241 Accesses. Explore all metrics. Abstract. In this study, it was aimed to extract vanadium (V) and nickel (Ni) from a petroleum coke ash (PCA) using a roasting …
Vanadium recovery from oil fly ash was conducted by carbon burning and roast-leach processes. Water was selected as a reagent to extract vanadium from the …
1707. Altmetric. - Citations. 1. LEARN ABOUT THESE METRICS. Export RIS. PDF (5 ) Get e-Alerts. SUBJECTS: Anions, Extraction, Ions, Iron, Vanadium. …
Hydrochloric acid leaching has been widely used in the recovery process of vanadium due to its efficient selectivity. It was necessary to further separate vanadium from hydrochloric acid leaching solution. Four extractants of P204, P507, Cyanex272, and N1923 were compared for extraction of vanadium from a simulated hydrochloric acid …
Extraction of Vanadium from Athabasca Tar Sands Fly Ash. Theproduction of refinery grade oil from the Alberta tar s nds deposits ascurrently practiced by Suncor (formally Great Canadian O Sands l Ltd.--GCOS) generates a substantial amount of petroleum coke fly ash which contains appreciable amounts of valuable metals such as …
Teng, Y. Vanadium: A Review of. Different Extraction Methods to. Abstract: The excessive input of heavy metals such as vanadium (V) into the environment has been one of the consequences of global industrial development. Excessive exposure to V can pose a potential threat to ecological safety and human health.
The recovery of vanadium from heavy oil fly ash having a high carbon content was performed using a four-step process consisting of a preliminary burning in order to reduce the carbonaceous fraction, followed by an acid leaching and an oxidative precipitation of vanadium pentoxide. ... The extraction yield of vanadium for the …
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-sulphurisation (pre-treatment) stage, and finally a smelting step in an electric-arc-furnace ...
The effect of roasting and leaching variables on vanadium extraction from boiler ash, such as roasting temperatures, NaCl dosages, roasting time, and solid:liquid ratios has been studied. The ...
The dried sediments were calcined for 1 hour 450qC, 1 h V2 O5 in a furnace at 450°C and weighted. Based on the mentioned method, the flow-chart of Fig. 1. Flow-chart of vanadium extraction from fuel fly ash. vanadium oxide extraction from fuel fly ash is illus- …
open access. Abstract. The paper evaluates all important aspects related to V present in coal and its behaviour during coal combustion with particular attention paid to …
The effect of roasting and leaching variables on vanadium extraction from boiler ash, such as roasting temperatures, NaCl dosages, roasting time, and solid: liquid ratios has been studied. The ...
Abstract In the current project, V2O5 extraction from fuel fly ash was carried out, and the advanced extraction method was investigated. This reduced the percentage of industrial fuel fly ash residue pollution in the environment. The project was done with two materials: V2O5 and fuel fly ash. The extraction method includes alkaline leaching, pH …
Fuels 2023, 4 59 in the titanomagnetites or scrap steel that is put back into the feed stream [9,10]. This vanadium is separated along with the slag in the Basic Oxygen Furnace (BOF), where
In this study, it was aimed to extract vanadium (V) and nickel (Ni) from a petroleum coke ash (PCA) using a roasting process without additives, followed by leaching with sulfuric acid (H2SO4). The experiments were designed based on the Taguchi approach, taking into account the parameters of temperature, acid concentration, time, …
Vanadium products include three grades, vanadium slag and other vanadium extraction raw materials are primary vanadium products, vanadium oxides such as V 2 O 3, V 2 O 5 are secondary vanadium products, and alloys such as Fe V, Al V and metallic vanadium are tertiary vanadium products [20].At present, there have been …
The current research examined the extraction of germanium, vanadium, and lithium from coal fly ash (CFA) using a sequential sodium salt roasting and organic acid leaching process. To this end, three sets of experiments were performed. In all experiments, CFA was roasted with salt at 850 °C and then leached with an organic acid.
Fly ashes resulting from the combustion of fuel containing high concentrations of vanadium that can be slightly removed by water and more efficiently by alkaline or acid solutions. This uncontrolled release can contaminate water sources and requires appropriate storage of fly ashes. This study investigated the possibility of cleaning the …
Vanadium extraction from steel slags is well studied, while extraction from secondary sources such as petcoke is not well understood. Vanadium is one of the 50 critical minerals identified by the United States Department of Interior. Considering the annual production of petcoke, it is a valuable secondary source of vanadium, especially …
Fig. 3 shows that the extraction of vanadium and nickel increases with the increase of temperature in the range of 160–220 °C. After 15 min at 220 °C complete extraction of vanadium and nickel (97%) was reached with only 4% iron dissolution. From an Arrhenius plot as shown in Fig. 4 the calculated value of apparent activation energy …
fuel ash, waste chemical catalysts) and vanadium-containing stone coal [30]. Table3shows the overview of major vanadium producers in the world in 2018 [30]. In 2018, the world's total vanadium output calculated in the form of metal vanadium was 91,844 t [30]. The global market share of vanadium products in 2018 was approximately …
The activation energy of the leaching reaction in the temperature range 25 to 65 °C was found to be 17.1 kJ mol −1. 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 H 2 O 2. Go to: 1. Introduction.
Fly ashes resulting from the combustion of fuel containing high concentrations of vanadium that can be slightly removed by water and more efficiently …
The distribution of vanadium in fly ash became more scattered, and the leaching of vanadium in fly ash was easier than that in stone coal. In order to extract vanadium from fly ash, some leaching agents such as sulfuric acid, hydrochloric acid, alkali and ammonia could be used to dissolve the unsolvable vanadium compounds.
However, the extraction percentage should be evaluated in the context of bulk V content in the leached material; for example, 80% V leached from 3990 ppm in asphaltite ash provide more V than recovery from wood ash with 6 …
The composition of the fly ashes is reported in Table 1. Of the three oil-fired fly ash samples, sample C is characterised by a high carbonaceous fraction and by a lower vanadium content. The Orimulsion fly ash shows a much higher vanadium content than the oil fly ashes. Due to the Table 1 Main constituents of the fly ashes Žwt.%. Oil fly …
As can be seen, the conventional methods for vanadium extraction used in the processing of titanomagnetite ores, heavy-oil ash, and products of their processing cannot be applied to black shale. Considering the relatively low costs associated with vanadium extraction from shale, the survey of domestic black shale is an urgent task.
Vanadium as a rare element has a wide range of applications in iron and steel production, vanadium flow batteries, catalysts, etc. In 2018, the world's total vanadium output calculated in the form of metal vanadium was 91,844 t. The raw materials for the production of vanadium products mainly include vanadium-titanium magnetite, …
Solvent extraction and separation of nickel and vanadium from sulfate leach liquor of power plant fly ash using D 2 EHPA and Cyanex. Ehsan Vahidi M. Noori F. Rashchi Ataollah Babakhani. Chemistry, Environmental Science. 2013. In this investigation, recovery and separation of nickel and vanadium from leach liquors of power plant fly …
A H2SO4–H2O2 system was developed to enhance the efficacy of vanadium extraction from roasted vanadium steel slag. The optimum parameters and the behavior of vanadium extraction were investigated systematically. When 1 mL of H2O2 per gram of vanadium slag was added to a leaching mixture at 50 °C, along with 30% H2SO4, 80.5% of …
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 …
The effect of roasting and leaching variables on vanadium extraction from boiler ash, such as roasting temperatures, NaCl dosages, roasting time, and solid:liquid ratios has been studied. The prepared Boiler ash–NaCl mixture has been roasted in the temperature range 700–1000 ℃, and then, the obtained roast has been leached using …
For each experiment, 1.00 g of coal fly ash was thoroughly mixed with 0.50 g of Na 2 CO 3, then transferred to ceramic crucibles and treated in a furnace for two hours at 850 • C in order to ...
