The production of refinery grade oil from the Alberta tar sands deposits as currently practiced by Suncor (formally Great Canadian Oil Sands Ltd.—GCOS) generates a substantial amount of petroleum coke fly ash which contains appreciable amounts of valuable metals such as vanadium, nickel and titanium. Although the recovery of vanadium from petroleum ash is a well …
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The double treatment of oil fly ash with deionised water and hydrochloric acid allows for the extraction of over 85 % of the vanadium, iron, and nickel content in the ash.
This research mainly focuses on the recovery of vanadium from oil fly ash by carbon removal and the roast-leach process. The oil fly ash contained about 85% unburned carbon and 2.2% vanadium by ...
Through the burning process, the vanadium was released and enriched in fly ash. Because of particular vanadium migration behaviors, the distribution of vanadium in phases became more scattered ...
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Speciation of vanadium was carried out using a seven-step sequential extraction procedure of the coal bottom ash each releasing species of vanadium: Water soluble, exchangeable, carbonate ...
Recovery of vanadium and nickel from an oil fly ash is studied in a two-step leaching process, carried out under ambient pressure without calcination. In the leaching, nickel is dissolved with NH 4 Cl in the first step, followed by vanadium leaching with Na 2 CO 3 in the second step. Both leachants depress the dissolution of iron and aluminium from the ash and …
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Recovery of germanium, vanadium and lithium from coal fly ash with biogenic 2 carboxylic acids 3 Homa Rezaei1,2, Sied Ziaedin Shafaei1, Hadi Abdollahi1, Sina Ghassa1*, Zohreh Boroumand1, 3, 4 Alireza Fallah Nosratabad4 1School 2 6 of Mining, College of Engineering, University of Tehran, Tehran 1439957131, Iran Department of Materials ...
Semantic Scholar extracted view of "A study of the extraction of vanadium and nickel in oil-fired fly ash" by Shang-Lin Tsai et al. ... Abstract In the current project, V 2 O 5 extraction from fuel fly ash was carried out, and the advanced extraction method was investigated. This reduced the percentage of industrial fuel fly ash … Expand. 4.
Boiler ash, or oil ash, is a solid waste produced by burning heavy fuel oil (HFO) in electrical power plants. In addition to carbon, it usually contains V (4.4–19.2%) and Ni (2.7–8.5%), and therefore, they are regarded as promising resources for vanadium extraction [1,2,3].More than 4000 metric tons of oil ashes are generated annually from 21 Egyptian electric power …
The critical role of vanadium in metallurgy and the increasing commercialization of vanadium redox flow batteries have contributed to a rise in market demand for vanadium, emphasizing the need to ensure the sustainability of vanadium production. Converter vanadium slag and stone coal, generated during the smelting process of vanadium–titanium magnetite, …
Vanadium does not form concentrated deposits like other metals such as copper, nickel or zinc. It is widely dispersed in the Earth's crust, with V 3+ replacing Fe 3+ or Al 3+ in a number of minerals. Vanadium as V 3+ can substitute for Fe 3+ in magnetite (Wenk and Bulakh, 2004); vanadium(III) and iron(III) ions have near identical ionic radii in octahedral sites of …
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A recovery of 89% vanadium was achieved and the whole process was carried out with a 100 kVA DC arc furnace with a charge of about 150 kg of fly ash.
In this work, vanadium (V) was selectively extracted from fuel-oil fly ash using a leaching process utilizing organic acids extracted from lemon juice with assistance from ultrasound and H2O2.
A process has been developed to recover gallium and vanadium from coal fly ash in which they exist at very low concentration in a mixture of high concentration of less desirable species. Aqueous solution containing 2.8 mg/l gallium and 35 mg/l vanadium was obtained by leaching with 1.5 mol/l sulfuric acid. These metals were then concentrated by use of a chelating resin …
Vanadium Recovery from Oil Fly Ash by Carbon Removal and Roast-Leach Process MYUNGWON JUNG1 and BRAJENDRA MISHRA1,2 1.—Center for Resource Recovery and Recycling, Worcester Polytechnic Institute, Worcester, MA, USA. 2.—e-mail: [email protected] This research mainly focuses on the recovery of vanadium from oil fly ash by
Taking into account the composition of oil fly ash and the experimental procedure (mass of oil fly ash, volumes of leaching solution and rinsing solution) for the leaching process, it was possible to calculate the extraction percentage for the various metals in relation to the total amount in oil fly ash. Vanadium recovery reached 98% (mean ...
Heavy fuel oil is used in power production and water desalination plants, which results in producing large amounts of flyash that needs to be utilized or at least managed properly. If disposed in landfills, heavy fuel oil flyash (HFOF) may have detrimental effects on surrounding environments, particularly, ground and surface waters. Therefore, HFOF must be subjected to …
Vanadium Recovery from Oil Fly Ash by Carbon Removal and Roast-Leach Process MYUNGWON JUNG1 and BRAJENDRA MISHRA1,2 1.—Center for Resource Recovery and Recycling, Worcester Polytechnic Institute, Worcester, MA, ... ICP-AES As-received oil fly ash Vanadium-enriched product Element Composition, wt.% Composition, wt.% Al 0 1.2 Fe 1.9 …
1 Solvent extraction and separation of nickel and vanadium from sulfate leach liquor of power plant fly ash using D2EHPA and Cyanex 272 Ehsan Vahidi1, Mehdi Noori2, Fereshteh Rashchi2, Ataollah ...
A variety of chemical and physical separation methods have been implemented to extract vanadium and nickel from oil-coming wastes. Chemical separation of fly ash components by thermal processing ...
In order to reduce the environmental impact due to land disposal of oil fly ash from power plants and to valorize this waste material, the removal of vanadium was investigated using leaching processes (acidic and alkaline treatments), followed by a second step of metal recovery from leachates involving either solvent extraction or selective precipitation.
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Vanadium is typically obtained as a by-product of steel manufacturing from titano-magnetite ores (Chen et al., 2015; Gilligan et al., 2020).Petroleum residues, fly ash from the combustion of fuels, and spent catalysts, especially from sulfuric acid production and crude oil refining, are secondary sources of vanadium (Gilligan et al., 2020; Baritto et al., 2022; Marafi …
The Puertollano Integrated Coal Gasification Combined Cycle (IGCC) Power Plant (Spain) fly ash is characterized by a relatively high content of Ga and V, which occurs mainly as Ga2O3 and as Ga3 ...
Europe PMC is an archive of life sciences journal literature. In order to reduce the environmental impact due to land disposal of oil fly ash from power plants and to valorize this waste material, the removal of vanadium was investigated using leaching processes (acidic and alkaline treatments), followed by a second step of metal recovery from leachates involving …
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