
489Application of Green Catalysis and Processes
increase marginally from m = 2–4 g/L, thereafter they do not get affected signicantly
with the increase in m to 5 g/L. The increasing trend of COD reduction was observed with
increase in m during the preheating period (Figure 6.23).
Effect of Temperature: Percent COD and colour reduction as a function of reaction time
at different temperatures for CuSO
4
and ZnCl
2
catalysts (gures are not shown here). The
reaction temperatures were varied at 70°C, 85°C and 95 °C. It is observed that the % COD
and colour reduction rise as the temperature is increased from 70°C to 95°C. At 95°C %
COD reduction of ...