The potential use of agriculture pozzolan waste as supplementary cementitious materials by integrating with biomass

This population growth in Indonesia has an impact on the needs of various sectors such as electricity, construction and food. These three sectors are closely related to sustainable use contained in agriculture waste such as rice, oil palm and sugar cane. Rice production in Indonesia has reached 55.16 million tons, palm oil production reached 49.11 million tons and sugar cane reached 2.41 million tons. However, these products also contain biomass waste with a percentage of 22% rice husk, 6.5% palm kernel shell and 32% bagasse. The amount of waste reaches 16 million tons in the form of biomass. However, until now this waste has not been utilized properly, even though this waste has tremendous potential, namely as a pozzolanic material in powder form (ash) through a high temperature combustion process containing silica (Si) and alumina (Al) so that it can become a supplementary cementitious material (SCMs). Therefore, integration is needed between the potential for pozzolanic biomass waste and a Biomass Power Plant. This is in line with government programs that target the implementation of clean energy. Based on the calculation results, rice husks can produce electricity of 9708.16 GWh, 3256.66 GWh of palm shells, and 61.96 GWh of bagasse. Based on these results, if the three biomasses are integrated, it can be substituted for coal as fuel.