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vanadium nickel enrichment

  • Factors controlling enrichment of vanadium and nickel in

    Dec 01, 1982· The ranges of vanadium and nickel con- centrations in extracts from algae and bitumens from different formations considered in this study (Figs. 7, 8) indicate that endemic metal concentrations may be the source of vanadium and nickel in some bi- tumens (e.g., Breathitt, Frontier, Ferris, and Carbon- dale), but the enriched concentrations of

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  • Assessment of vanadium and nickel enrichment in Lower

    Oct 01, 2020· We report sediment concentrations of oil sands indicator metals vanadium (V) and nickel (Ni), because they are the two most abundant metals in Athabasca Oil Sands bitumen, their concentration in bitumen is high relative to other geological sources of river sediment, they become enriched during petroleum coke processing, and they are potentially

  • Author: Wynona H. Klemt, Mitchell L. Kay, Johan A. Wiklund, Brent B. Wolfe, Roland I. Hall
  • Factors controlling enrichment of vanadium and nickel in

    The potential for vanadium and nickel enrichment is therefore the highest in organic matter derived from algae that encountered anaerobic conditions early in their depositional history. Metallation of tetrapyrrole complexes appears to occur within sediments prior to their lithification, and interstitial waters are the most likely source for

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  • Assessment of vanadium and nickel enrichment in Lower

    Assessment of vanadium and nickel enrichment in Lower Athabasca River floodplain lake sediment within the Athabasca Oil Sands Region (Canada) Localized enrichment within the oil sands region via atmospheric pathways is a greater concern for ecosystems and society than local and far-field transport by fluvial pathways.

  • Author: Wynona H. Klemt, Mitchell L. Kay, Johan A. Wiklund, Brent B. Wolfe, Roland I. Hall
  • The stable isotope composition of vanadium, nickel, and

    Aug 01, 2015· M.D. Lewan, J.B. MaynardFactors controlling enrichment of vanadium and nickel in the bitumen of organic sedimentary rocks. Geochim. Cosmochim. Acta, 46 (1982), pp. 2547-2560. Article Download PDF View Record in Scopus Google Scholar. Lipiner et al., 1988.

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  • Vanadium, nickel and cobalt variations in eclogites from

    The V-Ni-Co variation trend of Roberts Victor eclogites is toward the enrichment of vanadium at the expense of nickel with relatively little change of cobalt. The systematic V-Ni-Co variation together with petrographic evidences suggest that Group I and Group II eclogites from Roberts Victor Mine were most probably formed by fractional crystallization. <P />Онлайн-запрос

  • Chalice acquires two highly prospective vanadium-nickel

    May 23, 2018· Known vanadium mineralisation within the Toolebuc formation typically occurs near surface within oxidised coarse limestone-rich clay and underlying fine-grained carbonate shales where enrichment of vanadium, along within other metals (molybdenum, nickel and copper), has occurred through sedimentary processes.Онлайн-запрос

  • Enrichment of U, Mo, V, Ni and Ti from asphaltite ash

    By flotation of the sample obtained from optimum sulfurization conditions, the concentrates containing all the uranium, molybdenum, vanadium, nickel and titanium was obtained. It was established that the above mentioned elements were enriched 12 times more than the original ash at the concentrate phase.Онлайн-запрос

  • Nickel-Vanadium (NiV) Alloy AZoM

    Aug 07, 2013· Nickel-Vanadium (NiV) alloy is composed of nickel and vanadium along with small amounts of iron, nitrogen and oxygen. In order to increase the surface hardness of nickel alloys they are subjected to a process of nitriding. The alloy appears as a silvery-white metal.

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  • Redox activity of nickel and vanadium porphyrins: a

    vanadium is enriched in residue fractions (>500 C) and only alittlevanadium iscontainedinthedistillates(350–500 C).10 By separation of some atmospheric residue to SARA (saturate, aromatic, resin, and asphaltene) it was found that the majority of vanadium and nickelОнлайн-запрос

  • Chalice acquires two highly prospective vanadium-nickel

    May 23, 2018· Known vanadium mineralisation within the Toolebuc formation typically occurs near surface within oxidised coarse limestone-rich clay and underlying fine-grained carbonate shales where enrichment of vanadium, along within other metals (molybdenum, nickel and copper), has occurred through sedimentary processes.Онлайн-запрос

  • Formation of fine particles enriched by V and Ni from

    Vanadium and nickel were more enriched in fine particles, particularly in ultra-fine particles. The conventional air pollution devices showed inefficient capability to remove ultra-fine particles enriched with hazardous transition metal elements such as vanadium and nickel. The present study attempts to investigate the emission characteristicsОнлайн-запрос

  • (PDF) Nickel and Vanadium Concentrations and Its Relation

    Nickel and Vanadium Concentrations and Its Relation with Sediment Acute Toxicity. Hence, the present study has been undertaken to identify the enrichment pattern of ALTEs (or labile metals) inОнлайн-запрос

  • Chromatographic enrichment and subsequent separation of

    Nov 04, 2014· 1. Anal Chem. 2014 Nov 4;86(21):10708-15. doi: 10.1021/ac502672b. Epub 2014 Oct 20. Chromatographic enrichment and subsequent separation of nickel and vanadyl porphyrins from natural seeps and molecular characterization by positive electrospray ionization FT-ICR mass spectrometry.Онлайн-запрос

  • Determination of vanadium, nickel, copper and iron as

    Aug 03, 2013· Enriched vanadium and nickel concentrations greater than 100ppm are observed in bitumens that are associated with type II kerogens. Bitumens associated with type III kerogens contained vanadiumОнлайн-запрос

  • Where Has All the Oil Gone? The use of trace metals as

    Vanadium and nickel enrichment in marine sediments varied from 10 to 32% and 0 to 22%, respectively. Visible contamination in beach sands was found between 20-60cm beneath the surface and, likewise, showed Ni, V, and Co enrichment up to 33%, 45%, and 100%.

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  • Migration and Transformation of Vanadium and Nickel in

    energies Article Migration and Transformation of Vanadium and Nickel in High Sulfur Petroleum Coke during Gasication Processes Wei Li 1, Ben Wang 1,*, Jun Nie 1, Wu Yang 1, Linlin Xu 2 and Lushi Sun 1,* 1 State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China; [email protected] (W.L.); [email protected] (J.N.);Онлайн-запрос

  • Role of nickel and vanadium in petroleum classification

    Chromatographic Enrichment and Subsequent Separation of Nickel and Vanadyl Porphyrins from Natural Seeps and Molecular Characterization by Positive Electrospray Ionization FT-ICR Mass Spectrometry. Analytical Chemistry 2014, 86 (21) , 10708-10715. DOI: 10.1021/ac502672b.Онлайн-запрос

  • Formation of fine particles enriched by V and Ni from

    Vanadium and nickel were more enriched in fine particles, particularly in ultra-fine particles. The conventional air pollution devices showed inefficient capability to remove ultra-fine particles enriched with hazardous transition metal elements such as vanadium and nickel. The present study attempts to investigate the emission characteristicsОнлайн-запрос

  • Chromatographic enrichment and subsequent separation of

    Nov 04, 2014· 1. Anal Chem. 2014 Nov 4;86(21):10708-15. doi: 10.1021/ac502672b. Epub 2014 Oct 20. Chromatographic enrichment and subsequent separation of nickel and vanadyl porphyrins from natural seeps and molecular characterization by positive electrospray ionization FT-ICR mass spectrometry.

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  • RECOVERY OF VANADIUM AND NICKEL FROM OIL FLY ASH

    leachability of five major metals (vanadium, nickel, iron, magnesium, and aluminum) by Oil fly ash (OFA) is a type of carbon enriched solid waste generated from burning of crude and residual oil. Transition metals are naturally presented in the fuel oil and duringОнлайн-запрос

  • US4816236A Recovery of vanadium and nickel from

    A process is provided for the recovery of vanadium and nickel values from petroleum residues and, in particular, from Flexicoke. In the process, Flexicoke is blended with an alkali metal source, such as sodium sulfate or sodium carbonate, and then roasted in an oxygen-containing gas until carbon is removed and a fused mixture is obtained.Онлайн-запрос

  • Accumulation of vanadium, manganese, and nickel in

    The vanadium, manganese, and nickel contents of nine species of Antarctic tunicates were determined by atomic absorption spectroscopy. The Antarctic species Distaplia cylindrica containedОнлайн-запрос

  • Chemistry and Association of Vanadium Compounds in Heavy

    Apr 23, 2010· Vanadium and Nickel Distribution in Resin Fractions of High-Sulfur Heavy Oils. Chemistry and Technology of Fuels and Oils 2018, 53 (6) , 862-868. DOI: 10.1007/s10553-018-0873-3. Aaron Akah. Application of rare earths in fluid catalytic cracking: A review.Онлайн-запрос

  • Vanadium: Environmental Pollution and Health Effects

    3, 9,11,12 At present, vanadi-um has the highest anthropogenic enrichment factor of all trace elements in the atmosphere; it ranks fourth in this factor for global rivers (after antimony, cadmiumОнлайн-запрос

  • Vanadium Mining and Deposit Types | INN

    Vanadium is a key component in steel, but it has other emerging applications as well. Learn about vanadium mining and the deposits this industrial metal comes from.Онлайн-запрос

  • Trace Metals in Soot and PM2.5 from Heavy-Fuel-Oil

    Heavy fuel oil (HFO) particulate matter (PM) emitted by marine engines is known to contain toxic heavy metals, including vanadium (V) and nickel (Ni). The toxicity of such metals will depend on the their chemical state, size distribution, and mixing state. Using online soot-particle aerosol mass spectrometry (SP-AMS), we quantified the mass of five metals (V, Ni, Fe, Na, and Ba) in HFO-PM sootОнлайн-запрос

  • Recovery of vanadium and nickel from petroleum residues

    Mar 28, 1989· A process is provided for the recovery of vanadium and nickel values from petroleum residues and, in particular, from Flexicoke. In the process, Flexicoke is blended with an alkali metal source, such as sodium sulfate or sodium carbonate, and then roasted in an oxygen-containing gas until carbon is removed and a fused mixture is obtained.Онлайн-запрос

  • Chromatographic Enrichment and Subsequent Separation of

    We report a novel chromatographic method to enrich and separate nickel and vanadyl porphyrins from a natural seep sample and combine molecular level characterization by positive-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Vanadyl and nickel porphyrin model compound elution from primary secondary amine (PSA) stationary phase combinedОнлайн-запрос

  • Assessment of atmospheric metal pollution in the urban

    Enrichment factors were calculated, i.e., total to background concentration ratio, for each metal. Low enrichments of vanadium, cobalt, nickel, and copper (≈2), and mild enrichments of chromium and zinc (4.4, 4.5 respectively) were found in the entire area; oppositely, high enrichments were assessed for antimony (28.6) and lead (17.2).Онлайн-запрос

  • Vanadium-Enriched Cordyceps sinensis, a Contemporary

    Thus, the present study was carried out to investigate the possible role of vanadium-enriched Cordyceps sinensis (VECS) in preventing depression in diabetes and influencing the longer-term course of glycemic control. One novel vanadium complex of VECS is designed and evaluated in this article. arsenic, copper, nickel, silver,