Comparison of three methods for rendering plant fat transesterification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027022%3A_____%2F13%3A00000410" target="_blank" >RIV/00027022:_____/13:00000410 - 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

Comparison of three methods for rendering plant fat transesterification

Popis výsledku v původním jazyce

Three most frequently used methods for fat transesterification were compared using rendering plant fat (RPF) as model. Acid-catalyzed transesterification was found to be the most effective (conversion 90%) at optimum conditions (fat: methanol ratio 1:10,sulfuric acid amount of 2% v/v, temperature 95°C). Base-catalyzed transesterification of RPF on the other hand, results in much lower conversion (45%) at optimum conditions (fat:methanol ratio 1:20, NaOH amount 8% w/v, optimum temperature 95°C). The difference is done (among others) by the fact that RPF has high concentration of free acid (high acidity number) compared with the fats usually used for transesterification and that free acids are not esterified in alkaline media. Enzyme (lipase) catalyzedreaction could lead to partial esterification of free fatty acids, but with much lower reaction velocity. This fact leads to higher conversion in the case of enzyme-catalyzed transesterification of RPF compared with base-catalyzed reactio

Název v anglickém jazyce

Comparison of three methods for rendering plant fat transesterification

Popis výsledku anglicky

Three most frequently used methods for fat transesterification were compared using rendering plant fat (RPF) as model. Acid-catalyzed transesterification was found to be the most effective (conversion 90%) at optimum conditions (fat: methanol ratio 1:10,sulfuric acid amount of 2% v/v, temperature 95°C). Base-catalyzed transesterification of RPF on the other hand, results in much lower conversion (45%) at optimum conditions (fat:methanol ratio 1:20, NaOH amount 8% w/v, optimum temperature 95°C). The difference is done (among others) by the fact that RPF has high concentration of free acid (high acidity number) compared with the fats usually used for transesterification and that free acids are not esterified in alkaline media. Enzyme (lipase) catalyzedreaction could lead to partial esterification of free fatty acids, but with much lower reaction velocity. This fact leads to higher conversion in the case of enzyme-catalyzed transesterification of RPF compared with base-catalyzed reactio

Druh

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

CEP obor

JT - Pohon, motory a paliva

OECD FORD obor

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Projekt

<a href="/cs/project/QG60079" target="_blank" >QG60079: Výzkum výroby biopaliva z odpadních živočišných tuků</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Research in Agricultural Engineering

ISSN

1212-9151

e-ISSN

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Svazek periodika

59

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

51-55

Kód UT WoS článku

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EID výsledku v databázi Scopus

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