New Possibilities in Production of Biodegradable Polymers Utilising Dechromated Leather Wastes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F03%3A63501402" target="_blank" >RIV/70883521:28110/03:63501402 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

New Possibilities in Production of Biodegradable Polymers Utilising Dechromated Leather Wastes

Popis výsledku v původním jazyce

The contribution presents potential utilisation of pre-treated chrome-tanned wastes as readily biodegradable components for preparing biodegradable plastics. Mixed films were prepared from PVA modified with collagen hydrolysate and added glycerol for improving processing properties, with particular components present in various percentage ranges of 60-70% mass PVA, 13-20% mass collagen hydrolysate and 11-22% mass glycerol. Biodegradability of mixed films was tested under aerobic conditions employing amethod for manometric determination of oxygen consumption in a respirometer. Assessment of biodegradability employed a mixed microbial culture in the form of unadapted and PVA-adapted activated sludge from municipal wastewater treatment plant. Pure PVA isdegraded with a current unadapted wastewater-treatment culture during a period of approx. 17 days with an approx. 12-day lag phase. With mixed films, however, a 2- to 3-stage degradation course occurs where the components broken down firs

Název v anglickém jazyce

New Possibilities in Production of Biodegradable Polymers Utilising Dechromated Leather Wastes

Popis výsledku anglicky

The contribution presents potential utilisation of pre-treated chrome-tanned wastes as readily biodegradable components for preparing biodegradable plastics. Mixed films were prepared from PVA modified with collagen hydrolysate and added glycerol for improving processing properties, with particular components present in various percentage ranges of 60-70% mass PVA, 13-20% mass collagen hydrolysate and 11-22% mass glycerol. Biodegradability of mixed films was tested under aerobic conditions employing amethod for manometric determination of oxygen consumption in a respirometer. Assessment of biodegradability employed a mixed microbial culture in the form of unadapted and PVA-adapted activated sludge from municipal wastewater treatment plant. Pure PVA isdegraded with a current unadapted wastewater-treatment culture during a period of approx. 17 days with an approx. 12-day lag phase. With mixed films, however, a 2- to 3-stage degradation course occurs where the components broken down firs

Druh

D - Stať ve sborníku

CEP obor

DM - Tuhý odpad a jeho kontrola, recyklace

OECD FORD obor

—

Projekt

—

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 statě ve sborníku

4th European Congress of Chemical Engineering - Topic 4 Abstracts

ISBN

84-88233-26-4

ISSN

—

e-ISSN

—

Počet stran výsledku

2

Strana od-do

1-2

Název nakladatele

Event of the European Federation of Chemical Engineering

Místo vydání

Granada

Místo konání akce

Granada

Datum konání akce

21. 9. 2003

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—