Increased input of nutrients from both anthropogenic and natural sources often leads to severe problems with eutrophi-cation in rivers, lakes, and reservoirs. Certain strains of cyanobacteria that thrive during these algal bloom events produce toxins that can be released in substantial amounts and cause practical problems for drinking water treatment. In the 2010 top technology paper of EST, Yingping Huang and his colleagues (pictured in photo by Zhu Kui) at the China Three Gorges University and the Chinese Academy of Sciences introduced a new efficient method to eliminate one of the most commonly found cyanotoxin in water, microcystin-LR (MC-LR), by using a relatively new semiconductor material, bismuth oxybromide (BiOBr) as photocatalyst (Environ. Set. Technol. DOI 10.1021/ es103422i).
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