The parameters of the conversion model for the single stage fed
with sodium bicarbonate were taken equal to those assumed for
the 2nd stage of the reference 2S facility (Table 5), which is actually
identical to a single stage NaHCO3 injection. Thus, the reactant consumption
was calculated imposing the same outlet value of HCl
concentration assumed for the 2S system (2 mg/N m3). The single
stage conversion required was calculated accordingly. Under these
assumptions, the costs related to the operation of the single stage
systems were estimated for the different waste composition
scenarios.