Effects of Weathering Processes on Radioactive Cesium Sorption with Mineral Characterization in Korean Nuclear Facility Site

The selective sorption of radioactive cesium and strontium on Pillared Layered Clays was investigated. Two reference samples were initially used in experiments, both in vitro and in vivo. An improved nanocomposite-pillared clay with different organization and structural evolution of its building blocks, was constructed, characterized by several methods and employed in exchange experiments. The results derived from the improved material administration in ruminants for strontium and cesium sorption were positive and further investigation is under way.

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Weathering processes

AccessScience ◽

10.1036/1097-8542.743100 ◽

2015 ◽

Keyword(s):

Weathering Processes

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Soils radiological characterization under a nuclear facility

Revue Générale Nucléaire ◽

10.1051/rgn/20125052 ◽

2012 ◽

pp. 52-60

Author(s):

Emilie Aubonnet ◽

Didier Dubot

Keyword(s):

Nuclear Facility ◽

Radiological Characterization

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New Technologies for Decontamination of Radioactive Substances Scattered by Nuclear Accident / Nowe Technologie Dekontaminacji Radioaktywnych Substancji Rozproszonych Przez Awarie Nuklearna

Archives of Metallurgy and Materials ◽

10.2478/v10172-012-0186-1 ◽

2013 ◽

Vol 58 (1) ◽

pp. 283-290 ◽

Cited By ~ 4

Author(s):

Y. Nishizaki ◽

H. Miyamae ◽

S. Ichikawa ◽

K. Izumiya ◽

T. Takano ◽

...

Keyword(s):

Radioactive Waste ◽

New Technologies ◽

Ferric Hydroxide ◽

Nuclear Accident ◽

Radioactive Cesium ◽

Cesium Ions ◽

Naoh Solution ◽

High Concentrations ◽

Water Rinsing

Our effort for decontamination of radioactive cesium scattered widely by nuclear accident in March 2011 in Fukushima, Japan has been described. Radioactive cesium scattered widely in Japan has been accumulating in arc or plasma molten-solidified ash in waste incinerating facilities up to 90,000 Bq/kg of the radioactive waste. Water rinsing of the ash resulted in dissolution of cesium ions together with high concentrations of potassium and sodium ions. Although potassium inhibits the adsorption of cesium on zeolite, we succeeded to precipitate cesium by in-situ formation of ferric ferrocyanide and iron rust in the radioactive filtrate after rinsing of the radioactive ash with water. Because the regulation of no preservation of any kind of cyanide substances, cesium was separated from the precipitate consisting of cesium-captured ferric ferrocyanide and ferric hydroxide in diluted NaOH solution and subsequent filtration gave rise to the potassium-free radioactive filtrate. Cesium was captured by zeolite from the potassium-free radioactive filtrate. The amount of this final radioactive waste of zeolite was significantly lower than that of the arc-molten-solidified ash.

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Developmental Characteristics and Weathering Processes of Tafoni at Mt. Buheung, Mokpo, South Korea

Journal of The Korean Association of Regional Geographers ◽

10.26863/jkarg.2019.5.25.2.195 ◽

2019 ◽

Vol 25 (2) ◽

pp. 195-206

Author(s):

Kyung Geun Park ◽

Jae Ryul Shin

Keyword(s):

South Korea ◽

Weathering Processes ◽

Developmental Characteristics

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Superposition of Potential Chemical Polluants and Radioisotopes and Their Influence Upon the Environment and Living Organisms

Revista de Chimie ◽

10.37358/rc.17.9.5853 ◽

2017 ◽

Vol 68 (9) ◽

pp. 2189-2195

Author(s):

Valeriu V. Jinescu ◽

Simona Eugenia Manea ◽

George Jinescu ◽

Vali Ifigenia Nicolof

Keyword(s):

Solid Waste ◽

Critical Energy ◽

Radioactive Isotopes ◽

Nuclear Facility ◽

Chemical Pollutants ◽

Living Organisms

Following the activities developed in a nuclear facility result gaseous and liquid radioactive effluents and radioactive solid waste. All these waste contain radioactive isotopes which are potentially pollutants for the environment. In the same time chemicals are, also, pollutants. According to the legislation, discharging of chemicals and radioactive liquid and gaseous effluents into the environment, should meet the requirements of the unrestricted discharge. However, what happens when several pollutants superpose: only chemical pollutants, or only radioactive pollutants, or chemical and radioactive pollutants? Such problems have been solved in this paper on the basis of the principle of critical energy.

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