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vanadium separation from fly ash
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Process Development for Recovery of Vanadium and Nickel …
The first step is leaching with water to dissolve Ni, Mg, Al, and Zn, and acid solution is used in the second step to recover V. The metals Ni and V are separated …
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Extraction and separation of vanadium and nickel from fly …
Extraction and separation of vanadium (V) and nickel (Ni) from FA is achieved using Akita's procedure with some modifications. In the first step, Ni is selectively eluted from FA using NH 4 OH solution and then precipitated using Na 2 S. The Ni/V …
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Recovery of gallium and vanadium from gasification fly ash
Vanadium is commonly recovered from titaniferous magnetite ores and as V 2 O 5 from by-products of crude oil, being mainly used to produce high-strength and low-alloy steels [22]. Since 50:50% coal/petcoke blend is gasified in Puertollano IGCC plant, fly ash is predictably enriched in V (up to >6000 mg/kg).
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[PDF] Extraction and separation of vanadium and nickel from fly ash …
DOI: 10.1016/J.CEJ.2011.07.080 Corpus ID: 98760333; Extraction and separation of vanadium and nickel from fly ash produced in heavy fuel power plants @article{AlGhouti2011ExtractionAS, title={Extraction and separation of vanadium and nickel from fly ash produced in heavy fuel power plants}, author={Mohammad A. …
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Metals | Free Full-Text | Vanadium and Nickel Recovery from …
Increasing research activity is mostly observed in traditional areas: metal extraction from fly ash and the reduction of metals from the ash to V–Fe and Ni–Fe …
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Recovery of vanadium and nickel from Athabasca tar sands fly ash …
Abstract. Low percentages of vanadium, nickel and iron are associated with the bitumen fraction of tar sands. Compounds of these elements are concentrated into the fly ash produced when the petroleum coke fraction of this bitumen is burned. It appears that these sands also represent a resource for vanadium and, to a lesser degree, for nickel ...
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Metals | Free Full-Text | Vanadium and Nickel Recovery from …
Bioengineering approaches to vanadium and nickel separation from ashes appear to be far from production but potentially promising . Li and ... Chianeh, F.R.; Gu, T. Ultrasound-assisted leaching of vanadium from fly ash using lemon juice organic acids. RSC Adv. 2020, 10, 1685–1696. [Google Scholar] Liu, J. Recovery of Vanadium and …
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Extraction and separation of vanadium and nickel from fly ash …
Al-Ghouti et al. [32] studied extraction and separation of vanadium and nickel from fly ash produced in heavy fuel plants. Although researchers have tried to develop a process for extracting and ...
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Vanadium recovery as FeV from petroleum fly …
Al-Ghouti et al. [45] used Akita's procedure with some modifications for extraction and separation of vanadium (V) and nickel (Ni) from fly ash in the Jordanian Central Electricity Generating ...
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Recovery of metals and other beneficial products from coal fly ash…
Burnet et al. introduced a chlorinating process, where the fly ash is first separated into magnetic and non-magnetic fractions. The non-magnetic fraction of CFA was mixed with carbon and chlorinated in a fixed bed. ... Guibal E (2007) Vanadium recovery from oil fly ash by leaching, precipitation and solvent extraction processes. …
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Recovery of vanadium and nickel from heavy oil fly ash …
To achieve this goal, an industrial waste of El Kriymat boiler fly Ash was used for recovering its content of vanadium, nickel and zinc. About 97, 95 and 99% respectively of these economic elements were first dissolved from boiler fly ash magnetic concentrate (after physical concentration).
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A sustainable method for germanium, vanadium and lithium extraction
Improving the purity of aluminum products can significantly enhance the comprehensive utilization value of fly ash. In the present paper, a novel process of preparing high-purity aluminum chloride of 99.99% from the aluminum-rich circulating fluidized bed fly ash by acid leaching-recrystallization method was developed, and the …
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Recovery of vanadium and nickel from heavy oil fly ash …
Abstract. Heavy oil fly ash "HOFA" is the fly ash generated in power stations using heavy oil as fuel. HOFA is considered a hazardous waste because it contains considerable …
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Recovery of vanadium and nickel in fly ash from heavy oil
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 …
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Vanadium recovery from oil fly ash by leaching, …
Conclusions sodium hydroxide (at controlled pH, ca. pH 12) and a pre- cipitation procedure (in two steps: pH 8 for Al precipita- The treatment of oil fly ash from power plants for the tion, and pH 5 in the presence of 1 M NH4Cl for selective recovery of vanadium can be performed in a vanadium precipitation) allows the selective recovery of two ...
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The extraction of vanadium from titanomagnetites and other sources
Navarro et al. (2007) succeeded in extracting vanadium from oil fly ash with both sulphuric acid and sodium hydroxide lixiviants. In addition to the economic benefit of recovering valuable material from a waste product, this also had the effect of reducing the toxicity of the fly ash, making it easier to dispose of.
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[PDF] Recovery of vanadium, nickel and molybdenum from fly ash …
After some preliminary tests, two leaching stages of fly ash to recover vanadium, molybdenum and nickel were selected. A first stage was an alkaline leaching of fly ash to recover vanadium and molybdenum followed by a second stage using sulfuric acid leaching of the residual ash to recover nickel. The impact of some operational …
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Simultaneous recovery of vanadium and nickel from power plant fly-ash
Section snippets Materials. The fly ash sample was a mixture collected from different power plant stations in Iran which use oil as fuel. Sulfuric acid (H 2 SO 4) used in the leaching was obtained from Merck, with a purity of 96–98%.Ammonium iron (II) sulfate (NH 4) 2 Fe(SO 4)⋅6H 2 O, ammonium persulphate (NH 4) 2 S 2 O 8 and potassium …
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Process Development for Recovery of Vanadium and …
In this investigation, recovery and separation of nickel and vanadium from leach liquors of power plant fly ash were investigated by solvent extraction using D2EHPA, Cyanex 272, and their mixtures ...
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Vanadium Recovery from Oil Fly Ash by Carbon Removal …
Abstract. 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% ...
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Recovery of gallium and vanadium from gasification fly ash
These fly ashes mainly differ in grain size and Ca content, with the contents of Ga and V ranging from 149 to 320 mg/kg and from 3302 to 6250 mg/kg, respectively (Table 1). The speciation studies on IGCC fly ash #70 have revealed that a high proportion of Ga (58%) occurs as free oxide, 24% of Ga occurs substituting for Zn in the.
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Recovery of gallium and vanadium from gasification fly ash.
DOI: 10.1016/J.JHAZMAT.2006.02.041 Corpus ID: 24735074; Recovery of gallium and vanadium from gasification fly ash. @article{Font2007RecoveryOG, title={Recovery of gallium and vanadium from gasification fly ash.}, author={Oriol Font and Xavier Querol and Roberto Juan and Raquel Casado and Carmen R. Ruiz and Angel …
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Recovery of vanadium and nickel from heavy oil fly ash …
The main organic acid produced by this fungus is malic acid. The optimum parameters for bioleaching of V and Ni from HOFA are; the fly ash concentration is 1% (w/v), pH is 6 for V and pH is 8 for Ni, and the bioleaching time is 10 days. The maximum recovery obtained for V and Ni is 65.4% and 74.6%, respectively.
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Extraction of the Rare Element Vanadium from Vanadium …
Murase et al. investigated extraction and separation of vanadium from a fly ash of Orimulsion. Air-Cl 2 or N 2-Cl 2 gas mixture were used to chlorinate valuable elements (V, Ni and Mg). The separation of V and Fe were achieved by controlled temperature of chlorination. V and Fe was selectively extracted by chlorination at 400 °C …
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Process Development for Recovery of Vanadium and …
A process for recovering V and Ni from oil fly ash and for making the ash harmless has been developed. More than 80% of V and Ni are recovered. This process involves two-step leaching and ion exchange. The first step is leaching with water to dissolve Ni, Mg, Al, and Zn, and acid solution is used in the second step to recover V.
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Process Development for Recovery of Vanadium and Nickel …
As a second step in our work of metal recovery from heavy oil fly ash, mutual separation of V/Fe was studied using a chelating resin, DIAION CR11 or a strong acid …
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Recovery of vanadium and nickel from heavy oil fly ash …
Heavy oil fly ash "HOFA" is the fly ash generated in power stations using heavy oil as fuel. HOFA is considered a hazardous waste because it contains considerable amounts of heavy metals. However, it contains significant amounts of vanadium "V" and nickel "Ni", which are precious metals for manufacturing processes.
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Vanadium Extraction from Fly Ash—Preliminary Study of …
Read this article. Fly ashes resulting from the combustion of fuel containing high concentrations of vanadium that can be slightly removed by water and more …
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Valorization of fly ash by nickel ferrite and vanadium oxide …
Extraction and separation of vanadium and nickel from fly ash produced in heavy fuel power plants. Chem. Eng. J., 173 (2011), ... Ultrasound-assisted leaching of vanadium from fly ash using lemon juice organic acids. RSC Adv., 10 (2020), pp. 1685-1696, 10.1039/c9ra09325g.
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Recovery of vanadium(V) from synthetic and real leach …
Heavy oil fly ash "HOFA" is the fly ash generated in power stations using heavy oil as fuel. HOFA is considered a hazardous waste because it contains considerable amounts of heavy metals. ... Selective separation of dissolved tungsten and vanadium is of great significance for the utilization of the secondary resources of these elements. In ...
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Simultaneous recovery of vanadium and nickel from power plant fly-ash
Nazari et al. investigated the simultaneous recovery of V and Ni from power plant heavy fuel fly-ash containing 2.2 wt% vanadium, using a hydrometallurgical process consisting of sulfuric acid ...
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Recovery of vanadium and nickel from heavy oil …
Akita et al. 50 studied the recovery of nickel and vanadium from oil fly ash in a two-step leaching process. Ni is leached with NH 4 Cl solution in the first step, followed by Na 2 CO 3 leaching of the residual …