The combined DeSOx-DeNOx-air toxics removal process using activated coke (AC) has been applied to flue gas cleanup: the DeSOx-DeNOx process for SOx-NOx-containing flue gas from coal boilers and the RFCC process; the DeNOx process for FBC boiler flue gas; and the DeNOx and toxics reduction process for refuse incinerator flue gas. Schematic process flow diagrams and AC performance data in DeSOx, DeNOx and air toxics removal in test plants are presented and discussed in this paper, for comparison with the basic laboratory test data presented in Part 1.