Tarbiat Modares University Journal of Agricultural Science and Technology 1680-7073 15 5 2013 09 01 Harvesting of Microalgae Dunaliella salina Using Electroflocculation 879 887 15253 EN A. Zenouzi Department of Agricultural Machinery, Faculty of Agriculture, Tarbiyat Modares University, Tehran, Islamic Republic of Iran. B. Ghobadian Department of Agricultural Machinery, Faculty of Agriculture, Tarbiyat Modares University, Tehran, Islamic Republic of Iran. M. A. Hejazi Agricultural Biotechnology Research Institute of Iran, Branch for North West and West, Tabriz, Islamic Republic of Iran. P. Rahnemoon Department of Food Science and Technology, Faculty of Agriculture, Tabriz University. Tabriz, Islamic Republic of Iran. Journal Article One of the important bottle-necks in production of microalgae based biodiesel is the lack of an efficient method for harvesting of microalgae from the culture medium. In this study, the electroflocculation method was developed for harvesting of microalgae Dunaliella cells from culture medium. The effect of several parameters such as the current density, electrical conductivity of culture medium, time, electrode gap, and electrode type on harvesting efficiency and energy consumption were also determined. The maximum harvesting efficiency of this method was 97.44% at EC= 1.35 S m-1 and current density of 90 A m-2 during 3 minutes electroflocculation process in a 300 ml beaker. The maximum efficiency was achieved by aluminum electrodes with 1 cm distance between electrodes and the maximum energy consumption for this practice was 0.621 kW h m-3. It was concluded that electroflocculation is an efficient and cost effective method for microalgae harvesting. https://jast.modares.ac.ir/article_15253_fe373c957b3a101282f9495e92eaf4ab.pdf