Life cycle assessment on a small scale tofu industry in Baturetno village - Bantu District - Yogyakarta

Abstract

Tofu is one of Indonesian traditional foods that is produced mostly by small medium scale industry. It is indicated by low production scale, inefficient in using production material and energy during the process. Baturetno village in Bantul district is center of tofu industries in Yogyakarta Province and is facing common problem such as lack of knowledge, inefficient using energy, using human labour, and no appropriate technology applied. This study is aimed to apply Life Cycle Assessment (LCA) for evaluating the process, waste and emission released to environment and is focused on Global Warming Potential (GWP). The LCA gate-to-gate was applied in a small-scale tofu industry, which had one worker, a production capacity 50 kg soybean/day, 6 working stations and used wood and electricity. For producing 1 kg fresh tofu it was needed energy from human, fuel, wood and electricity were needed for producing 1 kg fresh tofu 1.5269 MJ/kg and produced pollutant contributed as global warming potential of CO2, NOx, CO and CH4 totally 0.1766 kg CO2-equivalent.