Reactor Comparison for the Esterification of Fatty Acids from Waste Cooking Oil

Esterification of the fatty acids contained in waste cooking oil with glycerol, a reaction involving immiscible and viscous reactants, was achieved in two pilot‐scale continuous pulsed reactors: the oscillatory baffled reactor and the helix reactor. In both reactors, with or without baffles, the rea...

Full description

Saved in:
Bibliographic Details
Published in:Chemical engineering & technology Vol. 38; no. 12; pp. 2161 - 2169
Main Authors: Mazubert, Alex, Crockatt, Marc, Poux, Martine, Aubin, Joelle, Roelands, Mark
Format: Journal Article
Language:English
Published: Weinheim WILEY-VCH Verlag 01.12.2015
WILEY‐VCH Verlag
Subjects:
Cooking
DBSA
Esterification
Fatty acids
Glycerols
Heating
Helix reactor
Oscillatory baffled reactor
Process intensification
Reactors
Selectivity
Waste cooking oil
Wastes
ISSN:0930-7516, 1521-4125
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Esterification of the fatty acids contained in waste cooking oil with glycerol, a reaction involving immiscible and viscous reactants, was achieved in two pilot‐scale continuous pulsed reactors: the oscillatory baffled reactor and the helix reactor. In both reactors, with or without baffles, the reaction reaches its thermodynamic equilibrium at lower temperatures, shorter residence times and with higher selectivities than those reported in the literature. This equilibrium is then shifted by an increase in the excess of glycerol, or by removing water from the reactive media by an intermediary decantation or by the use of dodecylbenzene sulfonic acid, a surfactant catalyst. Further investigations would be required to increase the conversions without decreasing the selectivities, by increasing the initial amount of free fatty acids. The esterification reaction of the fatty acids contained in waste cooking oil (40 % of free fatty acids) with glycerol was carried out by two continuous and intensified technologies: an oscillatory baffled reactor and a pulsed helix reactor. Good conversions and selectivities were obtained at lower temperatures and shorter residence times than in conventional reactors.
Bibliography:French Government
INP Toulouse
European Union
ArticleID:CEAT201500138
Réseau Franco-Néerlandais
TNO Delft
région Midi-Pyrénées
ark:/67375/WNG-LQ9X5D8C-D
istex:0F3FFF2273F70493FE5675DF79C23D36007565F6
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.201500138