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Report No.
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Development of paper sludge ash-based geopolymer and application to treatment of hazardous water contaminated with radioisotopes

Li, Z.*; Onuki, Toshihiko; Ikeda, Ko*

Geopolymer samples were prepared at room temperature using paper sludge ashes and immobilization of Sr and Cs in these samples were evaluated by short-term leaching test. The prepared geopolymer samples were semi-crystalline and porous. For the leaching test, the geopolymer samples containing 1 weight % of strontium nitrate or cesium nitrate were prepared, crushed to be finer than 4 mm in size, and immersed in a phthalic salt buffer (pH4) for 6 h. About 0.2% of Sr and 1.3% of Cs were leached from the geopolymer samples.

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Category:Materials Science, Multidisciplinary

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