Pollution reduction processes may be incorporated with, or retrofit to fit with, existing combustion processes to assist with the reduction of pollutants produced in the combustion process. The thermal treatment of oil shale in the pollution reduction process produces kerogen, shale sorbent particles, or mixtures thereof, which may be reacted with a pollutant-containing gas or pollutant-containing gas having particulate matter entrained therein to reduce the pollutants in the gas. Apparatuses employing the processes are also disclosed.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 The United States Government has certain rights in this invention pursuant to Contract No. DE-AC07-05-ID14517 between the United States Department of Energy and Battelle Energy Alliance, LLC.