Acid treatment of Chromed Leather Waste from Footwear and Garment Production

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F03%3A63501139" target="_blank" >RIV/70883521:28110/03:63501139 - 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

Acid treatment of Chromed Leather Waste from Footwear and Garment Production

Popis výsledku v původním jazyce

Chrome tanned leather waste from footwear and garment production mainly land-filled at present time representing potential environmental risks. Acid rain slowly extracts chromic tanning salts from leather waste that are accumulated in ground water, oftenused after oxidation treatment as drinking water. Chromic salts are oxidised to highly carcinogenic Cr(VI) compounds. From environmental reason any other treatment of chromed leather waste than dumping is therefore desirable. Sulphuric and ortho-phosphoric acid treatment of chromed leather waste (scraps, cut-off waste) from footwear and garment production is presented. Using methods of mathematical statistical analysis optimal conditions of the processes are estimated. After leather scraps acid decomposition process, the reaction mixture is neutralised and precipitated chromic salts are filtered out and can be reused e.g. as a pigment or in tannery industry. The use of water-soluble protein hydrolysate as agricultural fertiliser is pro

Název v anglickém jazyce

Acid treatment of Chromed Leather Waste from Footwear and Garment Production

Popis výsledku anglicky

Chrome tanned leather waste from footwear and garment production mainly land-filled at present time representing potential environmental risks. Acid rain slowly extracts chromic tanning salts from leather waste that are accumulated in ground water, oftenused after oxidation treatment as drinking water. Chromic salts are oxidised to highly carcinogenic Cr(VI) compounds. From environmental reason any other treatment of chromed leather waste than dumping is therefore desirable. Sulphuric and ortho-phosphoric acid treatment of chromed leather waste (scraps, cut-off waste) from footwear and garment production is presented. Using methods of mathematical statistical analysis optimal conditions of the processes are estimated. After leather scraps acid decomposition process, the reaction mixture is neutralised and precipitated chromic salts are filtered out and can be reused e.g. as a pigment or in tannery industry. The use of water-soluble protein hydrolysate as agricultural fertiliser is pro

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DM - Tuhý odpad a jeho kontrola, recyklace

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název periodika

Indian Chemical Engineer. [Incorporating Sections A&B]

ISSN

0019-4506

e-ISSN

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Svazek periodika

45

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

IN - Indická republika

Počet stran výsledku

5

Strana od-do

259-263

Kód UT WoS článku

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EID výsledku v databázi Scopus

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