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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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