Biosorptive Removal of Cadmium(II) and Copper(II) Using Microwave-Assisted Thiourea-Modified Sorghum bicolor Agrowaste

Table 4

Comparison of maximum removal capacities with reported biosorbents.

Biosorbent	Metal ion	qmax	Reference
Orange peels (nitric acid modified)	Cu (II)	15.27	[40]
O. sativa		12.36	[41]
Olive solid waste		3.81	[9]
P. longifolia leaf powder		1.74	[42]
Thiourea-modified Sorghum		15.15	Present study
T. aestivum (straw)	Cd (II)	14.56	[43]
Orange peels (nitric acid modified)		13.7	[40]
T. aestivum (straw)		11.56	[44]
Castor seed hull		6.98	[45]
Banana peels		5.71	[7]
A. hypogea shells		2.81	[46]
Thiourea-modified Sorghum		17.24	Present study