Contact time (h)

Initial concentration (mg)

Dose (gm)

pH

Amount of phosphate adsorbed (mg/g)

Desirability

4.55

250

0.1

4.19

55.82

0.997

4.43

250

0.1

4.21

55.81

0.996

4.4

250

0.1

4.24

55.71

0.994