A Water-Based Synthesis of Hybrid Silica/Hyperbranched Poly(ethylene imine) Nanopowder for Heavy Metal Sorption from Aqueous Solutions

Table 2

Sorption parameters for the Langmuir model.

Isotherm parameters	Pb	Cu	Zn
(mg/g)	833.3	502.5	193.4
(L/mg)	0.073	0.098	0.095
	0.9915	0.9908	0.9829
range	0.063–0.577	0.048–0.503	0.344–0.910