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Effects of Aluminum Addition and Recycle of NaOH Waste Solution on the Quality of Zeolite Synthesized from Fly Ash  

Choi, Choong-Lyeal (Institute of Agricultural Science and Technology, Kyungpook National University)
Lee, Dong-Hoon (Department of Agricultural Chemistry, Kyungpook National University)
Park, Man (Department of Agricultural Chemistry, Kyungpook National University)
Song, Kyung-Sik (Department of Agricultural Chemistry, Kyungpook National University)
Rhee, In-Koo (Department of Agricultural Chemistry, Kyungpook National University)
Choi, Jyung (Department of Agricultural Chemistry, Kyungpook National University)
Kim, Jang-Eok (Department of Agricultural Chemistry, Kyungpook National University)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.38, no.2, 2005 , pp. 72-77 More about this Journal
Abstract
This study was performed to examine the effects of aluminum addition and recycle of NaOH waste solution on CEC and crystallinity of zeolite synthesized from fly ash. The added aluminum was used as the source of zeolite framework in zeolitization of fly ash. CEC and crystallinity of Na-P1 zeolite synthesized with aluminum addition were increased from 285 to $365cmol_c\;kg^{-1}$ and from 44.3 to 57.1% compared to that of simple hydrothermal treatment, respectively. The recycled NaOH solution did not affect the CEC of reaction products, though the crystallinity was decreased a little. Therefore, the additional supply of aluminum could improve the quality of zeolite synthesized from fly ash and the recycle of NaOH during zeolite synthesis can save the chemical without any adverse effects in the quality of synthesized seolite.
Keywords
Fly ash; Zeolite; CEC; Crystallinity; Aluminum; NaOH;
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