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Table 1 Equilibrium isotherm parameters of the defluoridation process

From: Kinetic and thermodynamic studies for fluoride removal using a novel bio-adsorbent from possotia (Vitex negundo) leaf

PLP dose (g/L) Langmuir isotherm Freundlich isotherm Temkin isotherm
  a (mol/g) b (L/mg) R L 1/n K (L/g) B (J/mol) A T (L/g)
3 mg/L 6 mg/L 9 mg/L 12 mg/L 15 mg/L
1 10.75269 26.41938 0.01246 0.006269 0.004188 0.003144 0.002517 0.598 2.118361 5.583 1.395779
2 3.703704 5.577867 0.05639 0.029013 0.019531 0.01472 0.011811 0.532 1.08893 2.536 1.465255
3 3.067485 3.319789 0.091246 0.047804 0.032385 0.024487 0.019686 0.54 0.810961 1.734 1.562499
4 2.12766 2.067696 0.138829 0.074592 0.050996 0.038741 0.031235 0.504 0.656145 1.242 1.682087
5 1.550388 1.701852 0.163785 0.089197 0.061287 0.04668 0.037696 0.462 0.594292 0.948 1.902833