Jenny Rizkiana
In the first stage of the research, we focused on the preparation of coal and biomass as the feedstock for gasification. Coal and biomass have a great potential as an energy source to meet energy demand. Coal in Indonesia is dominated by low-ranked coal that has low energy value. While biomass namely empty palm fruit bunch (EPFB) is available in abundance has not been utilized to its maximum value. Co-gasification combines the high energy density in coal with low emission of biomass, due to alkali and alkaline earth metal (AAEM) contained in biomass, to get a synergy effect However, not all co-gasification results in a product that has a better outcome in terms of hydrogen yield in the synthesis gas compared to coal gasification alone. Furthermore, biomass ratio in the feed mixture affects the synergy effect of co-gasification of coal and biomass. Alumina and silica in coal inhibits catalytic effect that AAEM gives which can be removed by demineralization using acid solution. The aim of this study is to determine the effect of demineralization and feed mixing ratio of EPFB and lignite coal co-gasification. In conclusion, pre-treatment of coal demineralization using HF acid solution reduced the performance of co-gasification in terms of synthesis gas production and H2 gas yield, as well as increasing the production of char due to a significant decrease in coal reactivity so that it affected the overall catalytic effect of co-gasification.
Penerapan Karya Tulis
Coal and biomass have a great potential as an energy source to meet energy demand.