2 research outputs found
The Effect of Naoh Concentration and Temperature on Zeolite Synthetis From Fly Ash by Hidrothermal Alkali
Zeolite synthesis from coal fly ash PLTU Tanjung Jati Japara
was conducted by hydrothermal alkali. Preparation was done on fly-ash that has been refluxed with 1M of
HCl and without refluxed. NaOH with certain concentration (2, 3, and 4M) was mixed with coal fly-ash by
ratio 10 ml each 1 gram of fly ash into Teflon tube 100 ml at autoclave stainless-steel. Then, autoclave was
heated on the oven at temperature of 120-1600C. Synthetic zeolite ouput was qualitative tested by using
infrared spectroscopy, X-Ray diffraction, and SEM. The result showed that NaOH concentration,
temperature, and hydrothermal alkali period of coal fly ash was affecting characterization of zeolite ouput.
The temperature which use for optimally hydrothermal processes exist on range 140 –160oC. The increase
of temperature causes improving crystallization of zeolite products. Hydrothermal synthetic product from fly
ash is alumina-silica compound which are a mixture of some crystals such as P zeolite, Y zeolite, sodalite,
mullite, and quartz