Table 1 Pseudo-first and second-order rate constants and correlation coefficients obtained for Cr6+ and Pb2+ adsorption on L-Cyst-Fe3O4 NPs.

From: Lead and Chromium Adsorption from Water using L-Cysteine Functionalized Magnetite (Fe3O4) Nanoparticles

Metals

Pseudo-first-order rate constants

Pseudo-second-order rate constants

k1

R2

k2

R2

Pb2+

0.08

0.9478

0.47

0.9850

Cr6+

0.08

0.8930

0.40

0.9611

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