Simultaneous sulfur dioxide and mercury removal during low-rank coal combustion by natural zeolite.

Sulfur dioxide (SO) and trace metal such as mercury emission during combustion of low-rank coal cause a significant impact on the environment and health. Flue gas at coal-fired power stations is one of the main sources for the emissions of SO and mercury metal. Low-cost and sustainable technologies for the removal of SO and mercury from flue gas have become increasingly important nowadays.