Comparison of three methods for rendering plant fat

Kód výsledku v IS VaVaI

RIV/60460709:41310/13:60602 - isvavai.cz

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

čeština

Název v původním jazyce

Comparison of three methods for rendering plant fat

Popis výsledku v původním jazyce

Th ree most frequently used methods for fat transesterifi cation were compared using rendering plant fat (RPF) as model. Acid-catalysed transesterifi cation was found to be the most eff ective (conversion 90%) at optimum conditions (fat: methanol ratio 1:10, sulphuric acid amount of 2% v/v, temperature 95°C). Base-catalysed transesterifi cation 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). Th e diff erence 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 transesterifi cation and that free acids are not esterifi ed in alkaline media. Enzyme-(lipase)catalysed reaction could lead to partial esterifi cation of free fatty acids, but with much lower reaction velocity. Th is fact leads to higher conversion in the case of enzyme-catalysed transesterifi cation of RPF compared with base-cata

Název v anglickém jazyce

Comparison of three methods for rendering plant fat

Popis výsledku anglicky

Th ree most frequently used methods for fat transesterifi cation were compared using rendering plant fat (RPF) as model. Acid-catalysed transesterifi cation was found to be the most eff ective (conversion 90%) at optimum conditions (fat: methanol ratio 1:10, sulphuric acid amount of 2% v/v, temperature 95°C). Base-catalysed transesterifi cation 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). Th e diff erence 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 transesterifi cation and that free acids are not esterifi ed in alkaline media. Enzyme-(lipase)catalysed reaction could lead to partial esterifi cation of free fatty acids, but with much lower reaction velocity. Th is fact leads to higher conversion in the case of enzyme-catalysed transesterifi cation of RPF compared with base-cata

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

QG60079: Výzkum výroby biopaliva z odpadních živočišných tuků

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 (Zemědělská technika)

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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