TESTIMONY BEFORE THE U.S. SENATE COMMITTEE ON

0,05

MB

ENVIRONMENT AND PUBLIC WORKS on Status of Sorbent Injection

5

stron

Mercury Control Technology

2706

ID

ADA Environmental Solutions

2002

rok

I. Summary

Sorbent injection technology represents one of the simplest and most mature approaches to

controlling mercury emissions from coal-fired boilers. It involves injecting a solid material such as

powdered activated carbon (PAC) into the flue gas. The gas phase mercury in the flue gas contacts

the sorbent and attaches to its surface. The sorbent with the mercury attached is then collected by

the existing particle control device along with the other solid material, primarily fly ash. This

combined material is then either disposed of or beneficially used in building materials.