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The use of microalgae in biotechnological processes has received much attention worldwide. This is primarily due to the fact that they are inexpensive to grow, requiring only sunlight and CO 2 , whilst lending themselves to a range of uses, such as to reduce CO 2  levels, as fish feed, in biofuel production, for the generation of secondary metabolites of interest, and in bioremediation. These features mean that microalgae are excellent candidates for the implementation of a range of eco-friendly technologies. Here, we investigated the behavior and feasibility of the use of the microalgal strain  Tetraselmis marina  AC16-MESO against heavy metal contamination focused on potential use in bioremediation. The following key parameters were recorded: (i) the sedimentation efficiency, which reached 95.6% after five hours of decantation; (ii) the ion tolerance (Ca 2+ , Co 2+ , Cu 2+ , Fe 3+ , Mn 2+  and Ni 2+ ) at concentrations of 0.1, 1.0, 5.0, 10.0 and 20.0 mg*L −1  and (iii) ion removal efficiency (Cu 2+ , Fe 3+  and Mn 2+ ). Our results indicated a higher tolerance for iron and calcium (20 ± 1.10 mg*L −1 ; 100 ± 8.10 mg*L −1 ), partial to nickel, manganese and copper (4.4 ± 0.10 mg*L −1 ; 4.4 ± 0.15 mg*L −1 ; 5 ± 1.25 mg*L −1 ) and less for cobalt (0.1 ± 0.20 mg*L −1 ). Moreover, removal efficiency of 40–90% for Cu 2+ , 100% for Fe 3+ , and 20–50% for Mn 2+  over a 72 hours period, for ion concentrations of 1.0 and 5.0 mg*L −1 .

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The effect of heavy metals on the viability of <i>Tetraselmis marina</i> AC16-MESO and an evaluation of the potential use of this microalga in bioremediation

The effect of heavy metals on the viability of Tetraselmis marina AC16-MESO and an evaluation of the potential use of this microalga in bioremediation