Recovery and re-use of chromium from the waste generated by leather industry

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28140%2F10%3A63509140" target="_blank" >RIV/70883521:28140/10:63509140 - 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
Recovery and re-use of chromium from the waste generated by leather industry
Original language description
RLeather industry processes hides of slaughtered and game animals; meaning by- products of the meat industry. The main output is stabilized leather. The conversion of raw hide into leather comprises a complex series of chemical, physical-chemical and mechanical operations. Approximately 80% of leather is stabilized (tanned) by trivalent chromium (CrIII) salts. The processing of 1,000 kg of raw hide into leather results in the creation of 200 kg of leather with chromium content of 3 kg, 250 kg of non- tanned protein waste and 200 kg of tanned waste with chromium content of 3 kg. The tanning process generates up to 50,000 kg of waste water containing 5 kg of chromium. Consequently, only 20 % of collagen raw material is valorized by leather manufacturingprocesses and about 73 % of chromium ends as waste (primary leather waste). Another kind of leather waste is the so-called manipulation waste (secondary waste) generated during processing of the stabilized leather into final leather produ
Czech name
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Czech description
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Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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