Separation and Recovery of Iodine from Aqueous Solution

Separation and Recovery of Iodine from Aqueous Solution

Separation and recovery of iodine (I2) in aqueous solution was achieved using permeation and chemical desorption (PCD) with a silicone rubber membrane (SRM). The SRM separated an aqueous feed solution from an alkaline or reducing recovery solution such as a mixture of sodium hydrate and sodium sulfate. The I2 crossed the membrane from the aqueous feed solution into the recovery solution, where it was converted into iodide (I–). Iodide in the recoveryJPH01108101A - Separation and recovery of iodine,Separation and recovery of iodine Info Publication number JPH01108101A. JPH01108101A JP26540587A JP26540587A JPH01108101A JP H01108101 A JPH01108101 A JP H01108101A JP 26540587 A JP26540587 A JP 26540587A JP 26540587 A JP26540587 A JP 26540587A JP H01108101 A JPH01108101 A JP H01108101A Authority JP Japan Prior art keywords alkaline alkali earth metal(PDF) Separation and Recovery of Iodine from Aqueous,,Separation a nd recovery of iodine (I 2) in aqueous solution was achieved using permeation and chemi- cal desorption (PCD) with a silicone rubber membrane (SRM ). The SRM separated an aqueous feed,Separation and Recovery of Iodine from Aqueous Solution,New technologies for iodine separation and recovery are required to decrease environmental pollution and improve iodine production. Separation and recovery of iodine (I2) in aqueous solution was achieved using permeation and chemical desorption (PCD) with a silicone rubber membrane (SRM). The SRM separated an aqueous feed solution from an alkaline or reducing recovery solution such as a,Separation and purification of radio-iodine using platinum,,01/11/1976· A new separation and purification method was developed for radioactive iodine using a column chromatographic technique using platinum coated copper (PCC) granules as the adsorbent. A dilute sulfuric acid solution containing the radioactive iodine isotope is passed through a small PCC column. The iodine is selectively retained and all other impurities pass through the column. The iodine(PDF) Separation Science and Technology A Potential,,At the same time, silver and palladium analysis of sam- for the recovery of gold from WPCB with iodine containing ples were made and the results were found to be below 1 ppm. solutions is suggested in Fig. 9. This study indicates that a double oxidizing-reagent leaching A big part of the hydrometallurgical studies performed with treatment using complex agents is effective for the selective iodine used as aRhodium and iodine recovery method - Celanese,A process for the recovery of rhodium and iodine values and the separation of rhodium from corrosion metal salts in the manufacture of acetic acid by the carbonylation of methanol wherein the reaction mixture contains from about none to about 20 wt % of water, from about 2 to about 20 wt % of lithium iodide, methanol, acetic acid, methyl iodide, and carbon monoxide which comprises: (1) removing at(PDF) Separation and Recovery of Iodine from Aqueous,,Separation a nd recovery of iodine (I 2) in aqueous solution was achieved using permeation and chemi- cal desorption (PCD) with a silicone rubber membrane (SRM ). The SRM separated an aqueous feed,Separation and Recovery of Iodine from Aqueous,New technologies for iodine separation and recovery are required to decrease environmental pollution and improve iodine production. Separation and recovery of iodine (I2) in aqueous solution was achieved using permeation and chemical desorption (PCD) with a silicone rubber membrane (SRM). The SRM separated an aqueous feed solution from an alkaline or reducing recovery solution such as a,Separation and Recovery of Iodine from Aqueous,Separation and Recovery of Iodine from Aqueous Solution by Permeation and Chemical Desorption (PCD) Using a Silicone Rubber Membrane By Jun Sawai, Hitomi Tomizuka, Naoki Hatanaka, Tamotsu Minami, Mikio Kikuchi and Toshimitsu Ishii

NDLI: Separation and Recovery of Iodine from Aqueous,

NDLI: Separation and Recovery of Iodine from Aqueous,

Separation and Recovery of Iodine from Aqueous Solution by Permeation and Chemical Desorption (PCD) Using a Silicone Rubber Membrane Separation and Recovery of Iodine from Aqueous Solution by Permeation and Chemical Desorption (PCD) Using a Silicone Rubber Membrane. Access Restriction Open. Use Rights URL . Author: Sawai, Jun ♦ Tomizuka, Hitomi ♦ Hatanaka, Naoki ♦ Minami, Tamotsu,Sulfur Dioxide Separation and Recovery with Ionic Liquid,,recovery with high purity. Figure 1. SO2/O2 separation process in Sulfur-Iodine Thermochemical Cycle and Hybrid Sulfur cycle NOVEL ABSORBENTS Ionic liquids are characterized as room temperature liquids with extremely low vapor pressures, high thermal and chemical stability. These characteristics are the most appropriate for SO2 separation H2SO4US3219409A - Recovery of iodine from aqueous,The combining of product cuts 3, 4, 5 and 6 indicated 1.64 grams iodine in a volume of 20.7 ml., or an average of 8.2 percent iodine with a maximum in cut 5 of 15.7 percent iodine. The ease of elution with one-normal caustic soda is noteworthy. As shown above, 93 percent of the iodineRhodium and iodine recovery method - Celanese,Rhodium and iodine recovery method 1. A process for the recovery of rhodium and iodine values and the separation of rhodium from corrosion metal salts in... 2. The process of claim 1 wherein after the methyl acetate is added, the mixture is heated to from about 130°-190° C. to... 3. The process of,US1944423A - Recovery of iodine - Google Patents,iodine acid solution pulverized Prior art date 1927-03-05 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US173221A Inventor Charles WSeparation of iodide, bromide, and chloride from one,,a pH of 1 the rate of reduction of iodine is negligible. If Lhe iodine formed is removed from the sol ution reaction (1) can go Lo completion. However, as th~ acidity is increased it is possible to oxidize a small amount of bromide to bromine (reaction 3) . Reac­ tion (4) is much faster than reaction (3) [ ), but asValidation of density separation for the rapid recovery of,,iodine(1.8gcm 3).13,14,23 Recently, NOAArecommendedtheuse of 5.4 M lithium metatungstate (1.62 g cm 3) for density sepa-ration.10 To ensure the separation of all plastic polymers from sediment brine solutions of a density of >1.45 gcm 3 have been recommended.1,15 However these higher density solutions are o en very expensive and toxic to the environment, reducing their practical use in larger,Separation and Recovery of Iodine from Aqueous,New technologies for iodine separation and recovery are required to decrease environmental pollution and improve iodine production. Separation and recovery of iodine (I2) in aqueous solution was achieved using permeation and chemical desorption (PCD) with a silicone rubber membrane (SRM). The SRM separated an aqueous feed solution from an alkaline or reducing recovery solution such as a,Separation and Recovery of Iodine from Aqueous,Separation and Recovery of Iodine from Aqueous Solution by Permeation and Chemical Desorption (PCD) Using a Silicone Rubber Membrane By Jun Sawai, Hitomi Tomizuka, Naoki Hatanaka, Tamotsu Minami, Mikio Kikuchi and Toshimitsu IshiiNDLI: Separation and Recovery of Iodine from Aqueous,,Separation and Recovery of Iodine from Aqueous Solution by Permeation and Chemical Desorption (PCD) Using a Silicone Rubber Membrane Separation and Recovery of Iodine from Aqueous Solution by Permeation and Chemical Desorption (PCD) Using a Silicone Rubber Membrane. Access Restriction Open. Use Rights URL . Author: Sawai, Jun ♦ Tomizuka, Hitomi ♦ Hatanaka, Naoki ♦ Minami, Tamotsu,

Determination of ultralow level 129I/127I in natural,

Determination of ultralow level 129I/127I in natural,

The recovery of iodine in the entire separation procedure is higher than 80% and 65% for solid and water samples, respectively. One microgram iodine in the target (AgI-AgCl) can produce a stable (127)I signal for AMS measurement of (129)I/(127)I, and a detection limit of this method for (129)I is calculated to be 10(5) atoms. This will allow us to accurately determine (129)I in prenuclear,US4036940A - Recovery of iodine - Google Patents,Iodine is recovered from a process stream containing it or iodine-containing compounds by passing said stream while in the vapor state in contact with a solid treating agent or adsorbent comprising alumina impregnated with the oxides of copper and chromium and thereafter subjecting said solid treating agent to heating to a temperature from about 400° to about 600° C while passing a stream containing air or oxygen over it. The resulting effluent gas containing iodineUS3219409A - Recovery of iodine from aqueous,The combining of product cuts 3, 4, 5 and 6 indicated 1.64 grams iodine in a volume of 20.7 ml., or an average of 8.2 percent iodine with a maximum in cut 5 of 15.7 percent iodine. The ease of elution with one-normal caustic soda is noteworthy. As shown above, 93 percent of the iodineSeparation of fission Iodine-131 - ResearchGate,of iodine 0.2M and 0.8 M sodium sulfide was used. 85-90% recovery was achieved with 90 ml of 0.8 M Na 2 S. Loss of Mo-99 was less than 1% [7].Separation of iodide, bromide, and chloride from one,,a pH of 1 the rate of reduction of iodine is negligible. If Lhe iodine formed is removed from the sol ution reaction (1) can go Lo completion. However, as th~ acidity is increased it is possible to oxidize a small amount of bromide to bromine (reaction 3) . Reac­ tion (4) is much faster than reaction (3) [ ), but asValidation of density separation for the rapid recovery of,,iodine(1.8gcm 3).13,14,23 Recently, NOAArecommendedtheuse of 5.4 M lithium metatungstate (1.62 g cm 3) for density sepa-ration.10 To ensure the separation of all plastic polymers from sediment brine solutions of a density of >1.45 gcm 3 have been recommended.1,15 However these higher density solutions are o en very expensive and toxic to the environment, reducing their practical use in larger,(PDF) Separation of fission Iodine-131 - ResearchGate,An initial separation of iodine isotopes diminishes radiation damage on ion-exchange resin used in the subsequent molybdenum purification, improving its retention and elution yield.,,,