Hiromichi Aono, Ami Takahashi, Takumi Miyamoto, Yoshiteru Itagaki
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引用次数: 0
Abstract
The Na-P1 type zeolites were synthesized using coal fly ash (FA-Na-P1) and also using chemical reagents (CA-Na-P1) for comparison. Both Na-P1 type zeolites showed a superior adsorption ability for the non-radioactive metal ions of Cs, Sr, Mn, Zn, Co, or Fe, assuming radioisotopes with relatively long half-lives. These zeolites were heat-treated for the immobilization of the adsorbed metal ions in the decomposed zeolite. The elution ratio of the metal ions in the deionized water and seawater for 14 days showed a low elution when the sample was heated at 1000°C and higher temperature for both zeolites. In particular, the elution of the 1100°C heated sample for the zeolite from fly ash significantly decreased compared with that from the chemical reagents. The reaction between the adsorbed cation and zeolite was confirmed to form polymetallic oxide. The formation of the reacted oxide phase suppressed the elution ratio for the FA-Na-P1 zeolite.
期刊介绍：
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.
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