Contribution to Deproteination of Residual Chrome Sludge after Enzymatic Hydrolysis of Shavings with Additional Removal of Magnesium

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F02%3A63500534" target="_blank" >RIV/70883521:28110/02:63500534 - 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
Contribution to Deproteination of Residual Chrome Sludge after Enzymatic Hydrolysis of Shavings with Additional Removal of Magnesium
Original language description
Chrome-tanned leather manufacture, so-called shavings are produced which represent a considerable volume of hazardous waste. One of the ways of its processing is the chemical mode (acid, alkaline or enzymatic hydrolysis). For a number of reasons, the method most suitable is the enzymatic, where a soluble collagen hydrolyzate and solid fraction (the so-called chrome cake) are formed. The utilization of this solid waste of high chrome content requires, in the first place, reducing the content of protein fraction contaminating the material. This process was mainly realized through multiple decantation with water (or with adapted pH for removing and recycling magnesium employed in hydrolysis). This path removed about 16 % protein fraction (free protein) and approx. 11 % magnesium. The quantity of washed-out Mg increased to 80% by adaptation of pH to 6.8. A 100% washing-out of magnesium and thus its separation from chromium may be expected to take place at pH = 6, however, this optimal valu
Czech name
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Czech description
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Publication year
2002
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Technologies and Processes for Sustainab le Development and Pollution. Reduction/Prevention - book of abstracts
ISBN
80-214-2151-7
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
243-249
Publisher name
Vutium
Place of publication
Brno
Event location
Brno
Event date
Jan 14, 2002
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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