Table 1 Kinetic model parameters of Cr(VI) adsorption on PAMAMs-GO.

From: Adsorption mechanism of Cr(VI) onto GO/PAMAMs composites

C0 Pseudo-first-order Pseudo-second-order Intraparticle diffusion
mg/L k1 min −1 qe mg/g R2 k2 g.mg−1.min−1 qe mg/g R2 ki mg.g−1·min−1/2 C mg/g R2
50 0.0061 8.51 0.8880 2.58 × 10−3 46.36 0.9999 0.1948 41.164 0.9240
100 0.0041 14.20 0.8561 1.35 × 10−3 74.57 0.9996 0.3903 63.973 0.9529