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Related Experiment Video

Updated: Feb 12, 2026

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
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Microalgae harvesting techniques: A review.

Gulab Singh1, S K Patidar1

  • 1Department of Civil Engineering, National Institute of Technology, Kurukshetra, Haryana, India.

Journal of Environmental Management
|April 10, 2018
PubMed
Summary

Harvesting microalgae is costly, hindering economic viability. This review compares techniques like coagulation, flocculation, centrifugation, and filtration to find cost-effective solutions for various applications.

Keywords:
BiofuelCentrifugationCoagulation and flocculationHigh valued productsMicroalgae harvestingWater quality restoration

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Area of Science:

  • Biotechnology
  • Environmental Science
  • Chemical Engineering

Background:

  • Microalgae cultivation has expanded due to diverse commercial applications.
  • High harvesting costs currently limit the economic sustainability of microalgae utilization.
  • Efficient solid-liquid separation is crucial for cost-effective microalgae harvesting.

Purpose of the Study:

  • To review and assess various microalgae harvesting techniques.
  • To evaluate the technical, economic, and application potential of different methods.
  • To guide the selection of appropriate technologies for cost-effective microalgae harvesting.

Main Methods:

  • A comprehensive review of microalgae harvesting and concentrating techniques.
  • Comparative analysis based on biomass quality, cost, quantity, processing time, species specificity, and toxicity.
  • Suitability assessment for applications including biofuel, food, high-value products, and water restoration.

Main Results:

  • No single universal microalgae harvesting technique exists.
  • Coagulation and flocculation, centrifugation, and filtration emerged as the most suitable techniques.
  • These methods can be employed individually or in combination to enhance harvesting efficiency.

Conclusions:

  • The selection of microalgae harvesting technology depends on specific application requirements and economic factors.
  • Optimizing harvesting processes is key to unlocking the full commercial potential of microalgae.
  • Further research into combined techniques can improve overall efficiency and reduce costs.