
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|a Fertilizers
|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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7 |
|a 27YLU75U4W
|2 NLM
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| 700 |
1 |
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|a Vogel, Christian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Adam, Christian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Steffens, Diedrich
|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 62(2017) vom: 01. Apr., Seite 194-203
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
1 |
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|g volume:62
|g year:2017
|g day:01
|g month:04
|g pages:194-203
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|u http://dx.doi.org/10.1016/j.wasman.2017.02.019
|3 Volltext
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|d 62
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|h 194-203
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