Biological Selenium Removal: The Solution to Pollution?

A new study funded by the European Union has demonstrated that unsafe levels of selenium, sometimes referred to as an "essential toxin", can be reduced by a microbiological treatment. With this method, microorganisms reduce selenate to the less-toxic elemental selenium, which can potentially be recovered from the process. An estimated 0.5 to 1 billion people worldwide suffer from selenium deficiency, even though many live near areas where levels of selenium have reached toxic levels.

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