Adsorption of hazardous ions from radioactive waste on chelating cloth filter

Reactor design for fluid-solid, noncatalytic reaction depends on the prediction of the performance of the reactor kinetically. Most mathematical models used to handle a fixed bed reactor in which the solid bed constitutes one of the reactants, while a second reactant is in the fluid phase, are complex and difficult to handle. A new mathematical model which is easier to handle has been developed to describe the system under investigation. The model was examined theoretically and experimentally. A column packed with a chelating cloth filter to separate radionuclides from radioactive waste solution is used as a practical application for the model. A comparison of the model predictions with the experimental results gives a satisfactory agreement at most of the process stages.

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“…The adsorption process, the composition of the complex formed, and the adsorption mechanism of U(VI) on CCF were also studied …”

Section: Methodsmentioning

confidence: 99%

Mathematical Simulation of Hazardous Ion Retention from Radioactive Waste in a Fixed Bed Reactor

Othman

Sohsah

Ghoneim

et al. 2006

Ind. Eng. Chem. Res.

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“…In uranium recovery experiments mainly grafted polyethylene was tested (Seko et al, 2005), however, the use of grafted cellulose-based polymers is also recommended (Badawy et al, 2005;Othman et al, 2006Othman et al, , 2009). In the slightly acidic/neutral pH range U(VI) ions are in the form UO 2 (OH) + and easily form chelate with amidoximated grafted polymers: U(VI) uptake is most effective at around pH 6.…”

Section: Adsorption Mechanism Binding Abilities and Practical Applimentioning

confidence: 99%

Radiation-induced grafting of cellulose for adsorption of hazardous water pollutants: A review

Wojnárovits

Földváry

Takács

2010

Radiation Physics and Chemistry

186

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“…Adsorption mechanisms of uranium from hazardous waste streams and the washing of ammonium diurnate using a new chelating cloth filter were presented. It was found adsorption by the filter increased as pH increased (Othman et al, 2006). Different blends of binding materials incorporating Cr, V and Si oxoanions into hydrocalumite in conjunction with ettringite for the stabilization / solidification of hazardous waste was investigated and reported.…”

Section: Assessmentmentioning

confidence: 99%