Environmental Science and Pollution Research Pub Date : 2021-02-14 , DOI: 10.1007/s11356-021-12687-2 Elaine Fabre 1 , Mariana Dias 2 , Bruno Henriques 3 , Thainara Viana 2 , Nicole Ferreira 2 , José Soares 2 , João Pinto 2 , Carlos Vale 4 , José Pinheiro-Torres 5 , Carlos M Silva 6 , Eduarda Pereira 7
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Mercury is a very toxic metal that persists and accumulates in the living organisms present in the aquatic systems and its elimination is an urgent need. Two green (Ulva intestinalis and Ulva lactuca), brown (Fucus spiralis and Fucus vesiculosus), and red (Gracilaria sp. and Osmundea pinnatifida) marine macroalgae were tested for mercury removal from saline waters. The ability of each species was evaluated to the initial mercury concentrations of 50, 200, and 500 μg dm-3 along 72 h. In general, all species exhibited good performances, removing 80.9–99.9% from solutions with 50 μg dm-3, 79.3–98.6% from solutions with 200 μg dm-3, and 69.8–97.7% from solutions containing 500 μg dm-3 of mercury. Among the macroalgae, Ulva intestinalis showed the highest affinity to mercury and it presented an uptake ability up to 1888 μg g-1 of Hg(II) and bioconcentration factors up to 3823, which proved its promising potential on Hg removal.
Graphical abstract
中文翻译：
绿色，棕色和红色的海洋大型藻类从盐水中去除汞的生物累积过程
汞是一种剧毒金属，能持续存在并蓄积在水生系统中的活生物体中，因此迫切需要消除汞。测试了两种绿色的大肠藻（Ulva intestinalis和Ulva lactuca），棕色的海藻（Fusus spiralis和Fucus vesiculosus）和红色的海藻（Gracilaria sp。和Osmundea pinnatifida）对盐水中汞的去除作用。在72小时内，评估了每种物质对初始汞浓度分别为50、200和500μgdm -3的能力。一般而言，所有物种表现出良好的性能，从溶液中除去80.9-99.9％用50μg分米-3，79.3-98.6％从200微克DM解决方案-3和从含500μgdm -3汞的溶液中分离出69.8-97.7％。在大型藻类中，Ulva肠对汞的亲和力最高，其吸收能力高达1888μgg -1的Hg（II）和生物浓缩因子高达3823，证明了其去除汞的潜力。
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