attention as a potential low-cost and passive-energy desalination technology, which could be a competitive solution to desalination in remote areas impacted by water shortages. As the first comprehensive review in this emerging research field, a systematic analysis of the published results from the relevant studies is presented, and algae salt removal mechanisms are summarized. It is suggested that both nonmetabolic biosorption and metabolic-dependent bioaccumulation make contributions to salt removal, but bioaccumulation had a relatively minor role and required a significantly longer time for the reaction compared to the biosorption process. To select the most appropriate algae species for an algae-based desalination process, salt acclimation and salt removal abilities are considered as the two key selection criteria.
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