Changes in availability of Ca, K, Mg, P and S in sewage sludge as affected by pyrolysis temperature

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F20%3A81899" target="_blank" >RIV/60460709:41210/20:81899 - isvavai.cz</a>
Result on the web
<a href="https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwjmnsyA0pvuAhXTCRAIHfpLAZsQFjACegQIAhAC&url=https%3A%2F%2Fwww.agriculturejournals.cz%2FpublicFiles%2F605_2019-PSE.pdf&usg=AOvVaw3hIhKqmkHrN2t790Enbci9" target="_blank" >https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwjmnsyA0pvuAhXTCRAIHfpLAZsQFjACegQIAhAC&url=https%3A%2F%2Fwww.agriculturejournals.cz%2FpublicFiles%2F605_2019-PSE.pdf&usg=AOvVaw3hIhKqmkHrN2t790Enbci9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17221/605/2019-PSE" target="_blank" >10.17221/605/2019-PSE</a>

Result language
angličtina
Original language name
Changes in availability of Ca, K, Mg, P and S in sewage sludge as affected by pyrolysis temperature
Original language description
In this study, anaerobically stabilised SS was pyrolysed in a laboratory fixed-bed reactor at 220, 320, 420, 520, and 620 C for 30 min in the N2 atmosphere. Pyrolysis resulted in a higher total content of all studied nutrients in BCs. Aromaticity and hydrophobicity of BCs increased with increasing temperatures while solubility decreased. Relative availability (% from total content) of nutrients in BCs decreased in order: Ca - Mg, K - S - P. Pyrolysis at 220 C produced acidic BC with a higher content of acetic acid-extractable nutrients compared to non-pyrolysed control. An increment in pH and a significant drop in the content of available Ca, Mg, K and S were found at temperature 320 C. Pyrolysis at 320 C increased the content of available P by 28 % compared to non-pyrolysed SS. At the temperature of 420 C and higher, available contents of all studied nutrients were lower than in non-pyrolysed SS.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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