ORIGINAL RESEARCH
Hydrothermal Synthesis of Zeolites from Polish Coal Fly Ash
Z. Adamczyk1, B. Białecka2
1 Instutute of Applied Geology, Silesian Technical University, 44-100 Gliwice, Akademicka St. 2, Poland
2 Central Mining Institute, 40-166 Katowice, Plac Gwarków 1 St., Poland
2 Central Mining Institute, 40-166 Katowice, Plac Gwarków 1 St., Poland
Pol. J. Environ. Stud. 2005;14(6):713–719
KEYWORDS
ABSTRACT
A method for the synthesis of NaP1-type zeolite and analcime from Polish fly ash derived from hard coal combustion in pulverized-fuel boilers is applied in this paper. The zeolite synthesis was performed from Opole Power Plant fly ash (Elektrownia Opole S. A.), which were activated with aq 3.6% Na2O (1.16 M NaOH) solution within 80 to 320°C. The NaP1-type zeolite and analcime crystallize at 120°C. As the synthesis temperature increases, the NaP1-type zeolite content rises, and for temperatures of 200 to 320°C the analcime share in the synthesis products becomes significant.
The synthesizing capability of zeolites from fly ash has a positive impact on utilization of wastes coming from solid fuel combustion by converting the fly ash into valuable raw material and, simultaneously, accomplishing the lithosphere protection effect.
The synthesizing capability of zeolites from fly ash has a positive impact on utilization of wastes coming from solid fuel combustion by converting the fly ash into valuable raw material and, simultaneously, accomplishing the lithosphere protection effect.
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