Processing of Egyptian boiler-ash for extraction of vanadium and nickel.
Proposed technique in this investigation is given for vanadium and nickel enrichment in the Egyptian boiler ash. Among the various concepts for recovery of vanadium and nickel from boiler ash, the pyro-metallurgical approach is technically feasible, but is not cost-effective from an operational economy standpoint. Another technically viable process which, however, needs further development and presented in this investigation, is the hydrometallurgical processing that involves acid leaching under oxygen pressure of ground ash, followed by electrolytic separation of nickel from sulphate solution and vanadium is then neutralized and precipitated by adjustment the pH value and calcined to produce V2O5.
Amer
A M
AM
Department of Environmental Sciences, Faculty of Science, Alexandria University, Egypt. ashraf.amer@37.com
D011232:Chemical Precipitation; D006863:Hydrogen-Ion Concentration; D017745:Incineration; D009532:Nickel / Q000032:analysis*; D010100:Oxygen; D012037:Refuse Disposal; D014639:Vanadium / Q000032:analysis*
D014639:Vanadium; D009532:Nickel; D010100:Oxygen