Abstract:
A method of chemically extracting radium-228, rare earth metals, thorium, the decay products of thorium, and phosphates from thorium-containing ores. The method involves breaking thorium-containing ore into fragments, wetting the fragments with a concentrated strong acid to make a slurry, heating the slurry, passing the heated solution through a first anion exchange column, retaining metals and radium-228 captured on the resin, allowing the radium-228 ions to decay to actinium-228, purifying the actinium-228 fraction, sending the actinium-228 fraction through a capture column, eluting the captured thorium-228 with acid, removing radium from the solution, retaining the radium-228 fraction for isomer in-growth, retaining decay products from the radium-228, separating the REEs from the process stream; and eluting and retaining the REEs.
Abstract:
The present invention is generally directed to a versatile fluid treatment system which includes: a mobile device; a track system connected to the mobile device; one or more treatment vessels removably attached to the track system, each treatment vessel comprising a treatment material disposed inside the treatment vessel, at least one fluid inlet, and at least one fluid outlet; an input conduit that receives a fluid to be treated, the input conduit in fluid communication with the fluid inlet on the treatment vessel; and an output conduit in fluid communication with the fluid outlet on the treatment vessel, the output conduit receives treated fluid from the treatment vessels via the fluid outlet.
Abstract:
Method of removing dissolved organic carbons from raw water, containing suspended and/or colloidal matter in a suspended ion exchange process, includes: feeding the water into a plug flow reactor at a rate of at least 500 m3/h, adding an anion exchange material to the liquid at the inlet of the reactor, suspending the anion exchange material in the water, transporting the water and the suspended anion exchange material under plug flow conditions to an outlet of the reactor after a predetermined residence time, feeding the water and the suspended anion exchange material to a separator and feeding treated water and anion exchange material from a reactor outlet to a separator, wherein the concentration of the anion exchange material in the reactor is smaller than 20 ml/l, and the residence time of the anion exchange material in the reactor is lower 30 minutes.
Abstract:
The invention relates to a method for producing a sorbent material, comprising firstly providing a porous silica substrate, said substrate comprising a plurality of silanol groups on a surface thereof then reacting said silanol groups with either a silicon compound of formula RnSi(OR′)4-n, where R is an alkyl group and n is 0 or 1, or an aminoalkyl silane of formula R″mRnSi(OR′)4-n-m having at least two hydrolysable groups attached to silicon, where R″ is an aminoalkyl group, m is 1 or 2 and n is 0 or 1s or a compound of formula M(OR′)4, or a mixture of any two or more of the preceding compounds, hydrolyzing the product, men reacting hydroxyl groups formed with one or more reagents, wherein each reagent is independently selected from the group consisting of an aminoalkyl silane having at least two hydrolysable groups attached to the silicon and a compound of formula M(OR′)4, and finally hydrolyzing the product, wherein each OR′ independently is a hydrolysable group and each M independently is Zr, Ti, Hf, Sn, Th, Pb or Ge. There is also described a sorbent material and use of a sorbent material for purifying, separating and concentrating processes.
Abstract:
The present invention is generally directed to a versatile fluid treatment system which includes: a mobile device; a track system connected to the mobile device; one or more treatment vessels removably attached to the track system, each treatment vessel comprising a treatment material disposed inside the treatment vessel, at least one fluid inlet, and at least one fluid outlet; an input conduit that receives a fluid to be treated, the input conduit in fluid communication with the fluid inlet on the treatment vessel; and an output conduit in fluid communication with the fluid outlet on the treatment vessel, the output conduit receives treated fluid from the treatment vessels via the fluid outlet.
Abstract:
Improvements are made in the process wherein Li + values are recovered from dilute aqueous solution by the use of an anion-exchange resin composite (C-1, C-2, C-3), containing crystalline LiX·2Al(OH) 3 , where X is halide. The improvements derive from enriching the Li +- containing solution with a non-competing metal salt (e.g., NaCl (S-1, S-2) prior to the Li + removal, thereby achieving higher Li + loading of the resin composite and obtaining more concentrated eluates. The non-competing metal salts that can be used are the chlorides, bromides or iodides of the alkali and alkaline earth metals.
Abstract translation:改进在工艺worin Li +的值从稀溶液wässrige通过使用阴离子交换树脂复合物含有结晶LiX.2Al(OH)3,其中X是卤化物的回收制成。 这些改进从富集与非竞争的金属盐(例如,NaCl)中之前,Li +的去除Li +的含水溶液,从而实现树脂复合体的高Li +的负荷和获得更浓缩的洗脱液导出。
Abstract:
The present invention is generally directed to a versatile fluid treatment system which includes: a mobile device; a track system connected to the mobile device; one or more treatment vessels removably attached to the track system, each treatment vessel comprising a treatment material disposed inside the treatment vessel, at least one fluid inlet, and at least one fluid outlet; an input conduit that receives a fluid to be treated, the input conduit in fluid communication with the fluid inlet on the treatment vessel; and an output conduit in fluid communication with the fluid outlet on the treatment vessel, the output conduit receives treated fluid from the treatment vessels via the fluid outlet.
Abstract:
Die Erfindung betrifft polymere Ammoniumverbindungen mit kieselsäureartigem Grundgerüst aus Einheiten in der R' und R 2 für eine Gruppe stehen, wobei R 5 eine Alkylengruppierung ist und die Sauerstoffatome durch Siliciumatome weiterer Gruppen (2), gegebenenfalls unter Einbau von Vernetzern, abgesättigt sind, R 3 und R 4 die Bedeutung von R' und R 2 haben oder für Wasserstoff, eine Alkyl-, Cycloalkyl- oder die Benzylgruppe stehen, X für ein 1- bis 3-wertiges Anion einer mit Aminbasen stabile Salze bildenden Protonensäure steht und x eine Zahl von 1 bis 3 sein Kann. Weitere Gegenstände der Erfindung sind Verfahren zur Gewinnung der polymeren Ammoniumverbindungen sowie die Verwendung dieser Stoffe als lonenaustauscher.
Abstract:
Formation of additional hydrous alumina in the reticules of a weak-base anion-exchange resin, where AlCl 3 has been precipitated as hydrous alumina by addition of ammonia, is achieved by subsequent treatment with HCI or NH 4 CI and HCI to convert the resin to the chloride form, thus increasing the reticular volume of the resin.