Possible Monitoring and Removal of As(III) by an Integrated System of Electrochemical Sensor and Nanocomposite Materials

Table 2

Adsorption/desorption behavior of 5%-PAni/MNPs (1 g) toward the initial 1 l As(III) solution 0.1 ppm after adsorbing and washing 5 times, at 25°C and agitation.

Try	Adsorbed As %	Released As %	Released Fe (mg/L)
			Bare MNPs	PAni/MNPs
1	93.79	55.25	45.5	20.5
2	92.61	53.27	61.3	15.7
3	88.22	49.72	100.7	11.8
4	82.74	51.16	255.2	10.5
5	77.63	49.20	382.8	10.7

Adsorption process in pH = 5; desorption process in arsenite-free solution pH = 3; measured by AAS.