Dewatering and Drying Methods for Microalgae

Chen, Ching Lung; Chang, Jo Shu; Lee, Dong Hoon

doi:10.1080/07373937.2014.997881

Cited by 166 publications

(74 citation statements)

References 108 publications

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“…High temperatures are recognized to decrease the physical properties of microalgal cells, especially their ability to retain lipids, compromising the quality of the final product. On the other hand, low‐temperature methods, such as freeze drying, ensure greater stability regarding the lipids produced but can also disrupt cells and destabilize lipids during freezing …”

Section: Main Steps That Should Be Considered To Develop Cleaner Techmentioning

confidence: 99%

Microalgae and Clean Technologies: A Review

Souza

Hoeltz

Benitez

et al. 2019

CLEAN Soil Air Water

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The search for clean technologies needs to be continued to offer alternatives for achieving sustainable energy production and a sustainable economy. This concern is particularly related to the demands of both producing enough renewable energy to meet future needs and reducing greenhouse gas (GHG) emissions. Microalgae are recognized for several benefits they offer, and in recent years, the use of life cycle assessment (LCA) to evaluate the benefits resulting from microalgae cultivation, harvesting/dewatering, biomass drying, extraction, and byproduct development has stimulated research in this area. Considering the importance of microalgae and clean technologies and the increasing number of publications on these subjects, this review aims to perform bibliometric mapping of such studies from 2008 to 2018. Web of Science and Scopus databases are used to identify leading trends. Visualization of similarities viewer (VOSviewer) software is applied to analyze the interactions among keywords. The results of this study indicate an association of microalgae and clean technologies and demonstrate that LCA is one of the most common tools used for such analyses. Bibliometric mapping provides relevant data to reinforce this association and understand the main bottlenecks that must be overcome in this field for future progress to be made.

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Section: Main Steps That Should Be Considered To Develop Cleaner Techmentioning

confidence: 99%

Microalgae and Clean Technologies: A Review

Souza

Hoeltz

Benitez

et al. 2019

CLEAN Soil Air Water

View full text Add to dashboard Cite

show abstract

“…Moreover, most organic solvent and co‐solvent extraction methods require large volumes of chlorinated, flammable and/or volatile solvents to achieve high lipid yields, which could have significant environmental impacts including contamination of the aqueous waste stream and the impacts associated with solvent manufacture. Finally, residual water in microalgal slurries hinders the mass transfer of lipids from the microalgal cell, which decreases the efficiency of lipid extraction; energy‐intensive drying is usually performed to avoid this problem …”

Section: Lipid Extractionmentioning

confidence: 99%

“…Conventional lipid extraction methods require dried biomass because residual water hinders mass transfer of the lipids from the microalgal cell, which decreases the efficiency of lipid extraction. 16 Water removal requires two separate steps: dewatering, which is the removal of the microalgal biomass from the aqueous growth medium, and drying, which is the removal of water held within the biomass slurry. Although removing water from microalgal biomass improves lipid extraction efficiency, drying the biomass is energy intensive.…”

Section: Dewatering and Dryingmentioning

confidence: 99%

“…[19][20][21][22] Methods and challenges associated with dewatering and drying microalgae have been reviewed elsewhere. 16,23 Cell disruption Lipid recovery from microalgae, wet or dry, is often improved by implementing a cell disruption prior to or simultaneously with lipid extraction. Although cell disruption can be enhanced by changing cultivation conditions, a mechanical or chemical step is usually necessary to achieve sufficient cell lysis for lipid extraction.…”

Section: Dewatering and Dryingmentioning

confidence: 99%

“…A number of extraction methods that utilize microalgal slurries, and thus do not require complete drying of the microalgal biomass, have been developed in recent years . Methods and challenges associated with dewatering and drying microalgae have been reviewed elsewhere …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Advances in microalgal lipid extraction for biofuel production: a review

Harris

Viner

Champagne

et al. 2018

Biofuels Bioprod Bioref

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Algal biomass is an attractive feedstock for sustainable biofuel production because of its high growth rate and the fact that it does not compete with food crops. This review examines progress made in the processing and extraction of microalgal lipids as feedstocks for algae‐derived biofuels. The discussion focuses on lipid extraction processes but also mentions drying, cell disruption, and transesterification processes because of their potential effect on the extraction process, and because of the possibility of performing them simultaneously with extraction. Some of the common themes discussed include the benefits of utilizing wet microalgal biomass, combining process steps (process intensification), and the importance of considering the entire life cycle when assessing the ‘greenness’ of a technology. Lipid extraction technologies will need to be improved for microalgal biofuels to compete effectively with fossil fuels, particularly through the development of energy‐efficient extraction methods and the adaptation of these methods for large‐scale production. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd

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Algae to Hydrogen: Novel Energy‐Efficient Co‐Production of Hydrogen and Power

Aziz

Zaini

2017

Hydrogen Production Technologies

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Dewatering and Drying Methods for Microalgae

Cited by 166 publications

References 108 publications

Microalgae and Clean Technologies: A Review

Microalgae and Clean Technologies: A Review

Advances in microalgal lipid extraction for biofuel production: a review

Algae to Hydrogen: Novel Energy‐Efficient Co‐Production of Hydrogen and Power

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