Screening and Identification of Efficient Strain in Selenium Oxyanions Sorption for Biological Wastewater Treatment

The study aimed to isolate bacterial biosorbents to remove selenium contaminants from wastewater, addressing selenium's dual role as an essential element and a toxicant causing issues like hair loss. From 73 bacterial isolates, 8 were resistant to selenate oxyanions, with the AMS1-S8 isolate showing the highest resistance (MIC=600 mM, MBC=1200 mM). This isolate, identified as belonging to the Enterobacter genus, demonstrated greater sorption capacity in metabolically active samples compared to inactive ones. The study concluded that the active biomass of this isolate had the highest sorption capacity and removal efficiency, making it a promising candidate for bioremediation of selenium-polluted environments.