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separation vanadium exchange

  • Adsorption of Vanadium (IV) on the Synthesized D2EHPA-TBP

    It combines the advantages of ion exchange and solvent extraction and has got more attention in separation and recovery of vanadium on account of its good selectivity easy operability and environmental friendliness . Di-(2-ethylhexyl)phosphoric acid (D2EHPA) is a widely used extractant for separation of V(IV) in solvent extraction .

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  • Solvent extraction separation of vanadium(V) from

    The separation and recovery possibilities of vanadium(V) from other associated metal ions viz magnesium(II) aluminium(III) titanium(IV) chromium(III) manganese(II) and iron(III) which are present in the waste chloride liquors from the processing of titanium minerals are also discussed.

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  • Extraction of Boron and Vanadium from Abu Hamata Alkali

    Extraction of Boron and Vanadium from Abu Hamata Alkali Leach Solution by using Ion Exchange Resinwritten by Mr. Walid Abdellah Mr. Walid Abdellah Dr. Abdallah Alshami published on 2014/03/31 download full article with reference data and citations

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  • THE ANION-EXCHANGE SEPARATION OF TITANIUM

    Abstract. A detailed study was made of the adsorption of titanium zirconium niobium tantalum molybdenum and tungsten on the anion-exchange resin De- Acidite FF from solutions containing mixtures of two or more of hydrofluoric acid hydrochloric acid ammonium fluoride and ammonium chloride with a view to obtaining a separation scheme for these elements that could be completed

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  • First Vanadium Corp.First Vanadium Announces

    Vanadium mining exploration development near Elko NV. High grade shallow. flotation leaching solid-liquid separation solvent extraction and ion exchange precipitation and calcination) and common chemicals (oxygen sulfuric acid ammonium carbonate and ammonium sulfate).

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  • Adsorption of Vanadium (IV) on the Synthesized D2EHPA-TBP

    It combines the advantages of ion exchange and solvent extraction and has got more attention in separation and recovery of vanadium on account of its good selectivity easy operability and environmental friendliness . Di-(2-ethylhexyl)phosphoric acid (D2EHPA) is a widely used extractant for separation of V(IV) in solvent extraction .

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  • Selective recovery of vanadium and scandium by ion

    More than 99 of vanadium was selectively adsorbed from the hydrochloric acid leaching solution under the conditions of pH value of 1.8 volume ratio of leaching solution to resin of 10 and flow rate of 3.33 mL/min. Maximum extraction and separation of scandium was observed from the acid leaching solution at an aqueous pH value of 0.2.

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  • Separation of vanadium isotopes by ion-exchange

    Cation-exchange displacement chromatography of VO 2 was carried out for studying vanadium isotope effects in carboxylate ligand-exchange systems. The heavier isotope 51 V was enriched in the carboxylate complex solution. The isotope separation coefficients ϵ(=α−1) for 50 V/ 51 V were 2.2·10 −4 and 2.4·10 −4 for citrate and lactate systems at 298 K respectively.

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  • 7. ANALYTICAL METHODS

    VANADIUM 155 7. ANALYTICAL METHODS Several ion-exchange resins functionalized cellulose sorbents and chelating resins have been studied for the selective preconcentration and separation of vanadium species. Cellulose sorbent with phosphonic acid exchange groups gives excellent enrichment of vanadium(IV) and

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  • Cation exchange studies of vanadium(V) on SpringerLink

    Summary. The cation exchange behaviour of milligram amounts of vanadium on Dowex 50W-X8 has been studied using different eluants. Quantitative elution can be achieved by 200 ml of 0.5N hydrochloric acid 1–2N sulphuric acid 2–3N phosphoric acid or 0.5–1N ammonium chloride solution.

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  • Selective recovery of vanadium and scandium by ion

    More than 99 of vanadium was selectively adsorbed from the hydrochloric acid leaching solution under the conditions of pH value of 1.8 volume ratio of leaching solution to resin of 10 and flow rate of 3.33 mL/min. Maximum extraction and separation of scandium was observed from the acid leaching solution at an aqueous pH value of 0.2.

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  • Extraction of vanadium from sulfuric acid leaching

    Extraction of vanadium from sulfuric acid leaching solution of stone coal by ion exchange Xiao Yang Yi-min Zhang Shen-xu Bao School of Resources and Environmental Engineering Wuhan University of Technology 122 Luoshi Road Wuhan Hubei 430070 PR China Received June 26 2015 Revised September 10 2015

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  • Selective Separation of Vanadium from Molybdenum Using

    This article presents the preparation of a new type of metal ion selective resin based on phosphoric acid functionality and its application on the separation of Mo and V ions. The metal ion selective resin can be prepared by immobilizing D2EHPA onto the surface of porous Amberlite XAD‐4 resin employing a solvent–nonsolvent process. The amount of immobilized D2EHPA is as high as 2.5 (mmole

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  • Experiment 4 Separation of the Beautiful Oxidation States

    ion-exchange chromatography and to appreciate the beautiful colors of first-row transition metals. Introduction The transition element vanadium has four common oxidation states V5 V4 V3 and V2 . The stabilities and colors of these are investigated using ion exchange

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  • Ion Exchange Applications by François de Dardel

    1. Applications of ion exchange resins in water treatment. Water softening and demineralisation are also described with chemical reactions in the IX basics page. And regeneration methods are in another page. 1.1. Softening A strongly acidic cation exchange resin is used here in the sodium form.

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  • Selective separation of vanadium from molybdenum by

    Selective separation of vanadium from molybdenum by electrochemical ion exchange Selective separation of vanadium from molybdenum by electrochemical ion exchange Henry P Van Lierde A 00 00 00 This paper presents the results of work on the selective electrochemical elution of vanadium co-adsorbed with molybdenum on Amberlite IRA 94S resin.

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  • Determination of Precise and Accurate 51V/50V Isotope

    We present the first technique to obtain precise and accurate vanadium (V) stable isotope compositions by chemical isolation and multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS). Separation of V from matrix elements was achieved via five separate ion exchange columns.

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  • Solvent extraction separation of vanadium(V) from

    The separation and recovery possibilities of vanadium(V) from other associated metal ions viz magnesium(II) aluminium(III) titanium(IV) chromium(III) manganese(II) and iron(III) which are present in the waste chloride liquors from the processing of titanium minerals are also discussed.

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  • Ion exchangeWikipedia

    Ion exchange is an exchange of ions between two electrolytes or between an electrolyte solution and a complex most cases the term is used to denote the processes of purification separation and decontamination of aqueous and other ion-containing solutions with solid polymeric or mineralic "ion exchangers".. Typical ion exchangers are ion-exchange resins (functionalized porous or gel

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  • Separation of Group VB from Liquid MediaDuPont

    Vanadium forms two ions V 4 and V 5 while a single ionic form is commonly found for the other two—Nb 5 and Ta 5 . The Group VB elements are found as oxides halides sulfates and mixed complexes. Due to their nearly identical atomic radii Nb and Ta are virtually identical from a separation

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  • Side Chain Engineering of Sulfonated Poly(arylene ether)s

    Dec 13 2019 · Proton conductivity of proton exchange membranes (PEMs) strongly relies on microscopic morphology which can be modulated by engineering the distribution of ionic groups.

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  • Separation and recovery of vanadium from a chelating ion

    Separation and recovery of vanadium from a chelating ion exchanger containing N-benzoylphenyl hydroxylamine as a covery of vanadium is by the destruction of the res-in. Several eluting agents were tested for vanadium The exchange capacities of resin for different

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  • Vanadium speciation by chromatographic separation of V(IV

    exchange column (Coetzee et al. 2002) or by a fused-silica capillary column modified with hexadecyltrimethylammo-nium bromide (Jen et al. 1997). A two-column separation of vanadium(IV) and vanadium(V) in acidic solution followed by catalytic detection (Okamura et al. 2001) has been devel-oped. One column loaded with an acetylacetone-immobilised

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  • Selective Separation of Vanadium from Molybdenum Using

    This article presents the preparation of a new type of metal ion selective resin based on phosphoric acid functionality and its application on the separation of Mo and V ions. The metal ion selective resin can be prepared by immobilizing D2EHPA onto the surface of porous Amberlite XAD‐4 resin employing a solvent–nonsolvent process. The amount of immobilized D2EHPA is as high as 2.5 (mmole

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  • Chelating Ion Exchange Resins Purolite purolite

    Purolite has a wide range of chelating ion exchange resins that have superior selectivity for specific target metals. For more information on our chelating resins head over to our website

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  • Selective separation of vanadium from molybdenum by

    Selective separation of vanadium from molybdenum by electrochemical ion exchange Selective separation of vanadium from molybdenum by electrochemical ion exchange Henry P Van Lierde A 00 00 00 This paper presents the results of work on the selective electrochemical elution of vanadium co-adsorbed with molybdenum on Amberlite IRA 94S resin.

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  • Methods of Removing Heavy Metals from Industrial

    Methods of Removing Heavy Metals from Industrial Wastewater Gunatilake S.K. vanadium platinum silver and titanium are generated in electroplating electrolysis depositions conversion- ion exchange 9 membrane separation methods 10 and electro-remediation methods are used more

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  • ON THE SEPARATION OF VANADIUM MOLYBDENUM AND

    The vanadium has been separated by cation exchange chromatography in citric acid on 3-g AG50number-X8 resin columns followed by spectrophotometry of the 4-(2-pyridylazo)resorcinol (PAR) complex in the presence of CDTA (cyclohexanediaminetetraacetic acid) to

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  • Concentration and separation of vanadium SpringerLink

    With strong alkaline anion-exchange resin 717 as the sorbent and NaOH solution as the eluent a study on the sorption from alkaline solution and elution of vanadium(V) silicon(IV) and aluminium(III) was carried out. Different parameters affecting the sorption and elution process including temperature pH values as well as the ratio of resin to solution were investigated.

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  • ON THE SEPARATION OF VANADIUM MOLYBDENUM AND

    The vanadium has been separated by cation exchange chromatography in citric acid on 3-g AG50number-X8 resin columns followed by spectrophotometry of the 4-(2-pyridylazo)resorcinol (PAR) complex in the presence of CDTA (cyclohexanediaminetetraacetic acid) to

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  • Solvent extraction separation of vanadium(V) from

    The separation and recovery possibilities of vanadium(V) from other associated metal ions viz magnesium(II) aluminium(III) titanium(IV) chromium(III) manganese(II) and iron(III) which are present in the waste chloride liquors from the processing of titanium minerals are also discussed.

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  • Side Chain Engineering of Sulfonated Poly(arylene ether)s

    Dec 13 2019 · Proton conductivity of proton exchange membranes (PEMs) strongly relies on microscopic morphology which can be modulated by engineering the distribution of ionic groups.

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  • Separation of molybdenum and vanadium from acid solutions

    Separation of molybdenum and vanadium from hydrochloric and sulfuric acid solution containing 0.2 g/L Mo (VI) and 0.2 g/L V (V) was tried by ion exchange.

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  • Concentration and separation of vanadium SpringerLink

    With strong alkaline anion-exchange resin 717 as the sorbent and NaOH solution as the eluent a study on the sorption from alkaline solution and elution of vanadium(V) silicon(IV) and aluminium(III) was carried out. Different parameters affecting the sorption and elution process including temperature pH values as well as the ratio of resin to solution were investigated.

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  • CATALYTIC PROMOTION OF THE ADSORPTION OF VANADIUM

    An improvement in the process for the recovery of vanadium from acidic phosphatic solutions is presented. In this process the vanadium is first oxidized to the pentavaleat state and is then separated by contacting such solutions with an anion exchange resin whereby adsorption of the complexed

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  • Vanadium speciation by chromatographic separation of V(IV

    exchange column (Coetzee et al. 2002) or by a fused-silica capillary column modified with hexadecyltrimethylammo-nium bromide (Jen et al. 1997). A two-column separation of vanadium(IV) and vanadium(V) in acidic solution followed by catalytic detection (Okamura et al. 2001) has been devel-oped. One column loaded with an acetylacetone-immobilised

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  • Separation and recovery of vanadium from spent vanadium

    Main techniques for the separation and purification of vanadium in spent catalyst leach solutions are precipita-tion carbon adsorption ion exchange and solvent extraction. Precipitation offers low cost and simple oper-ation however high purities of vanadium cannot be achieved by this (Zeng et al. 2006 Zeng and Yong Cheng 2009b).

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