The recovery of vanadium from ash obtained during the combustion of fuel oil at thermal power stations

Bioleaching of V, Ni, and Cu from residual produced in oil fired furnaces using Acidithiobacillus ferrooxidans

“…High grade ash is produced directly inside the furnace and the low grade ash is deposited between the radiant furnace outlet and the stack tip and is collected from the electrostatic precipitators. A power station generally produces small quantities of high-grade ash and large amounts of low-grade waste solids (Tsygankova et al, 2011, Lee et al, 2012.…”

“…Power plants generate a large quantity of by-products ) Tsygankova et al, 2011), which is of major concern. Fuel oil is one of the heavy fractions in oil distillation processes that is a thick viscous liquid and used for power generation due to its high energy value.…”

Influence of leaching parameters on the vanadium extraction from petroleum coke

“…Spent catalysts and ash from boilers of thermoelectric power plants using fuel oil and petroleum coke can also serve as raw materials for vanadium recovery. A large number of studies have been carried outon the extraction of vanadium using ash from thermal power plants as a raw material [11][12][13][14][15][16] and few research is devoted the study of coke as a raw material for the recovery of vanadium [17,18].…”

V and Ni recovery from a vanadium-rich power plant residual ash using acid producing fungi: Aspergillus niger and Penicillium simplicissimum

“…The other present heavy metals originate from corrosion of the equipment at high temperatures during the process. [1][2][3] Because V and Ni content of PPR ashes, about 2-4%, is an amount comparable to that of natural mineral resources, recovery of these metals is of great importance from both economic and environmental aspects. Bioleaching is an ecofriendly and more cost efficient approach for recovering valuable metals from these solid wastes and detoxifying them, in comparison to the chemical approaches in which strong chemicals under high temperature and pressure conditions are used.…”