GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya·BarcelonaTech, Jordi Girona 1-3, Building D1, 08034 Barcelona, Spain.
Department of Microbiology, School of Natural Sciences & Ryan Institute, National University of Ireland, University Road, Galway H91 TK33, Ireland.
Sci Total Environ. 2022 Dec 10;851(Pt 2):158337. doi: 10.1016/j.scitotenv.2022.158337. Epub 2022 Aug 27.
Selenium (Se) is an important element for many living organisms and its supplementation may be needed in food, feed, and soil to make up for its deficiency. At the same time, high selenium concentrations can harm the environment, thus its management in sewage and the study of its removal from waste streams are important. Microalgae-based systems may be used for wastewater treatment and nutrients recovery, while producing biomass for bioproducts or bioenergy. In this study, Chlorella vulgaris and Scenedesmus sp. grown in urban wastewater with different selenium concentrations (50-1000 μg Se/L) were evaluated for their resistance and selenium removal/recovery efficiency. Chlorella vulgaris and Scenedesmus sp. were able to remove up to 43 and 52 % of Se from wastewater, respectively. Chlorella vulgaris accumulated up to 323 mgSe/kg DW (in urban wastewater with 1000 μg Se/L). The Se-rich biomass produced may be applied to the supplementation of animal feed or used for biofortification of crops.
硒（Se）是许多生物的重要元素，其在食品、饲料和土壤中的补充可能是必要的，以弥补其缺乏。同时，高浓度的硒会对环境造成危害，因此对污水中的硒进行管理以及研究从废水中去除硒是很重要的。基于微藻的系统可用于废水处理和营养物质回收，同时生产生物制品或生物能源所需的生物质。在这项研究中，评估了在不同硒浓度（50-1000μg Se/L）的城市废水中生长的普通小球藻和栅藻对硒的抗性和去除/回收效率。普通小球藻和栅藻分别能够从废水中去除高达 43%和 52%的硒。普通小球藻在含 1000μg Se/L 硒的城市废水中积累了高达 323mgSe/kg DW。所生产的富含硒的生物质可用于补充动物饲料或用于作物的生物强化。
