Parameters studied Nostocmuscorum
[(C0-C25)]/C0]×100
Anabaena variabilis
[(C0-C25)]/C0]×100
Lyngbyamajuscula[(C0-25)]/C0]×100 Oscillotoriasalina
[(C0-C25)]/C0]×100
pH 34.2 32 23.2 20
Calcium mg/l 40 17.5 28 44
Magnesiummg/l 43.4 28 36 51.2
Sulphate mg/l 57.4 55.4 65.2 70.3
COD mg/l 55.5 75.0 62.4 66.4
BOD mg/l 73 83.2 79.3 86
Nickel mg/l 74 63 76.1 76.1
Zinc mg/l 57 67 73 73.5
Table 6: Bioremediation efficiency of Nostoc muscorum, Anabaena variabilis, Lyngbya majuscule and Oscillotoria salina.