Conversion of coal wastes into waste-cleaning materials. Quarterly progress report, April 1, 1996--June 30, 1996

Work on this project has concentrated on studying fly ash provided by PECO Energy. This ash has a composition, 52 wt% SiO{sub 2}, 30 wt% Al{sub 2}O{sub 3}, 10 wt% Fe{sub 3}O{sub 4}, and others. Previously, we have shown that this particular ash, which will be called Eddystone I, can be converted to faujasite and zeolite A at 38{degrees} C curing. In the last three months, we began to investigate whether the same treatment procedure can be applied to other ashes. Ashes from three different power plants were solicited and studied. In order to overcome the problem of wide variation in composition, a general approach needs to be found to treat different ashes. We adopted a fusion method that combines NaOH and silicon source more efficiently than simple dissolution of silicate in NaOH solution