oxide (N2O), and sulfur dioxide (SO2), which
are generated during heat production in
biodiesel production. Heat production is a main
cause of the environmental impact. It is
generated for producing heat to supply heat
exchangers as well as distillation columns.
Fossil depletion at 0.15 Pt occurs by using fuel
oil for methanol production to supply the biodiesel
production and diesel fuel is used for chemicals
transportation.
Methanol is the greatest impact of
biodiesel production since it can be investigated
as regards its impacts of acidification and
fossil depletion: analysis shows 35% and 93%,
respectively. Refrigerant and heat pump for
producing heat are causes of ozone depletion
at 0.02 Pt. As mentioned, these effects come
from methanol and heat production. This work
consistent with a work of Hou et al. [8] for
reducing the environmental impacts (human
toxicity, ozone depletion, climate change,
acidification, and fossil depletion) of biodiesel
production from microalgae.