The edited book covers all potential products from microalgal-based biorefinery having the focus on contemporary technologies and future outlook. Along with the focus on microalgal biorefinery products, the book also focuses on biotechnological advances via the utilization of modern molecular biology, system biology, synthetic biology, or metabolic engineering approach in microalgal biorefinery. The development of any technologies has a direct effect on the human being and the environment, therefore, the socio-economic, techno-economic, and environmental impact of the microalgae-based biorefineries will also be included in the book. In microalgal biomass-based biorefinery different biofuel- biodiesel, bioethanol, bio-hydrogen, and value-added compounds such as carotenoids, fatty acids, and protein can be produced simultaneously. Understanding the technical advances to develop an integrated biorefinery approach with the motive of designing a consolidated self-sustainable microalga-based biorefinery. This book is equally beneficial for researchers and engineers in biomass-based biorefineries or the bachelors, master, or young budding graduate students as a textbook.