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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F08%3A00006171%21RIV09-MSM-25310___
rdf:type
n16:Vysledek skos:Concept
dcterms:description
Heterogeneous reaction mixture is formed by transesterification of vegetable oils. The reaction mixture contains methyl esters of higher fatty acids and glycerol mainly. From this mixture, biodiesel is gained by spontaneous sedimentation in the gravitational field. The sedimentation can be considerably accelerated by controlled addition of water. It was found that addition of small amount of water into the crude reaction mixture affected significantly the mixture and substantial change in the speed of the separation took place. Considerable differences in the composition and quality of ester and glycerol phases occurred. Optical properties (transmittance and refractive indices) of heterogeneous reaction mixture are change after addition of water; this change can be observed spectrophotometrically. This method is applicable for all types of vegetable oils including waste frying oils. Heterogeneous reaction mixture is formed by transesterification of vegetable oils. The reaction mixture contains methyl esters of higher fatty acids and glycerol mainly. From this mixture, biodiesel is gained by spontaneous sedimentation in the gravitational field. The sedimentation can be considerably accelerated by controlled addition of water. It was found that addition of small amount of water into the crude reaction mixture affected significantly the mixture and substantial change in the speed of the separation took place. Considerable differences in the composition and quality of ester and glycerol phases occurred. Optical properties (transmittance and refractive indices) of heterogeneous reaction mixture are change after addition of water; this change can be observed spectrophotometrically. This method is applicable for all types of vegetable oils including waste frying oils. Transesterifikací rostlinných olejů vzniká heterogenní reakční směs. Reakční směs obsahuje zejména methylestery vyšších mastných kyselin a glycerolu. Z této směsi je bionafta získávána samovolnou sedimentací. Sedimentaci je možné urychlit řízeným přídavkem vody. Bylo zjištěno, že malé množství vody přidané do surové reakční směsi významně ovlivňuje rychlost separace. Byly zjištěny významné rozdíly v kvalitě a kvantitě obou fází. Přídavkem vody jsou měněny optické vlastnosti (transmitance a index lomu) heterogenní surové reakční směsi, které mohou být pozorovány spektrofotometricky. Tato metoda je vhodná pro všechny druhy rostlinných olejů včetně použitých fritovacích olejů.
dcterms:title
Usnadnění separace reakční směsi po transesterifikaci rostlinných olejů Simplification of Separation of Reaction Mixture after Transesterification of Vegetable Oil Simplification of Separation of Reaction Mixture after Transesterification of Vegetable Oil
skos:prefLabel
Simplification of Separation of Reaction Mixture after Transesterification of Vegetable Oil Simplification of Separation of Reaction Mixture after Transesterification of Vegetable Oil Usnadnění separace reakční směsi po transesterifikaci rostlinných olejů
skos:notation
RIV/00216275:25310/08:00006171!RIV09-MSM-25310___
n3:aktivita
n13:Z
n3:aktivity
Z(MSM0021627502)
n3:cisloPeriodika
4
n3:dodaniDat
n15:2009
n3:domaciTvurceVysledku
n9:1329596 n9:3956741 n9:6547478
n3:druhVysledku
n7:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n11:predkladatel
n3:idSjednocenehoVysledku
394768
n3:idVysledku
RIV/00216275:25310/08:00006171
n3:jazykVysledku
n8:eng
n3:klicovaSlova
Biodiesel; Vegetable Oil; Sedimentation; Water; Refractive Index
n3:klicoveSlovo
n4:Vegetable%20Oil n4:Water n4:Sedimentation n4:Biodiesel n4:Refractive%20Index
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[6AF1B32458EB]
n3:nazevZdroje
European Journal of Lipid Science and Technology
n3:obor
n18:CI
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n15:2008
n3:svazekPeriodika
110
n3:tvurceVysledku
Machek, Jaroslav Hájek, Martin Skopal, František
n3:zamer
n10:MSM0021627502
s:issn
1438-7697
s:numberOfPages
4
n17:organizacniJednotka
25310