The Improvement of Natural Thai Bentonite Modified with Cationic Surfactants on Hexavalent Chromium Adsorption from an Aqueous Solution

Table 2

Parameters of the kinetic adsorption analysis.

Kinetic models	Adsorbent
	1CPC	1HDTMA
	40.70	43.69
Pseudo-first-order
	12.11	13.72
	0.0814	0.0939
	0.9683	0.9672
Pseudo-second-order
	41.17	44.14
	33.36	33.22
	0.02	0.02
	0.9997	0.9997
Intraparticle diffusion
	2.94	3.16
	19.32	20.58
	0.5080	0.5086