[Retracted] Preparation of Alumina Nanoparticles and Coating with Polyvinylpyrrolidone to Treat Cadmium Contamination of Water

Table 3

The amount of cadmium that was adsorbed with the change of the acidity function and the immersion time in a solution of 60 ppm.

pH	Capacity
	Time 10 (min)	Time 30 (min)	Time 60 (min)
2	5.92	6.61	8.76
4	5.08	5.54	6.26
6	3.50	4.61	5.54