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Table 1

Adsorption model parameters of Cd2+ and Pb2+ for silty clay and soil colloids

EquationHeavy metal adsorptionParameterSilty claySoil colloid
Estimated valueEstimated value
Langmuir Cd2+ qmax (mg/g) 7.45 82.32 
KL (L/mg) 0.528 0.197 
R2 0.981 0.973 
Pb2+ qmax (mg/g) 27.17 120.06 
KL (L/mg) 1.72 2.64 
R2 0.929 0.970 
EquationHeavy metal adsorptionParameterSilty claySoil colloid
Estimated valueEstimated value
Langmuir Cd2+ qmax (mg/g) 7.45 82.32 
KL (L/mg) 0.528 0.197 
R2 0.981 0.973 
Pb2+ qmax (mg/g) 27.17 120.06 
KL (L/mg) 1.72 2.64 
R2 0.929 0.970 
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