Produce of Low Trans Fatty Acids Soybean Oil by Electrochemical Hydrogenation in a Diaphragm Reactor
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
The proton transfer membrane electrochemical hydrogenation reaction system was designed for soybean oil to hydrogenate under moderate processing temperature, atmospheric pressure and low current density. The formate ion was regenerated at the cathode and acted as a mediator during the hydrogenation process. The effect of various processing parameters such as temperature, agitation speed, the amount of EDDAB and the oil-water ratio on the fatty acid profile, iodine value, trans fatty acid content, the specific trans isomerization index and hydrogenation selectivity were investigated. The optimum technological parameters of hydrogenation were as follows: the reaction temperature 60 ℃, speed of agitation 850 r/min, the content of EDDAB 3 g in 100 g soybean oil and the oil-water ratio 0.3 g/g. Under the optimal technical conditions, the hydrogenated soybean oil was obtained, which contained 13.3% TFAs, IV of 82.73 g I2/100 g oil, AV of 0.15 mg KOH/g oil and PV of 0.070 g/100 g oil. Compared to the traditional hydrogenation process, the application of the diaphragm electrochemical hydrogenation technique resulted in up to 71% reduction in trans fatty acid when the same level of hydrogenation was accomplished.
