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Processing of Chrome Sludge Remained after Enzymatic Hydrolysis of Chrome Waste

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F06%3A63504606" target="_blank" >RIV/70883521:28110/06:63504606 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Processing of Chrome Sludge Remained after Enzymatic Hydrolysis of Chrome Waste

  • Original language description

    Enzymatic hydrolysis of chrome-tanned leather waste resolves the problem of processing solid wastes of the tanning and shoemaking industries. End products of enzymatic hydrolysis of a chrome cross-linked protein matrix are protein hydrolysate which is constantly finding new fields of application, and residual chrome sludge whose use is the subject of discussions. Its possible application in pigment manufacture is open due to quite high chromium content. On the other hand, requirements for its quality are such that direct employment in technologies of pigment manufacture is not possible without previous treatment. A particularly problematic issue is content of MgO which is used as promotor in enzymatic hydrolysis of chrome-tanned wastes. The presented work deals with possible isolation of magnesium from chrome sludge applying the method of 3-stage elution with water and adjusting pH, in which efficiency of up to 84% was reached.

  • Czech name

    Zpracování chromitého koláče zbylého po enzymové hydrolyse chromočiněného odpadu

  • Czech description

    Enzymovou hydrolysou se řeší problém chromočiněných odpadů. Konečnými produkty hydrolýsy jsou kolagenní hydrolysát a zbylý chromitý koláč, jehož použití je předmětem této práce. Jeho využití pro výrobu pigmentů je otevřenou otázkou, vzhledem k docela vysokému obsahu chrómu. Nicméně, požadavky na kvalitu pigmentů vyžadují čištění tohoto produktu od nežádoucích příměsí. Problematickým kontaminantem je MgO, který byl použit jako katalysátor enzymové hydrolýsy. Práce popisuje metodu 3-fázového vymývání hořčíku v kyselém prostředí s účinností až 85%.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CI - Industrial chemistry and chemical engineering

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2006

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Leather Science and Engineering

  • ISSN

    1004-7964

  • e-ISSN

  • Volume of the periodical

    16

  • Issue of the periodical within the volume

    6

  • Country of publishing house

    CN - CHINA

  • Number of pages

    6

  • Pages from-to

    3-8

  • UT code for WoS article

  • EID of the result in the Scopus database