Synthesis of Poly(Ortho-Phenylenediamine) Fluffy Microspheres and Application for the Removal of Cr(VI)

Table 1

Sorption kinetic parameters.

Lagergren first-order kinetic model			Pseudo second-order kinetic model
𝑘1	𝑞𝑒1	𝑅^2	𝑘2	𝑞𝑒2	𝑅^2
0.0385	0.92	0.968	0.167	28.34	0.998