An Economic and Environmental Assessment for Microalgal Energy Systems

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Abstract

The superstructure modeling of microalgal energy system including cultivation, dewatering, harvesting, extraction, biodiesel production, gasification and power output is achieved by using Aspen Plus® and experimental data. To address the multi-objective optimization (MOO) of microalgal energy system with respect to e economic cost and life cycle assessment (LCA), the mixed-integer nonlinear programming (MINLP) is solved by GAMS ® . Bilinear relaxation is applied for the nonconvex constraints to reach the global optimum by using the piecewise bilinear relaxation convex envelope. Finally, a Pareto-curve graph for evaluating the trade-offs between environmental impacts and economic feasibility is successfully investigated.

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Po-Han, Wang, Chang, J. S., Wu, W., & Wu, E. (2017). An Economic and Environmental Assessment for Microalgal Energy Systems. In Energy Procedia (Vol. 105, pp. 3051–3061). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2017.03.633

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