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Statements

Subject Item
n2:RIV%2F70883521%3A28110%2F02%3A63500534%21RIV%2F2003%2FMSM%2F281103%2FN
rdf:type
skos:Concept n13:Vysledek
dcterms: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 value was not attain 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 value was not attain
dcterms:title
Contribution to Deproteination of Residual Chrome Sludge after Enzymatic Hydrolysis of Shavings with Additional Removal of Magnesium Contribution to Deproteination of Residual Chrome Sludge after Enzymatic Hydrolysis of Shavings with Additional Removal of Magnesium
skos:prefLabel
Contribution to Deproteination of Residual Chrome Sludge after Enzymatic Hydrolysis of Shavings with Additional Removal of Magnesium Contribution to Deproteination of Residual Chrome Sludge after Enzymatic Hydrolysis of Shavings with Additional Removal of Magnesium
skos:notation
RIV/70883521:28110/02:63500534!RIV/2003/MSM/281103/N
n4:strany
243-249
n4:aktivita
n19:Z
n4:aktivity
Z(MSM 265200014), Z(MSM 281100002)
n4:dodaniDat
n17:2003
n4:domaciTvurceVysledku
n9:5011787 n9:9553630
n4:druhVysledku
n7:D
n4:duvernostUdaju
n15:S
n4:entitaPredkladatele
n10:predkladatel
n4:idSjednocenehoVysledku
641684
n4:idVysledku
RIV/70883521:28110/02:63500534
n4:jazykVysledku
n8:eng
n4:klicovaSlova
deproteination, wastes, chromium, magnesium, shavings, hydrolysis
n4:klicoveSlovo
n5:chromium n5:magnesium n5:hydrolysis n5:shavings n5:deproteination n5:wastes
n4:kontrolniKodProRIV
[2FEBA041BFC2]
n4:mistoKonaniAkce
Brno
n4:mistoVydani
Brno
n4:nazevZdroje
Technologies and Processes for Sustainab le Development and Pollution. Reduction/Prevention - book of abstracts
n4:obor
n20:DM
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
4
n4:pocetUcastnikuAkce
0
n4:pocetZahranicnichUcastnikuAkce
0
n4:rokUplatneniVysledku
n17:2002
n4:tvurceVysledku
Kupec, Jan Rienerová, M. Dvořáčková, Marie Prostředníková, M.
n4:typAkce
n6:EUR
n4:zahajeniAkce
2002-01-14+01:00
n4:zamer
n12:MSM%20281100002 n12:MSM%20265200014
s:numberOfPages
7
n16:hasPublisher
Vysoké učení technické v Brně. Nakladatelství VUTIUM
n18:isbn
80-214-2151-7
n21:organizacniJednotka
28110