Obtaining biomass is an important step in the cultivation and production of bioproducts from microalgae. Electroflocculation is a separation method that consists of the immersion of two electrodes in the culture medium, where separation occurs through the migration of microalgae cells to the upper region of the container. The method is gaining importance due to low cost, energy efficiency, speed, and lack of need for chemical flocculants. In line with growing demand for low-cost microalgae harvesting methods for production of biomass with biotechnological application, this work aims to gather articles and patents related to microalgae electroflocculation. A total of 28 patents and 79 articles were found. The following trends were analyzed: year of publication and filing; depositing countries and countries of affiliation of the authors; main applicants; microalgae genera most studied; and factors that can influence process efficiency. Microalgae electroflocculation is still an infrequently studied topic that needs to be explored due to its great application potential.
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