Life cycle engineering (LCE) study for Synechococcus HS-9 biomass production as potential raw material for a third generation biodiesel production

The LCE study aims to reduce the environmental impact of the biomass production of Synechococcus HS-9. It is the main feedstock in producing biodiesel as a potential alternative fuel from using Indonesia's natural resources. The LCE study shows that the use of electricity and compressors contributed the highest to the environmental impact. Synechococcus HS-9 dry biomass production process affects the environment of 8.38x10(-9)Pt. The five significant impacts include Marine Aquatic Ecotoxicity Pot. (MAETP), Human Toxicity Potential (HTP inf.), Freshwater Aquatic Ecotoxicity Pot. (FAETP), Abiotic Depletion (ADP elements) and Global Warming Potential (GWP). The LCE design solution significantly reduces environmental impact by scenario changing electrical energy from State Electricity Company (PLN) using coal to electricity from renewable energy sources. On the other design solution, the best generation compressor scenario (new technology) can reduce the environmental impact by an average of 20% compared to the average generation compressor (current technology). The average GWP value is generated successively from the use of renewable energy, namely municipal waste energy at 7%, hydropower energy at 10%, onshore wind power at 7.05%, geothermal energy at 12.08%, PV at 13.84%, and natural gas at 50% of GWP value generated by the PLN electricity source using coal.