INCREASE IN CATION EXCHANGE CAPACITY OF COAL FLY ASH BY ALKALI TREATMENT

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概要

• 論文の詳細を見る

• Coal fly ash was treated with 3.5 M NaOH water solution by heating to 80-90℃ for 24 h. The alkali treatment caused an increase in cation exchange capacity (CEC) from 12-20 me/100 g to 158-360 me/100 g for the fly ash. X-ray powder diffraction analysis showed that hydroxy-sodalite, faujasite and phillipsite formed in the ash after the treatment. The formation of such zeolite was most likely responsible for the increase of CEC. It is possible to apply the zeolitized fly ash to material for soil amendment, removal of NH_4^+ and heavy metals from waste water, deodorization and moisture desorption. The present results may lead a technology for utilization or recycling of the waste coal ash.

• 日本粘土学会の論文

著者

• Henmi Teruo

  Department Of Agricultural Chemistry Faculty Of Agriculture Ehime University

• Henmi Teruo

  Department Of Agricultural Chemistly Faculty Of Agriculture Ehime University

関連論文

• ADSORPTION MECHANISM OF Pb ON PAPER SLUDGE ASH TREATED BY NaOH HYDROTHERMAL REACTUION
• INCREASE IN CATION EXCHANGE CAPACITY OF COAL FLY ASH BY ALKALI TREATMENT
• SYNTHESIS OF HYDROXY SODALITE ("ZEOLITE") FROM WASTE COAL ASH

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