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JPH06346165A |
PURPOSE: To easily refine uranium contg. molybdenum and to produce an yellow cake satisfying the specifications by bringing a uranium exudation liquid contg. molybdenum into contact with a chelating resin contg. a specified group. CONSTI...
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JPH0692446B2 |
The phosphoric acid based cholate resin of formula (I) or (II) for an absorbing uranium ion is prepared by the steps of: suspension copolymerization of styrene, divinyl benzene and bis-(2-chloroethyl)vinyl phosphonate at 40-100 deg.C for...
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JPH0689058B2 |
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JPH0686680B2 |
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JPH0686521B2 |
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JPH06298529A |
PURPOSE: To provide a process for removing nickel and cobalt from an aluminum solution containing traces of nickel, cobalt, etc. CONSTITUTION: An aluminum solution containing nickel, cobalt, etc., is made to contact with a sulfurizing ag...
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JPH06508338A |
A method for the removal, separation, and concentration of Rh, Ir, and/or Ru from a source solution which may contain larger concentrations of other ions including H+ comprises bringing the source solution into contact with a compound co...
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JPH0673635B2 |
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JPH0661465B2 |
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JPH0662699B2 |
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JPH0651743B2 |
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JPH0651748B2 |
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JPH0651744B2 |
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JPH0651567B2 |
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JPH0645654B2 |
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JPH0644074B2 |
A process for treating a waste water containing uranium and fluorine comprises a neutralizing precipitation step wherein slaked lime is added to the waste water containing uranium and fluorine and precipitate thus formed in separated and...
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JPH0643386B2 |
A process for purifying a peroxygen compound in an aqueous solution of a peroxygen-stable acid or salt of the acid, comprising contacting the aqueous solution at a pH of about 0.5 to 4 with a chelating ion exchange resin and separating t...
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JPH0635516B2 |
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JPH0633520B2 |
PURPOSE:To regenerate an aq. soln. essentially consisting of a phosphate and contg. Ni ions in such a manner that said soln. can be reused as it is by bringing the above- mentioned soln. into contact with a chelate resin adequately adjus...
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JPH06108169A |
PURPOSE: To recover metals of high purity by chromatographic sepn. by adsorbing anionic complexes of transition metal ions on an anion exchange resin, then lowering the complexing agent concn. in the soln. in accordance with different co...
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JPH0623051B2 |
PURPOSE:To recover rhenium in high efficiency at a low cost with simple process without necessitating complicate steps in contrast with conventional rhenium- recovery process, by contacting a rhenium-containing solution with a specific c...
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JPH0610089B2 |
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JPH068328B2 |
The invention relates to a process for the manufacture of ion exchange resins containing aminomethylenephosphonic acid groups by reacting macroporous aminomethylated crosslinked vinylaromatic resins with formaldehyde and phosphorus(III) ...
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JPH0617153A |
PURPOSE: To easily and economically recover metals from an org. complex contg. the metals by treating the org. complex with a weakly acidic aq. soln. of the chloride of alkaline metals or alkaline earth metals of a specific concn. CONSTI...
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JPH064139B2 |
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JPH0579398B2 |
The process consists firstly in adding, to the solution, an excess of a polyelectrolyte capable of forming an ionic association with the dissolved substance which it is desired to retain, and then in bringing the solution thus obtained i...
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JPH05271330A |
PURPOSE:To provide the subject pollution-free resin excellent in corrosionproofness, useful for metal surface treating agents, or coatings, having in the molecule plural number of specific chelate-forming groups. CONSTITUTION:The objecti...
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JPH0573692B2 |
PURPOSE:To simply separate and purify rare earth elements in a short time by densely packing a column with a fibrous ion exchanger contg. iminodiacetic acid groups and having high uniformity in shape, adsorbing rare earth metals on the i...
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JPH05239236A |
PURPOSE: To obtain resins having improved exchange kinetics, which comprise crosslinked copolymers having weak base exchange moieties and hydrophilic strong-base exchange moieties that are respectively substituted at specified two sites....
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JPH05506270A |
PCT No. PCT/BE91/00027 Sec. 371 Date Oct. 8, 1992 Sec. 102(e) Date Oct. 8, 1992 PCT Filed Apr. 3, 1991 PCT Pub. No. WO91/17274 PCT Pub. Date Nov. 14, 1991.Process for extracting Ge, Ga, In, As, Sb, Bi, Pt, Pd, Ni, and/or Co from an acid ...
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JPH05506043A |
PCT No. PCT/EP91/00467 Sec. 371 Date Jul. 28, 1992 Sec. 102(e) Date Jul. 28, 1992 PCT Filed Mar. 13, 1991 PCT Pub. No. WO91/16972 PCT Pub. Date Nov. 14, 1991.The invention relates to a process for preparing complex-forming ion exchanger ...
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JPH05212382A |
PURPOSE: To provide a method for selectively reducing the content of a heavy metal in a waste stream to sub-ppm level in the removal of a heavy metallic ion from the waste stream containing a complex anion. CONSTITUTION: An ion exchange ...
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JPH0557025B2 |
A method for eluting a metal adsorbed on a chelating agent with an eluent, which comprises using as the eluent an aqueous solution containing a water-soluble inorganic sulfide and a basic compound at concentrations of 0.005 to 3N and 0.1...
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JPH0557209B2 |
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JPH0556987B2 |
A process for removing heavy metal ions from the physiological fluids utilizing immobilized chelating agents is disclosed. The chelating agents are positioned on the opposite side of an ultrafiltration membrane from blood flowing across ...
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JPH05200315A |
PURPOSE: To obtain a novel cation exchanger for liquid chromatography by incorporating boric acid and/or its salt as a complex form in a hydroxyl group- contg. matrix. CONSTITUTION: Comlexed boric acid is used as a cation exchanger for l...
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JPH0550346B2 |
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JPH05186215A |
PURPOSE: To improve the purification efficiency by adding an aqueous solution of NaHCO3 to a crude aqueous solution of NaCl, carrying out the precise filtration and then treating the resultant filtrate with chelate resins. CONSTITUTION: ...
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JPH0546371B2 |
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JPH05504097A |
An ion exchanger for chromatographic separation has the structure P-S-A, wherein P is an insoluble support, S is a spacer, and A is a functional ligand. According to the invention the functional ligand A comprises two positively charged ...
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JPH05132565A |
PURPOSE: To provide a relatively simple process for converting nonuniform-size copolymer beads into an ion exchange resin showing a relatively narrow particle size distribution. CONSTITUTION: There is provided a process for producing an ...
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JPH0533246B2 |
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JPH0529607B2 |
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JPH0522647B2 |
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JPH0521846B2 |
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JPH0521033B2 |
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JPH0521032B2 |
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JPH0521123B2 |
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JPH0518845B2 |
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JPH0516312B2 |
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