4. Conclusion
This work has studied biodiesel production
from microalgae. The purpose of this study is
to investigate the life cycle of 1,000 kg of
produced biodiesel. The results show that human
toxicity is the highest impact during biodiesel
production from microalgae. Heat and methanol
production are the main causes of human toxicity
impact, with 89% and 4.46% of the effect on
human toxicity coming from heat and methanol,
respectively. In addition, methanol makes the
highest impact on fossil depletion at 93%.
5. Acknowledgements
This research was supported by the
followings: Center for Petroleum, Petrochemicals
and Advanced Materials, Center for Advanced
Studies in Industrial Technology; Department of
Chemical Engineering, Faculty of Engineering,
Kasetsart University and the Graduate School,
Kasetsart University, Thailand.