Adsorptive Removal of Hexavalent Chromium by Diphenylcarbazide-Grafted Macadamia Nutshell Powder

Table 2

PFO and PSO kinetic parameters for adsorption of Cr(VI) by MHP and MHPD.

Parameters	20 MHP	35 MHP	50 MHP	20 MHPD	35 MHPD	50 MHPD
(mg/g)	18.11	18.96	22.5	58.77	56.89	56.81
(mg/g)	21.26	17.05	21.77	57.96	55.80	53.58
(1/min)	0.0107	0.0224	0.0325	0.1286	0.0644	0.151
	0.939	0.615	0.940	0.799	0.967	0.637
	41.71	14.04	11.24	0.40	5.93	0.780
(mg/g)	31.09	20.82	25.73	59.52	60.25	56.78
(g/mg min)	0.0025	0.00117	0.00147	0.0085	0.00198	0.00863
	0.942	0.725	0.936	0.896	0.881	0.887
	89.12	26.83	22.1	0.95	11.72	2.19