This book provides comprehensive coverage of developments in ion exchange areas which would continue to have major impacts in the general pursuit of pollution control and pollution prevention. Its nine chapters can be split into four different theme areas: trace contaminants removals; new materials; desalination and finally controlling gaseous pollutants. This would have value for practicing engineers, scientists and researchers who are pertaining to ion exchange technology. It would also server the needs of those trying to explore and identify new technologies in the areas of pollution control and pollution prevention.