After this, the COD/SO4 2 was changed to 5 and 1.5 respectively via adding Na2SO4 in order to test the COD/SO4 2 effect on the performance of the reactor (Phases III and IV).
After this, the COD/SO4 2 was changed to 5 and 1.5 respectively via adding Na2SO4 in order to testthe COD/SO4 2 effect on the performance of the reactor (Phases IIIand IV).