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Microalgae have several advantages over traditional oil-producing crops, such as a high rate of photosynthesis leading to faster cell growth and development, and high potential to produce biofuels and high-value by-products. Microalgae have robust environmental rigidity, no competition with food or agricultural land, rapid sequestration of environmental carbon, cultivation on wastewater, and time-round cultivation and harvesting. There are different groups of microalgae, colonized in different geographical areas, that retain different characteristics. Selection of an implicit microalgae species to produce its bulk biomass and fulfil the product target of a specific by-product is a challenge. To establish a microalgae production technology, there are several obstacles across the upstream and downstream processes. Researchers are searching for results to overcome the challenges in microalgae technology, especially for the biofuel product. In this endeavor, we have cultivated and characterized several microalgae species isolated from the Sabarmati River water, Ahmedabad, Gujarat, India. Among all, one of the microalgae shown to produce loftiest biomass and crude oil yield, ~2 g/L and ~1.3 g/L, respectively, in a modified artificial saline medium (ASM). The microalgae are identified as Micractinium reisseri after the molecular characterization. The analysis based on the FTIR, TLC, GC, and ELISA techniques demonstrated the importance of M. reisseri not only as an implicit feedstock for biofuels production but also for the generation of value-added by-products which have several advantages in areas like medicinals, neutraceuticals, bioplastics, bioethanol, and husbandry. The by-products generated from these processes can increase the eventuality for indirect frugality with zero destruction. The integration of M. reisseri cultivation in primarily treated municipal wastewater with anaerobic digestion, composting, and ethanol production processes provides a new model for climate change mitigation of biogenic CO2 and indirect frugality.

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Microalgae-Based Biofuel Generation, Value-Added Production and Bioremediation: An Implication for Sustainability and Circular Economy

  • 章节

  • 发表日期：

    2026年

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  • Sudha Sahay,
  • Brigita Jain,
  • Devanshi Trivedi,
  • Antony Suresh,
  • Shailesh Dave

摘要

Microalgae have several advantages over traditional oil-producing crops, such as a high rate of photosynthesis leading to faster cell growth and development, and high potential to produce biofuels and high-value by-products. Microalgae have robust environmental rigidity, no competition with food or agricultural land, rapid sequestration of environmental carbon, cultivation on wastewater, and time-round cultivation and harvesting. There are different groups of microalgae, colonized in different geographical areas, that retain different characteristics. Selection of an implicit microalgae species to produce its bulk biomass and fulfil the product target of a specific by-product is a challenge. To establish a microalgae production technology, there are several obstacles across the upstream and downstream processes. Researchers are searching for results to overcome the challenges in microalgae technology, especially for the biofuel product. In this endeavor, we have cultivated and characterized several microalgae species isolated from the Sabarmati River water, Ahmedabad, Gujarat, India. Among all, one of the microalgae shown to produce loftiest biomass and crude oil yield, ~2 g/L and ~1.3 g/L, respectively, in a modified artificial saline medium (ASM). The microalgae are identified as Micractinium reisseri after the molecular characterization. The analysis based on the FTIR, TLC, GC, and ELISA techniques demonstrated the importance of M. reisseri not only as an implicit feedstock for biofuels production but also for the generation of value-added by-products which have several advantages in areas like medicinals, neutraceuticals, bioplastics, bioethanol, and husbandry. The by-products generated from these processes can increase the eventuality for indirect frugality with zero destruction. The integration of M. reisseri cultivation in primarily treated municipal wastewater with anaerobic digestion, composting, and ethanol production processes provides a new model for climate change mitigation of biogenic CO2 and indirect frugality.