Ecological NPK fertilizer from chrome tanned wastes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26520%2F99%3A63300072" target="_blank" >RIV/00216305:26520/99:63300072 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Ecological NPK fertilizer from chrome tanned wastes
Original language description
Potential hazardous wastes, blue shavings, are made into combined organic nitrogen fertilizer with two steps. The first step takes place during high pH (11 - 12) and hydrolyzation is implemented with potassium alkali, in the second the pH is lowered to 9with phosphoric acid after enzymatic dechroming occurs. After filtration and concentration by evaporation of excess water NPK (nitrogen phosphor potassium) fertilizer is produced. The material balance equations are presented. Application of chemical technique is conducted and economic optimization occurs. The results from the presented technique show that it is not only possible to liquidate potential hazardous wastes but to also produce top quality NPK fertilizer which makes the proposed technology economically interesting.
Czech name
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Czech description
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Project
<a href="/en/project/GA104%2F98%2F0040" target="_blank" >GA104/98/0040: Research for application hydrolysed products from wastes of leather industry</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
1999
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
R`99, Recovery, Recycling, Re-integration Congress Proceedings
ISBN
3-905555-19-0
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
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Publisher name
EMPA 1999
Place of publication
Ženeva
Event location
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Event date
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Type of event by nationality
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UT code for WoS article
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