Algae biomass cultivation has the potential to curb current climate change problems because algae absorb atmospheric carbon dioxide in the presence of sunlight to produce renewable biomass and oxygen. Algal biomass production requires various essential parameters such as balanced pH, optimum light intensity, carbon dioxide, water, optimum temperature range, and nutrients. Algae are mainly cultivated in two systems; open pond system (OPS) and closed photobioreactors (PBR). The OPS includes a wide spectrum of natural and human-engineered open water bodies where the growth parameters are provided but not controlled efficiently for example lakes, raceway ponds, and circular ponds. The closed photobioreactor is another algal biomass cultivation system in which growth parameters are controlled very efficiently and consequently, algal biomass production is well optimized per requirements. PBR have been widely adopted throughout the world and have categorized various types based on their external structure and internal specifications. Tubular (horizontal and vertical), flat plate, helical and vertical sieve (polybag) are well-adopted PBR. In addition, attached growth and air-lift PBR are also utilized for algal biomass production. Advantages and disadvantages of bioreactors are also discussed in the present study.

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Overview of Bioreactors for Algal Biomass Harvesting

  • Lavi Aluna,
  • Abdullahi Abdulkadir,
  • Har Mohan Singh

摘要

Algae biomass cultivation has the potential to curb current climate change problems because algae absorb atmospheric carbon dioxide in the presence of sunlight to produce renewable biomass and oxygen. Algal biomass production requires various essential parameters such as balanced pH, optimum light intensity, carbon dioxide, water, optimum temperature range, and nutrients. Algae are mainly cultivated in two systems; open pond system (OPS) and closed photobioreactors (PBR). The OPS includes a wide spectrum of natural and human-engineered open water bodies where the growth parameters are provided but not controlled efficiently for example lakes, raceway ponds, and circular ponds. The closed photobioreactor is another algal biomass cultivation system in which growth parameters are controlled very efficiently and consequently, algal biomass production is well optimized per requirements. PBR have been widely adopted throughout the world and have categorized various types based on their external structure and internal specifications. Tubular (horizontal and vertical), flat plate, helical and vertical sieve (polybag) are well-adopted PBR. In addition, attached growth and air-lift PBR are also utilized for algal biomass production. Advantages and disadvantages of bioreactors are also discussed in the present study.