Life cycle assessment on environmental feasibility of microalgae-based wastewater treatment for shrimp recirculating aquaculture systems

[Display omitted] •Microalgae treatment accounted for less than 10% of total environmental impacts.•Microalgae treatment was effective in reducing system’s MEP and FEP but not GWP.•Environmental impacts were sensitive to approach to solving multifunctionality.•Utilizing algal biomass for biogas production reduced system’s MEP.•Replacing coal with renewables in electricity mix reduced 90–99% of total impacts. This life cycle assessment (LCA) study analyzed the environmental consequences of integrating microalgae-based wastewater treatment into a shrimp farm with recirculating aquaculture systems (RAS). Microalgae treatment produced