Sorption of radiocobalt on pottery
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Abd-Allah A. Helal
Summary
Removal of the radioactive tracer 60Co from solution using pottery and its raw material (potter's clay) was studied at different conditions. The results confirmed that pottery (as a natural cheap material) has a high ability to sorb the radiotracer. The rate of sorption was found to increase with increasing surface area of the sorbent, shaking time, amount of sorbent and pH of the aqueous solution. The sorption by the potter's clay material was found to be slightly higher than the pottery, because of the presence of humic, and other organic, materials. The capacity of the sorbents for the sorption of Co2+ was found 10.35, 9.68, mmole metal/g sorbent for raw and pottery, respectively. The sorption behavior is described by a Freundlich type isotherm, within the experimental Co2+ concentrations used. The sorption mechanism was suggested to occur via adsorption and ion exchange.
By using a pottery container (pot) as a filtering device, low level radioactive waste solution containing 60Co + (152,154)Eu or 60Co + (152,154)Eu + 65Zn were completely decontaminated.
© Oldenbourg Wissenschaftsverlag, München
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Artikel in diesem Heft
- Effect of aqueous acetic, oxalic and carbonic acids on the adsorption of americium onto α-alumina
- Thorium reactions in borosilicate-glass/water systems
- Removal of cesium from alkaline waste solution: Part I – Batch ion exchange study
- Removal of cesium from alkaline waste solution: Part II – Column ion exchange study
- Sorption of radiocobalt on pottery
- Kinetic and thermodynamic investigations of strontium ions retention by natural kaolinite and clinoptilolite minerals
- Air quality evaluation of some industrial cities of Pakistan using INAA and AAS
