Bioresources and Bioprocessing

Table 7 Intraparticulate diffusion parameters for the biosorption of Cu²⁺on Oxalic acid modified and raw Saccharum officinarum biomas

From: Bioremediation of Cu(II) contaminated water by Saccharum officinarum: effect of oxalic acid modification on equilibrium, kinetic and thermodynamic parameters

	Oxalic acid modified biomas					Raw raw biomas
C _o (mg L⁻¹)	100	200	300	400	500	100	200	300	400	500
K _1d (mg g⁻¹ min^−0.5)	8.31	16.92	24.12	31.58	41.31	6.29	11.79	18.23	21.28	26.71
C ₁ (mg g⁻¹)	2.38	4.82	9.24	13.37	12.17	1.59	3.59	4.80	10.15	11.58
R ²	0.971	0.968	0.944	0.931	0.97	0.989	0.978	0.986	0.952	0.966
K _2d (mg g⁻¹ min^−0.5)	0.47	0.80	1.52	1.42	1.28	0.32	0.94	0.91	1.87	2.00
C ₂ (mg g⁻¹)	41.03	84.12	120.27	156.20	199.82	34.38	66.15	103.59	123.90	149.49
R ²	0.811	0.869	0.955	0.83	0.962	0.891	0.883	0.687	0.813	0.861

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