Abstract
Global expansion has led to a surge in energy and resource consumption along with waste generation. Present energy demand is mainly fulfilled via the limited fossil resources, which has a perilous influence on the environment, and therefore, there is an urgent necessity for carbon-neutral energy resources. Owing to the metabolic flexibility, microalgae have gained significant consideration for the biorefinery concept. Microalgal-derived resources have a vast and propitious implementation in pharmaceuticals, nutraceuticals, renewable energy, and cosmetics. Microalgal cultivation has an extensive opportunity conversed in this communiqué. With the incipient progressions in current biotechnology, the prime emphasis is to develop microalgae to produce cost-effective high-value-added bio-renewables (HVABs). Microalgae have received substantial attention in emerging supportable substitutions. Microalgae belong to varied families and are utilized to generate biofuel feedstocks. These biomolecules are essential for commercial implication, an alternate for ameliorating the microalgal biorefinery economics. The present chapter discusses the various bioprocesses that can be implemented to produce energy and significant commodity chemicals in a unified way toward sustainability. The microalgae-based biorefinery method requires optimizing the individual bioprocesses’ cascade to alter the linear economy to circular bioeconomy. Here, the present status of microalgae HVABs, including innovative approaches for technologies amalgamation into a model for valorizing resources to attain new venture in generating sustainable biomass, biofuels, and bio-renewables has also been discussed.
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