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Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28140%2F07%3A63505903" target="_blank" >RIV/70883521:28140/07:63505903 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Potential Danger of Chromium Tanned Waste

Popis výsledku v původním jazyce

This contribution deals with the waste from the processes in which raw hide is transformed into leather, as well as with the waste generated during further leather processing and the final waste of leather industry, the worn-out shoes. All this waste, ifdeposited in the open-air dumps, represents a potential threat to human health, because it contains trivalent chromium (Cr III), which can oxidise to its hexavalent form (Cr VI) under various conditions. The authors discuss the possibilities of spontaneous transformation of Cr III into Cr VI and propose several technologies of the waste treatment to eliminate the health and environmental risks. Chrome-tanned waste, especially the chrome shavings, is processed with the use of modified enzymatic hydrolysis. The chromium cake obtained after filtration has proved to serve as a suitable precipitator of chromium ions from chromium containing spent liquor. Simultaneously, the chromium cake is enriched by those chromium ions and can be re-used

Název v anglickém jazyce

Potential Danger of Chromium Tanned Waste

Popis výsledku anglicky

This contribution deals with the waste from the processes in which raw hide is transformed into leather, as well as with the waste generated during further leather processing and the final waste of leather industry, the worn-out shoes. All this waste, ifdeposited in the open-air dumps, represents a potential threat to human health, because it contains trivalent chromium (Cr III), which can oxidise to its hexavalent form (Cr VI) under various conditions. The authors discuss the possibilities of spontaneous transformation of Cr III into Cr VI and propose several technologies of the waste treatment to eliminate the health and environmental risks. Chrome-tanned waste, especially the chrome shavings, is processed with the use of modified enzymatic hydrolysis. The chromium cake obtained after filtration has proved to serve as a suitable precipitator of chromium ions from chromium containing spent liquor. Simultaneously, the chromium cake is enriched by those chromium ions and can be re-used

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

The 5th WSEAS Conference on Heat Transfer, Thermal Engineering and Environment HTE´07

ISBN

978-960-6766-02-2

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

137-141

Název nakladatele

WSEAS World Science and Engineering Academy and Science

Místo vydání

Atény

Místo konání akce

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Datum konání akce

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Typ akce podle státní příslušnosti

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Kód UT WoS článku

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