All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Abstract

Selective Leaching of Vanadium from Boiler Oiled Ash Residue Using Sodium Carbonate-Bicarbonate Binary Solution

Author(s): El-Sayed A Manaa

The present work aims to optimize an efficient, economic and environmental hydrothermal method to leach vanadium from boiler ash residue using sodium carbonate and bicarbonate mixture solution. For this purpose, many factors include liquid/solid phase ratio, leaching temperature, leaching time, oxidant addition and it’s percent and ash fineness are studied and optimized. From the obtained results, it is concluded that, maximum vanadium leaching (84.3%) is achieved from grinded ash (74 μm) using carbonate-bicarbonate binary solution at liquid/ash ratio of 20/1 in the presence of KMnO4 as oxidant. The obtained leach liquor is then subjected to pH readjusted at 5-6. This is followed by ammonium chloride (NH4Cl) addition under heating (40°C) and stirring to selective precipitation the leached vanadium species as ammonium meta-metavanadate (NH4VO3). The precipitate is dried at 100°C and then roasted at 750°C to obtain V2O5 oxide.


Share this       
izmir escort izmir escort bursa escort antalya escort izmir escort porno porno izle türk porno eskişehir escort bartın escort burdur escort havalandırma izmir escort bursa escort porno indir izle escort izmir