Cation Exchange Separation Of Nickel And Zinc From Other Elements

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ZEOMAXX FILTER MEDIA

ZeoMaxx Separation Medias A family of mineral medias offering the removal of ZeoMaxx media have high cation exchange capacities. Ammonia (NH4), heavy metals (Pb, Cu, Cd, Zn, Co, Cr, Mn and Fe; Pb, Cu as high as 97 %), toxins, low level radioactive elements (Cs, Co, Sr, Ag), oils, fuels, hydraulic fluids, transmission fluid, petroleum distillates

Adsorption of Heavy Metals: A Review

Heavy metals are elements having atomic weights between 63.5 and 200.6, and a specific gravity greater than 5.0.Most of the heavy metals are dangerous to health or to the environment. Heavy metals in industrial wastewater include lead, chromium, mercury, uranium, selenium, zinc, arsenic, cadmium, silver, gold, and nickel (Ahalya

Group Separations by Anion-Exchange.

mixture of the transition metals manganese through zinc~ was investigated, a separation was obtained by successively de­ creasing the acid concentration starting with concentrated HC1. Nickel was eluted in 12 M HC1, manganese in 6 M, cobalt in 4 M, copper in 2.5 M, iron in 0.5 M and zinc in 0.005 M.

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A separation of magnesium from other alkaline earths, copper, nickel, and zinc was accomplished by using different concentrations of ammonium acetate (14). A similar technique using radioactive tracers of the alkaline earth metals was achieved by utilizing a gradient elution of ammonium acetate (10). Khopkar and De (16) did a very comprehensive

Ion exchange behaviour of 42 selected elements on AG MP-50

ION EXCHANGE BEHAVIOUR OF 42 SELECTED ELEMENTS ON AG MP-50 CATION EXCHANGE RESIN IN NITRIC ACID AND CITRIC ACID MIXTURES A thesis submitted to the UNIVERSITY OF STELLENBOSCH In fulfilment of the requirements for the degree of MASTER OF SCIENCE By NICHOLAS VAN DER MEULEN Supervisor: Dr. T. N. van der Walt Co-Supervisor: Prof. H. G. Raubenheimer

Cation Exchange Separation of Cobalt from General procedure

for the cation exchange separation of cobalt from associated elements. Generally the cation exchange chromatographic separations of cobalt have been carried out in acetone, ethanol and methanol media. However, systematic cation exchange separations of cobalt in the presence of hydrochloric acid using 2-propanol, I,4-dioxane and tetrahydrofuran

Purolite Ion Exchange Resins for Metals Recovery Applications

Rare earth elements Selection of cation exchange resins Acidic liquors or pulps Antimony Purolite® S957 Various liquors and waste waters Bismuth Purolite® S957 Various liquors and waste waters Copper, nickel, cobalt, zinc Purolite® S930Plus, Purolite® S930/4888 Acidic liquors or pulps Iron Purolite® S957 Copper and nickel electrolyte

TRACE ELEMENTS IN MUNICIPAL SOLID WASTE COMPOSTS: A REVIEW OF

matter. Many trace elements are recognized as essential for plant growth; of these, this review will focus on boron (B), zinc (Zn), copper (Cu), and nickel (Ni). While these elements are required by plants in small amounts, higher amounts are phytotoxic (deleterious to plants).

13 SAMPLE DISSOLUTION - EPA

Dissolution of radium from some ores depends on the exchange of anions associated with the radium cation (sulfate for example) to generate a soluble compound. Extraction with nitric acid is partly based on this process, generating soluble radium nitrate. 13.2.3 Oxidation-Reduction Processes

Application of Inorganic Ion Exchangers to Metallurgy

ables them to give complete separation. There are hundreds of references on in­ organic ion exchange, but the field is adequately described in two books and several review articles (i-~,~, 3l).5 There are many ways of classifying the ion-exchange compounds. Amphlett (4) grouped the inorganic ion-exchange com­

o An Anion-Exchange Method for the Separation of P-32

ture on the top of a small anion-exchange column in the chloride form and a final washing with water. Phosphorus was quantitatively adsorbed by the resin and the scandium retention was better than 96 per cent. The remaining elements passed quantitatively into the effluent, with the exception of nickel, which was adsorbed to a very small extent.

Studies of the Selective Removal of Micro-quantities of

chloride solutions in the anionic form, anion-exchange provides a better method than cation-exchange for the separation of Pt(IV) traces from extremely large amounts of base metals (aluminium, copper, nickel, iron and zinc). Platinum sorption from non-noble metal solutions has been investigated onto Polyorgs chelating

BIOAVAILABILITY OF METALS INTRODUCTION

organic content, and other environmental factors (Elder, 1989; Salomons, 1995). The relative mobility and bioavailability of trace metals associated with different fractions are shown in Table 1. The dissolved fraction consists of carbonate complexes, whose abundance increases with pH, and metals in solution, including metal cation

On-line preconcentration and determination of nickel and zinc

toxic element as compared with other transition metals. However, it is the metal component of the enzyme unease and as such considered to be essential to plants. More attention has been focused on the toxicity of nickel in low concentrations, such as the fact that it can cause a skin disorder known as nickel-eczema. Zinc is an essential trace

Ion Exchange for Dummies - Lenntech

where R represents the anion exchange resin. All anions are replaced by hydroxide (OH ) ions. There is no picture for this anion exchange, as it is very similar to the cation exchange picture in figure 5 above. At the end of the exchange process, the resin beads have loaded all cations and anions from the water and released H+ and OH

Selective Removal of Heavy Metal Ions from Waters and Waste

solutions of pH in the range 4-6. Also a combined process of cation exchange and precipitation is often applied for lead(II) removal form wastewaters (Pramanik et al. 2009). The average collection of lead by an adult was estimated at 320-440 mg/day. Acute poisoning with inorganic lead compounds occurs rarely. In the case of acute poisoning in

Ion-exchange separation of metals by a single-pass method

allowing the other to be collected in the effluent. An anion-or cation-exchange resin is used. Sulfosalicylic acid was used to form a negative complex with iron, uranium, aluminum, thorium, zirconium, and yttrium. Ethylenediamine was used to form a positive complex with copper, zinc, nickel or cadmium. Quantitative separations of binary

EUTRON ACTIVATION ANALYSIS

Separation schemes on a large num­ ber of elements have been studied in neutron activation analysis of semi­ conductors (21) and water (5). Other schemes have been studied for the sep­ aration of individual fission products in health physics research (6, 8). Also in these cases the range of elements studied does not cover many of the

Chemical Separation and Mass Spectrometry of Cr, Fe, Ni, Zn

Chemical Separation and Mass Spectrometry of Cr, Fe, Ni, Zn, and Cu in Terrestrial and cation-anion exchange chromatography and Eichrom nickel specific resin. The method was tested using a

Application of Anion Exchange Resin for the Separation of

exchange for separation and determination of the elements Uranium and other elements by cation exchanger. A. Zinc, and Nickel in ground water using ionic separation column

Common Cations, Anions, Acids, Salts and Hydrate Nomenclature

(Other group prefixes)(longest chain prefix)(highest bond root)(most important group suffix) Bond Order Name Drawn Root Formula Carbon Chain Prefix 1 Single C-C ane **C nH 2n+2 # Systematic Common 2 Double C=C ene C nH 2n 1 Methyl Formyl 3 Triple Other CC≡C yne C nH 2n-2 Carbon has 4 bonds In formula: Groups -1 H

A Review on Solvent Extraction of Nickel - IJERT

chromium, and zinc, to form alloys. These alloys are used to make coins, jewelry, and items such as valves and heat exchangers. Most nickel is used to make stainless steel [3]. Other uses of nickel are in electroplating and batteries and as a catalyst [4]. Nickel can combine with other elements compounds. Many nickel compounds dissolve fairly easy

BARC1448 - IAEA

oxine precipitates a large number of elements, quantitative separation from the other elements can be achieved by precipitation in acetic acid-acetate buffer at pH 5.8. About 0.2g of the sample was heated with about 5ml of conc.HN03 containing about 0.5ml of cone.H2SOA for about 40 minutes. The residue was dissolved in hot water. Aluminium was

Isotope Effects of Zinc in Crown Ether Chromatography

ethers and determined isotope separation factors for many elements such as lithium,9) nickel,10) zinc,11) strontium,12) and barium.13) In Nishizawa s work the odd atomic mass isotopes were enriched with quite different separation fac-tors from even atomic mass isotopes. He claimed that the ∗Corresponding author, Tel.&Fax. +81-3-5734-2958,

Investigating the Interaction of Silica and Earthworm on

other living organisms. Heavy elements (Cadmium, Chromium, Lead, Arsenic, Nickel, Cobalt and Zinc) produced as a result of major urban and industrial activities and have caused pollution of vast areas of the world [2]. Soil is the main source of mineral nutrition of plants. Plants are the first organisms that

Adsorption of Zinc from Aqueous Solutions Using Modified

found in the edges, bound to Si, Al or other octahedral cations [33]. It is widely known that there are three basic species of mineral clays: smectites (such as montmorillonite), kao-linite and micas, out of which montmorillonite has the highest cation exchange capacity, which sorption capa-bilities arise from the fact that mineral clays normally

TRACE HEAVY METALS REMOVAL WITH FERRIC CHLORIDE

amounts of lead, cadmium, nickel, chromium and zinc, from three different industrial wastewater streams. For wastewater from a metal picking facility, tests demonstrated that target chromium and nickel concentrations of 0.10 and 0.08 mg/l respectively, could not be achieved by lime precipitation or ion exchange.

Cobalt and Nickel Separation in Nitric Acid Solution by

and then selectively adsorbed by an anion exchange resin, while nickel is remains in solution as its cation. The drawback of this method is the high hydrochloric acid concentration of up to 9 molar required to form cobalt complex anion. Moreover, if other cations such as ferric, copper and zinc are present in solution, they will also form chloro

Simultaneous Separation and Quantification of Iron and

divalent cations of copper, nickel, zinc, cobalt, cadmium, and manganese [10]. The present study was primarily focused on the separation of iron species, as well as the detection and prevalence of organo-Fe species in natural waters. However, the separation of the other six transi- tion metals will also be described in this paper, and some

Application of Cyanex extractant in Cobalt/Nickel separation

ordinary cation exchange resins, chelating ion exchangers such as XFS4195, XFS4196 and XFS43084 can offer separation opportunities (Grinstead and Tsang, 1983). Separation of Ni and Co is possible by direct hydrogen reduction of Ni and Co loaded di-ethylhexyl phosphoric acid (DEHPA) solution. Ni can be selectively reduced in

PHYTOEXTRACTION OF METALS FROM CONTAMI- NATED SOIL: A REVIEW

cation exchange capacity (CEC) of the soil, the greater the sorption and immobilization of the metals. In acidic soils, metal desorption from soil binding sites into solution is stimulated due to H+competition for binding sites. Soil pH affects not only metal bioavailabilty, but also the very process of metal uptake into roots.

Soils fOr Management of Organic Wastes and Waste Waters

II. Exchange Reactions A. Cation Exchange B. Anion Exchange C. The Nature of Soil Acidity D. Effect of Excess Sodium and Soluble Salts E. Exchange Models F. Exchange of Metals III. Sorption and Precipitation Reactions A. Mechanisms and Equations B. Phosphate Retention C. Retention of Other Anions D. Retention of Metals IV.

Research of Radioisotope Production with Fast Neutrons, (VII)

2- Chemical Separation Ion exchange was mainly utilized for car­ rier-free separation. Diaion SA-100 was used as anion exchanger, and Diaion SK-1 as cation exchanger, both in mesh sizes between 100 and 200. ( 1) Separation of 21Na Sodium-24 formed in magnesium oxide was separated by passing 0.2 N hydrochloric acid

RESEARCH ARTICLE Open Access Salicylic acid functionalized

analysis, therefore, preconcentration or separation of trace elements from the matrix is frequently necessary in order to improve their detection and selectivity by F-AAS [13-16]. Different techniques are used for the separation and preconcentration of metals in the solution. These include liquid-liquid extraction, precipitation, cation-

Recovery of cobalt and nickel in the presence of magnesium

separation of nickel, cobalt, copper and zinc from manganese, magnesium, calcium and chloride was achieved. However, the synergist, decyl-4- pyridinecarboxylate ester, is not commercially available, which makes the novel process difficult to commercialize in the nickel industry.

Determination of Transition Metals by Ion Chromatography

Separation Hydrated and weakly complexed transition metals can be separated as cations on a cation exchange column. By adding a carboxylic acid chelating agent to the eluent, the net charge on the metal is reduced, since the carboxylic acids are anionic in solutions above their pKas. The selectivity of the separation is actually due to

The effect of hydrofluoric acid on the cation exchange

have studied almost all the elements on anion-exchange resin from solutions containing up to 12 M hydrochloric acid. Num­ erous separations can be devised using these data. Nelson ^ al. (15) have begun a systematic study of the cation-exchange behavior of metals in concentrated hydrochloric and perchloric acid solutions.

Amberlite IR 120 Cation Exchanger Mixed Matrix Membrane For

human beings and other living beings (Anusha, 2011). There are many methods have been proposed for removal iron ions from wastewater, including chemical precipitation, electrochemical reduction, ion exchange, adsorption, biosorption, membrane filtration, coagulation and flocculation. In the current study cation

Chemical Analysis of Industrial Water TABLE OF CONTENTS Part

Estimation of Nickel 225 12. Estimation of Zinc 225 13. Estimation of Magnesium and Calcium 226 14. Other Components 229 C. Systematic Analysis of Water-Formed Deposits 1. Preparation of the Solution for Analysis 232 2. Estimation of Silica 234 3. Solution of the Hydrofluoric Acid Residue 235 4. Separation of Cations from Anions by Ion Exchange 236