ELECTROLYTIC REGENERATION OF AMMONIACAL FERRICYANIDE

Electrolytic regeneration of ferricyanide from ferrocyanide containing ammonia obtained during the production of 3, 4, 5-trimethoxy benzalde hyde from the hydrazide (using the ferri/ferrocyanide redox couple), w as carried out on a laboratory scale using stainless steel electrodes and obtaining a current efficiency of 70-75% with the corresponding en ergy consumption of 0.3 kWh/kg of potassium ferricyanide. Different di aphragm materials have also been tested. Based on these results, the s cale-up of the process to 100 A was carried out.