When cow dung ash medium used as a cheap
nutrient growth medium for S. platensis biomass
production in lab conditions, the biomass of S.
platensis in 100% CDAM was lower as compared
to control. After formulating CDAM with CFTRI
medium at concentration levels 10% to 60%, best
biomass production of S. platensis obtained in 20%
formulated CDAM. The S. platensis biomass
obtained in 20% formulated CDAM was
nutritionally rich as contained 42% protein, 16.17%
carbohydrate and 0.023 mg/ml chlorophyll a
content. The protein content of S. platensis in
control was found 31% higher as compared to 20%
formulated CDAM. The carbohydrate content of S.
platensis was only 16.9% higher while FAN (free
amino acids) content was 34.6% higher in control
than in 20% formulated CDAM. The removal
efficiency of COD (83.64%) and TSS (98.06%)
was found very high after cultivating S. platensis in
20% formulated CDAM as compared to found in
CFTRI medium. The % removal of TDS andconductivity was comparable to the values of
standard medium.
The nutritional analysis of S. platensis grown in
20% formulated CDAM demonstrated that it is a
rich source of protein and carbohydrate. 20%
formulated CDAM yielded considerable cost saving
(20%) as compared to the CFTRI medium. 20%
formulated CDAM was not only less expensive
than CFTRI medium; even it was more effective
than CFTRI medium in the biomass production too.