Optimization of Corn Stover Gasification Used for Electricity and Hydrogen Production in East Lampung Regency, Indonesia

Abstract

Rapid industrial development and population growth increased the energy demand. However, electricity production produces emissions and is non-renewable, so energy development is executed to fulfill the energy needs and overcome climate change. Biomass from corn stover waste in East Lampung Regency, Indonesia, has excellent potential as energy with an abundant source, up to 623.93 tons in 2015, and has yet to maximize utilized. This research aims to produce electricity and hydrogen while reducing CO2 emissions by utilizing corn stover waste using gasification. This research was conducted by simulating using Aspen Hysys to determine the technology's operating conditions, efficiency, and feasibility. As a result, the mechanism is that corn stover biomass is put into a gasifier for drying at 150°C. Then, pyrolyzing at 500°C to separate the volatile materials from the charcoal while adding a CaO catalyst. Furthermore, CO2 and H2O are produced, which will be reduced by the gasifier and produce fuel gases to drive an electric generator and separated in a hydrogen tank. It shows effectiveness by 49.219%, can reduce 119,803.6 tCO2 emissions in 10 years, and turn it into electricity of 15,550.831 kWh and 34,363.69 liters of hydrogen.