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Biofuels

The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
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Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...

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Microalgae Cultivation and Biomass Quantification in a Bench-Scale Photobioreactor with Corrosive Flue Gases
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Published on: December 19, 2019

Microalgal immobilization methods.

Ignacio Moreno-Garrido1

  • 1Department of Ecology and Coastal Management, Institute of Marine Sciences of Andalucia (ICMAN-CSIC), Cádiz, Spain.

Methods in Molecular Biology (Clifton, N.J.)
|August 13, 2013
PubMed
Summary
This summary is machine-generated.

This review details microalgal immobilization techniques, highlighting calcium alginate entrapment as a preferred method for living cells due to its favorable properties. Other methods like synthetic foams and silica-based matrices are also explored.

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Area of Science:

  • Biotechnology
  • Microbiology
  • Environmental Science

Background:

  • Microalgae are increasingly utilized in various biotechnological applications.
  • Efficient methods for microalgal cultivation and harvesting are crucial for industrial viability.
  • Immobilization offers a promising approach to enhance microalgal stability and reusability.

Purpose of the Study:

  • To review and describe common microalgal immobilization procedures.
  • To differentiate between passive and active immobilization techniques.
  • To discuss the advantages of calcium alginate entrapment for living cell immobilization.

Main Methods:

  • Gathering and describing various microalgal immobilization methods.
  • Distinguishing between passive (natural adherence) and active immobilization.
  • Detailing techniques including calcium alginate entrapment, synthetic foams, agar, carrageenan, and silica-based matrices.

Main Results:

  • Calcium alginate entrapment is identified as the most widely used active method for living microalgal immobilization.
  • The chemical, optical, and mechanical properties of calcium alginate are key to its effectiveness.
  • Alternative immobilization strategies using synthetic foams, agar, carrageenan, and silica-based materials are also presented.

Conclusions:

  • Microalgal immobilization is a critical process with diverse methodologies.
  • Calcium alginate offers significant advantages for immobilizing living microalgal cells.
  • Further research into various immobilization matrices and flocculation techniques is warranted for optimizing microalgal applications.