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JPS57162642A |
PURPOSE: To produce an ion adsorbent which has high adsorption efficiency for heavy metal ions and is stable in high temp. water by forming and sticking a polymer or condensate of an oxyethylene chelating agent in the fine pores of activ...
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JPS57144080A |
PURPOSE: To suppress the degradation in the pH of the liquid to be treated that occurs in accordance with the adsorption reaction of oxine-stuck active carbon by purifying said liquid with the oxine-stuck active carbon and an anion excha...
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JPS5739811B2 |
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JPS5739822B2 |
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JPS5739246B2 |
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JPS5739185B2 |
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JPS5736909B2 |
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JPS5732048B2 |
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JPS5730131B2 |
An etherified phenolic chelate resin prepared by stabilizing and protecting the chelate groups of a phenolic chelate resin and then converting some or all of the phenolic hydroxyl groups into either groups; a process for the production o...
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JPS5728760B2 |
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JPS5728401B2 |
An ion exchanger is produced by reacting a substance containing carbon-to-carbon unsaturated double bond with a solution of iodine isocyanate in an organic solvent and then reacting the resulting isocyanate group added to said substance ...
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JPS5725253B2 |
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JPS5782349A |
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JPS5776013A |
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JPS5753239A |
Gold is selectively extracted from an aqueous solution by contacting the gold-containing solution, which may contain other metals, with a resin which is a diallylamine homopolymer or copolymer, and then separating the resin from the solu...
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JPS5710129B2 |
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JPS579848B2 |
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JPS578812B2 |
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JPS577778B2 |
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JPS576441B2 |
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JPS576448B2 |
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JPS575803B2 |
The invention provides novel oligomers and/or polymers containing carboxylic and hydroxylic groups - the latter groups being partially lactonized, if desired - and a predominant proportion of C-C bonds in their principal chain. The oligo...
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JPS5718690A |
A water insoluble ion exchange resin having a crosslinked, three dimensional resin skeleton and an active group of the formula: wherein R is selected from the group consisting of hydrogen and an alkyl radical having 1-15 carbon atoms and...
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JPS575249B2 |
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JPS5715843A |
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JPS577262A |
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JPS572055B2 |
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JPS5654386B2 |
Methods are provided for separating by-products from alkanolamine complexing agents and heavy metals complexed with alkanolamines, and for the waste-treating of solutions containing such complexed heavy metals and complexing agents. Illu...
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JPS5654009B2 |
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JPS5652617B2 |
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JPS5643778B2 |
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JPS5643779B2 |
PURPOSE:Process for separation of metallic ions in aqueous solution suited for recovering metals such as Cu, Co, Zn, Si, Ni, U from sea-water.
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JPS56130236A |
PURPOSE: To regenerate an imino-di-acetic acid type cation exchange resin having adsorbed silver ions in good condition without deteriorating the resin by subjecting the same to treatment by an aqueous copper nitrate soln. followed by tr...
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JPS56130499A |
PURPOSE:To remove silver ions efficiently by treating electro-deposition coating paint liquid contg. silver ions as an impurity by means of an iminodiacetic acid type cation exchange resin of which the specific number of exchange groups ...
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JPS5641673B2 |
An adsorbent process for heavy metals or heavy metallic compounds, which comprises utilizing a resin prepared by a reaction between aldehydes, dithiocarbamate compounds and aromatic compounds having at least one radical selected from the...
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JPS5641645B2 |
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JPS5641646B2 |
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JPS56111082A |
PURPOSE: To prolong the life of a chelate resin for adsorption of mercury on the liquid inlet side of mercury adsorption and removal treatment and make mercury leakage much lower by reactivating said resin through washing with a mineral ...
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JPS5635919B2 |
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JPS56102993A |
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JPS5634349B2 |
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JPS5695344A |
Ferric ions may be removed very selectively from aqueous solutions by means of a metal-chelating resin consisting of the acid-quaternized form of a cross-linked polymer produced by the condensation of a phenolic component comprising one ...
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JPS5690939A |
PURPOSE: To recycle a mixed soln. of a complexing agent and a complexing agent accepting agent as a complexing agent soln. for development or an accepting agent soln. by fractionating the mixed soln. flowing out of a development process ...
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JPS5631140B2 |
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JPS5631135B2 |
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JPS5627445B2 |
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JPS5627511B2 |
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JPS5627444B2 |
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JPS5627510B2 |
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JPS5627512B2 |
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