Adsorption Ability for Toxic Chromium (VI) Ions in Aqueous Solution of Some Modified Oyster Shell Types

Table 10

Error analysis of R², SSE, MSE, and RMSE for Cr (VI) ions adsorption according to various kinetic models.

Model	R^2	SSE	MSE	RMSE
First-order	0.9434	0.03367718	0.00420965	0.06488180
Pseudo-first-order	0.9396	0.00000059	0.00000007	0.00027147
Second-order	0.9393	0.00107378	0.00013422	0.01158544
Pseudo-second-order	0.8307	152.38357709	19.04794714	4.36439539