| Abstrakt: |
The annual increase in Indonesia's population causes a rising demand for electrical energy, which reached 1,268 kWh/capita in 2022, representing an increase of 9.7% from 2020. This increase has led to an increase in power plants, where most of the power plants in Indonesia still use coal as fuel. Using coal as fuel produces fly ash as a by-product, whereas if it is not utilized and appropriately processed, it causes environmental problems. The utilization of fly ash in Indonesia is still low, with only 10-12% in 2019. Research shows that Fly Ash has the potential as a source of Si/Al for zeolite synthesis. However, using this fly ash depends on its characteristics that depend on coal and the combustion process. In this research, the initial characterization of fly ash from PLTU Tarakan has been carried out using XRD, XRF, and SEM-EDS. The analysis results show that Fly Ash from the Tarakan Power Plant is class C Fly Ash with a composition of SiO2 + Al2O3+Fe2O3 is 54.80% and CaO composition is 20.50%. The results of XRD analysis show that Fly Ash has a typical peak of quartz and calcite. This Fly Ash has potential as Si/Al precursor for zeolite synthesis type X, P, and A. [ABSTRACT FROM AUTHOR] |
