Insight into Equilibrium and Kinetics of the Binding of Cadmium Ions on Radiation-Modified Straw from Oryza sativa

Table 2

Comparison of capacity of UMRS with some other reported biosorbents.

Biomass	Biosorption capacity; (𝑞𝑚, mg g^−1)	Equilibrium model^a	Kinetic model^b	Reference
Sulfonated Juniperus monosperma wood	1.68	—	PSO	[42]
Juniperus monosperma	2.80	—	PSO	[42]
Zea mays	3.61		—	[43]
Coconut copra meal	4.92	L, RP	—	[44]
Nauclea diderrichii	6.30	L	PSO	[45]
Triticum aestivum (straw)	11.56	L	—	[21]
Triticum aestivum (straw)	14.56	L	PSO	[40]
Water Hyacinth	14.67	—	PSO	[46]
Papaya wood	17.22	L	PSO	[47]
Spent grain	17.30	L	—	[6]
Urea modified Oryza sativa	20.70	L	PSO	Present work
Rhizopus cohnii	40.50	L	—	[48]

aL: Langmuir model; RP: Redlich-Peterson model.
bPSO: pseudo-second-order model.