In order to extract nickel and vanadium from heavy oil fly ash, Tokuyama et al. [31] investigated a process with two different steps; leaching and ion exchange. 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 ...

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 ...

In order to extract nickel and vanadium from heavy oil fly ash Tokuyama [5] investigated a process with two different steps; leaching and ion exchange. At leaching process

FA the main by-product resulted from coal combustion attained the interest of many scientists nowadays due to its powerful properties and applications. Fly as is classified to Class C and Class F where the loss of ignition in class F is higher than Class C. Also, Class C fly ash contains a higher amount of CaO.

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 …

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 …

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.

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 …

Extraction and separation of vanadium and nickel from fly ash produced in heavy fuel power plants. Chemical Engineering Journal 2011, 173 (1), 191-197. …

Extraction and separation of vanadium and nickel from fly ash ... EN English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian …

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. …

Separation and Purification Technology, 2018, 190: 123âˆ'135. [34] TOKUYAMA H, NII S, KAWAIZUMI F, TAKAHASHI K. Process development for recovery of vanadium and nickel from heavy oil fly ash by leaching and ion exchange [J]. Separation Science and Technology, 2003, 38: 1329âˆ'1344. [35]

The invention is addressed to the recovery of vanadium by the treatment of fly ash derived from bituminous or petroleum products, such as bituminous schists. In accordance with the practice of this invention, the fly ash is treated with a concentrated caustic soda solution selectively to solubilize vanadium, and in adding calcium oxide to the reacting solution in …

The recovery of vanadium from petroleum fly ash is a well established process based on relatively simple leaching operations. In Canada in 1965, Bechtel Corp. built a plant for recovering vanadium pentoxide from petroleum fly ash for Canadiun Petrofina at its facilities in Pointe-aux-Trembles, Quebec. ... namely the separation of the bitumen ...

Petcoke is a solid carbon-rich residue produced during petroleum refining. Petcoke mineral matter is rich in vanadium that, when alloyed with other metals, can significantly improve its properties. Vanadium extraction from steel slags is well studied, while extraction from secondary sources such as petcoke is not well understood. …

This paper discusses the experimental extraction of vanadium and nickel from oil-fired fly ash. The results indicated that leaching of oil-fired fly ash in 0.5 N of sulfuric acid led to an extraction of 65% vanadium, 60% nickel, and 42% iron, along with an increase in the concentration of sulfuric acid. When leached in 2 N sodium hydroxide ...

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 …

The highest recoveries for germanium, vanadium and lithium were 40.2%, 53.8% and 25.8%, ... Recovery of rare earth elements from coal fly ash by integrated physical separation and acid leaching. Chemosphere, 248 (2020), Article 126112, 10.1016/j.chemosphere.2020.126112.

Extraction of Vanadium from Fly Ash Produced in Heavy … · vanadium, heavy fuel, fly ash, leaching, extraction 1. Introduction The power generation station that uses heavy oil produces a solid residue called fly ash [1]. Fly ash generated during oil combustion. Fly ash is rich in Ni, V, Fe, Mo, Mg, Na and C and among these metals Ni and V are ...

Seggiani et al. 69 investigated the extraction of nickel from sulfate solution leachate of Orimulsion fly ash after vanadium recovery using ion exchange chelating resins. Three commercial chelating resins, …

Vanadium metal was selectively extracted (95%) with 0.1–0.2 M H 2 SO 3 at 323–363 K, with an ash/reagent ratio of 1/4 and extraction time of 45 min [15]. In a similar study, FA was heated at moderate temperatures (150 °C), a de-carburization and de …

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 amounts of heavy metals. …

1. Introduction Every year large volumes of bottom and fly ashes are generated around the world by burning fuel oil in thermal power plants. 1 These ashes contain valuable metals such as vanadium (V), nickel (Ni), copper (Cu), zinc (Zn), cobalt (Co), etc., which have many industrial applications. 1,2 On the other hand, if there is no treatment of fly ashes, …

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 …

Recovery of Vanadium from sulfuric acid medium by micro extraction by tri C8C10 –alkyl (Amines) ... [13], spent catalysts [4], and oil fly ash[513], are becoming interesting sources for the recovery of vanadium ... After phase separation, the concentration of vanadium left in the aqueous phase was

The vanadium electrolyte was synthesized by using fly ash leachate as the resource materials in two different ways afterwards: reducing vanadium in the leachate directly (electrolyte from leachate ...

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 …

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.

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 Ga 2 O 3 and as Ga 3+ and V 3+ substituting for Al 3+ in the Al–Si fly ash glass matrix. Investigations focused on evaluating the potential recovery of Ga and V from …

Gupta and Krishnamurthy (1992) reported the chemical composition of petroleum fly ash from various origins and observed a great diversity in their …