1) Clean coal technology describes new electricity generation processes that are expected to have high efficiencies, be able to minimise environmental impacts, including SO2, NOx and CO2 emissions from coal fired power plants. Illustrate, with the aid of diagrams,
i) One of sulphur dioxide control technologies;
ii) One of NOx reduction technologies;
iii) Two of carbon capture and storage (CCS) technologies.
(Note: the impact on technical performance and costs due to various emission control technologies should be discussed).