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 toxicity issues such as hair loss. Researchers collected samples from Khouzestan industrial factories and identified 73 bacterial isolates, with 8 showing resistance to selenate oxyanions. The isolate AMS1-S8, identified as belonging to the Enterobacter genus, demonstrated the highest resistance with a MIC of 600 mM and MBC of 1200 mM. It showed 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.