3.1.1. Nitrogen removal
Nitrogen is one of the important compounds that are mainly
present in wastewater that exists in different forms viz., nitrite, nitrate and ammonium and that plays a vital role for survival
of microorganisms. The results of batch study conducted for
removal of Ammoniacal-nitrogen (NH3-N) are presented in
Fig. 2a and b for C. pyrenoidosa S. abundans. It can be noted
from Fig. 2a that the maximum removal of AmmoniacalNitrogen
(NH3-N) by C. pyrenoidosa cultivated in raw sample
with the inoculum size of 10% and 20% was observed as
99.46% and 99.3%, respectively, whereas, in autoclaved sample
with the inoculum size of 10%, it was observed as
98.86%. Similarly, it can be noted from Fig. 2b that the maximum
removal of Ammoniacal-Nitrogen (NH3-N) by S. abundans
cultivated in raw sample with the inoculum size of 10%
and 20% was observed as 98.68% and 94.6%, respectively,
whereas, in autoclaved sample with the inoculum size of
10%, it was observed as 91.66%.