Reduction of environmental and energy footprint of microalgal biodiesel production through material and energy integration

► Process integration can decrease energy demand, GWP, water demand significantly. ► Energy demand is lowered by 3-12 GJ/ton-biodiesel through process integration. ► GWP can be lowered by 71% compared to petroleum fuel. ► Energy demand and GWP for integrated process are less sensitive to lipid content. ► GWP is increased with increase in lipid content (for substitution allocation).