Cited by 60Algal biology and biofuel productionCoagulation and Flocculation StudiesAquatic Ecosystems and Phytoplankton Dynamics

Microalgal bio-flocculation: Present scenario and prospects for commercialization

Ray, Ayusmita, Banerjee, Sanjukta, Das, Debabrata·2021·Environmental Science and Pollution Research

Abstract

The need for sustainable production of renewable biofuel has been a global concern in the recent times. Overcoming the tailbacks of the first- and second-generation biofuels, third-generation biofuel using microalgae as feedstock has emerged as a plausible alternative. It has an added advantage of preventing any greenhouse gas (GHG) emissions with simultaneous carbon dioxide sequestration. Dewatering of microalgal culture is one of the many concerns regarding industrial-scale biofuel production. The small size of microalgae and dilute nature of its growth cultures creates huge operational cost during biomass separation, limiting economic feasibility of algae-based fuels. Considering the recovery efficiency, operation economics, technological feasibility and cost-effectiveness, bio-flocculation is a promising method of harvesting. Moreover, advantage of bio-flocculation over other conventional methods is that it does not incur the addition of any external chemical flocculants. This article reviews the current status of bio-flocculation technique for harvesting microalgae at industrial scale. The various microbial strains that can be prospective bioflocculants have been reviewed along with its application and advantages over chemical flocculants. Also, this article proposes that the primary focus of an appropriate harvesting technique should depend on the final utilization of the harvested biomass. This review article attempts to bring forth the beneficial aspects of microbial aided microalgal harvesting with a special attention on genetically modified self-flocculation microalgae.

Integrity signals

Registry

Crossref · 10.1007/s11356-021-13437-0

Cites

148 of 148 references verified0 citation errors · 0 not checkable

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  • Some microalgal species flocculate more readily than others.

    “with some species flocculating more readily than others [50].”

    From Key Targets for Improving Algal Biofuel Production (2021) · cites this paper as [50]

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Authors
Ray, A., Banerjee, S., & Das, D.
Affiliations
Indian Institute of Technology Kharagpur (IN)
Corresponding author
Das, Debabrata
Venue
Environmental Science and Pollution Research
Published
2021-04-02
Volume
28
Issue
21
Pages
26294-26312
ISSN
  • 0944-1344 (ISSN-L)
  • 1614-7499
OpenAlex
W3148412968
Cited by
60
References
148
Citations by year
2026: 9 · 2025: 18 · 2024: 13 · 2023: 5 · 2022: 9 · 2021: 5 · 2013: 1
FWCI
0.39
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Science and Pollution Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Department of Biotechnology, Government of India (BT/EB/PANIIT/2014)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
Keywords
microalgae harvesting, third-generation biofuels, bioflocculant, CO2 sequestration, commercialization potential
MeSH terms
Flocculation, Prospective Studies, Biomass, Biofuels, Microalgae

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