The emissions of toxic compounds such as dioxins/furans and heavy metals have gained importance in the last few years due to the increasing combustion of residues. Since primary measures cannot achieve sufficient emission reduction, additional cleaning facilities have to be installed. This book compiles thirteen chapters about the aspects involved in the treatment of these emissions. In addition to the existing and planned emission regulations governing waste incineration in Spain and the EU member states, the fundamentals of adsorption for emission reduction and the more recent developments of waste gas cleaning processes, are discussed. Different contributions dealing with integrated adsorption show how novel developments in the field of process engineering can reconcile economy with ecology.