Uranium carbonate industrial waste streams from a Brazilian nuclear production plant were treated by an ion exchange process using a Type II strong base anion exchange resin, IRA-910A with a dimethyl 2-hydroxy ethyl functional group . The stream needed to be boiled for 6 h to lower the total carbonate concentration before it could be treated.
Ion-Exchange Resins for Uranium Removal Type 1, macroporous, SBA Cl-1.0 resin, polystystrene-DVB matrix, 3)3 + exchange groups Strong-Base Anion exchange resin for uranium removal Ionac A-642 Purolite A-500 Amberlite IRA 900 Capacity meq/mL Ionic Form Resin Designation Description —N(CH
Radium Removal from Water by Manganese Dioxide Adsorption . These costs are competitive with ion exchange soften- ing for similar plant capacities. ^Ra, a member of uranium series, is a long-lived alpha emit- ter with a half life of This report on removing ra- dium deals with adsorbing radium onto MnO2 and mance of each process with actual radium- contaminated groundwater.
Uranium Removal from Aqueous Solution Using Ion-exchange Resin DOWEX® 2x8 in the Presence of Sulfate Anions December 2016 DOI: 10.5829/idosi.ije.2016.29.12c.06
Jan 01, 2009· SEPARATION SCIENCE AND ENGINEERING Chinese Journal of Chemical Engineering, 17(4) 585 593 (2009) Removal of Uranium (VI) by Fixed Bed Ion-exchange Column Using Natural Zeolite Coated with Manganese Oxide * ZOU Weihua ( / ) 1,ZHAO Lei ( $) 1 and HAN Runping ( . <) 2,3, ** 1 School of Chemical and Energy Engineering, Zhengzhou Univerity, Zhengzhou 450001, China 2
The removal efficiency ranges from 80 to 99% depending on the process used and concentration of uranium in the feed water. Our Technologies. Our CIF ® (continuous ionic filtration) technology can be used to reduce or remove uranium, using a strong base anion exchange resin to target uranium ions. The process uses physical filtration alongside ion exchange, which has the added
Removal of Uranium(Ⅵ)by Fixed Bed Ion-exchange Column Using Natural Zeolite Coated with Manganese Oxide 6.3.The Thomas model was applied to the experimental data to determine the characteristic parameters of the column for process design using linear regression.The breakthrough curves ZOU Weihua, ZHAO Lei, HAN Runping. Removal of
Mar 01, 2020· This type of silicon might be involved in the removal of U(VI), such as hydrolysis, ion exchange, or flocculation. The weakening of the signal of ferric group might be due to corrosion under acidic reaction conditions, especially in the process of uranium treatment. In addition, the signal strength of uranium was not detected due to detect limit.
Ion Resin System; Reverse Osmosis Systems. Reverses Osmosis aka RO System is like a water filter on steroids. It can remove a wide range of contaminants such as uranium from your water at the SUB-micron level (super small). The RO system contains special filters and a membrane that filter the uranium out of your water. Big RO or Little RO
Mar 29, 2018· Uranium recovery involves one of the following extraction processes. In a conventional uranium mine and mill, uranium ore is extracted from the Earth, typically through deep underground shafts or shallow open pits. The ore is transported to a mill, where it is crushed and undergoes a chemical process to remove the uranium.
@article{osti_624349, title = {Recovery of uranium from phosphoric acid solutions using chelating ion-exchange resins}, author = {Kabay, N and Demircioglu, M and Yayh, S and Guenay, E and Yueksel, M and Saglam, M and Streat, M}, abstractNote = {In fertilizer manufacture, calcium phosphate in phosphate rock is rendered soluble by sulfuric acid attack.
Uranium leaching is the process by which the uranium is extracted from the raw ore by reacting the material with acid or base. Fig. 2 shows a general process flow for the uranium extraction process. Prior to the leaching process, the ore is often given preliminary treatments that
Removal of Uranium(Ⅵ)by Fixed Bed Ion-exchange Column Using Natural Zeolite Coated with Manganese Oxide 6.3.The Thomas model was applied to the experimental data to determine the characteristic parameters of the column for process design using linear regression.The breakthrough curves ZOU Weihua, ZHAO Lei, HAN Runping. Removal of
addition, activated sawdust, man-made zeolite, ion-exchange resin and precipitation-air aeration-hydrated manganese hydroxide adsorption [3] can be used to remove the radium from uranium effluent. All uranium production countries have paid a lot attention to the treatment of uranium
1. Substances depressing uranium sorption: compounds which strongly compete with uranium for ion exchange sites. Common examples are vanadate, molybdate, chloride, and nitrate. 2. Substances fouling ion exchange resins: compounds which form inert deposits or salts inside and/or on the surface of ion exchange resins. Such deposits are not removed
consequently, should be removed by anion exchange through strong basic anionite (SBA) [4,5]. Studies carried out in the USA have proved that the best solu-tion for simultaneous removal of radium and uranium from water is filtration of water through SAC and SBA. An alternative to the ion exchange process is reverse osmosis [6].
Uranium processing Uranium processing Leaching: Roasted uranium ores are leached of their uranium values by both acidic and alkaline aqueous solutions. For the successful operation of all leaching systems, uranium must either be initially present in the more stable hexavalent state or be oxidized to that state in the leaching process. Acid leaching is commonly performed by agitating an
Nov 01, 2016· It is reported that MnO 2 is capable to capture numerous heavy metal ions via sorption, ion-exchange or coprecipitation,. Iron oxide nanoparticles, especially magnetite (Fe 3 O 4) and maghemite (γ-Fe 2 O 3), have been extensively applied in designing nano-adsorbents due to their large surface area and high magnetic susceptibility.
Ion exchange uses are not limited to process and boiler water makeup. Ion exchange can be used to purify, or polish, returned condensate, removing corrosion products that could cause harmful deposits in boilers. Typically, the contaminants in the condensate system are particulate iron and copper.
2.1.1 Ion Exchange Resin The as-received ion exchange materials were prepared by first centrifuge washing two times with deionized distilled (DD) water to remove any soluble contaminants accumulated during storage. Next, the resins were soaked in DD water for 2 hours to ensure proper hydration. After hydration, the excess
Ion exchange usually describes a processes of purification of aqueous solutions using solid polymeric ion exchange resin.More precisely, the term encompasses a large variety of processes where ions are exchanged between two electrolytes. Aside from its use to purify drinking water, the technique is widely applied for purification and separation of a variety of industrially and medicinally
This reveals the chemical adsorption process and its ion-exchange mechanism. FJSM-SnS has excellent pH stability in both strongly acidic and basic environments (pH = 2.1-11), with a maximum uranium-exchange capacity of 338.43 mg/g.
The use of the ion exchange resin rather than the uranium organic extractant in kerosene negates the need for an eluate (strip solution) scrub stage (step 6 in FIG. 2). The other parts of the uranium precipitation and recovery remain the same except that spent scrub solution from step 10 is forwarded directly to the precipitation stage (step 8).