Improvement and modelling of hexenal transfer in liquid-gas reactor.
The aim of the present work is to improve the extraction of an aromatic compound, 2E-hexenal, from a continuous liquid-gas reactor. Having an improved process to recover hexenal could be of interest to obtain this chemical if produced by any biotechnological process. The experimental program proposed on the basis of a full 23 factorial design demonstrated that the conditions optima for the extraction are 40 degrees C as a reactor temperature and -10 degrees C as a temperature of trap for a nitrogen flow of 45 mL s-1. These conditions allowed to recover more than 75% of hexenal, when this compound was stripping by a nitrogen stream from the liquid phase. The mass transfer was theoretically and experimentally studied. The model predictions were validated against experimental results obtained for a reactor, and good correlation was observed for a simulation.
Enzyme Engineering Group, Biocatalysis and Bioprocess Unit, National Institute of Applied Science and Technology (INSAT), Tunis Cedex, 1080, Tunisia. benakachanajla@yahoo.fr
Najla
N
Ben Akacha
Om Elkhir
OE
Guizani
Mohamed
M
Gargouri
D000447:Aldehydes / Q000737:chemistry / Q000302:isolation & purification*; D005740:Gases / Q000737:chemistry*; D007700:Kinetics; D008956:Models, Chemical; D009584:Nitrogen / Q000737:chemistry; D013696:Temperature
D000447:Aldehydes; D005740:Gases; C010463:n-hexanal; D009584:Nitrogen