Microalgae Harvesting from Wastewater by Electroflocculation: Source for Biofuel Production

Author(s): López-Molina Antioco, Conde-Mejía Carolina*, Hernández-Martínez Prisciliano, Aguilar-Arteaga Karina, Rivera-Aguilar K. Zamara

Journal Name: Recent Innovations in Chemical Engineering
Formerly: Recent Patents on Chemical Engineering

Volume 11 , Issue 2 , 2018

Become EABM
Become Reviewer

Graphical Abstract:


Objective: Third generation biorefineries based on microalgae biomass seem to be a great potential to supply future fuel consumption. However, technological challenges must be faced; such as microalgae harvesting, which is one of the most important bottlenecks. Several technics have been proposed to harvest microalgae such as centrifugation, flotation, precipitation, among others. However, some of them have economical, technical or environmental limitations. In this work, electroflocculation is examined to harvest microalgae using wastewater as growth media.

Methods: The best conditions for current intensity, potential, electrodes material, electrolyte and resident time were determined by cyclic voltamperometry, for batch and continuous flow regimens.

Results: Through the results of the analysis, the anodic and cathodic reactions were determined and the electroflocculation process performance has been explained. It was observed that oxygen release from the anode contributes significantly to microalgae separation process.

Conclusion: Based on these results, it can be established that electroflocculation has a great potential, from a technical and economical point of view, to harvest microalgae.

Keywords: Electroflocculation, Desmodesmus maximus, microalgae harvest, wastewater, biomass, biofuels.

Rights & PermissionsPrintExport Cite as

Article Details

Year: 2018
Page: [90 - 98]
Pages: 9
DOI: 10.2174/2405520411666180430114340
Price: $65

Article Metrics

PDF: 16