Solid type

Maximum adsorption capacity, C_SM (mg/kg)

Heterogeneity factor, 1/n

Control (CT)

120.45 (118.12, 123.54)

0.35 (0.32, 0.38)

Orange peel biochar (OB)

165.98 (164.78, 167.95)

0.58 (0.57, 0.60)

Chicken litter biochar (CB)

211.75 (209.52, 213.88)

0.79 (0.78, 0.82)

Tannery waste biochar (TB)

278.12 (275.82, 280.22)

0.90 (0.88, 0.91)

Algae (AG)

95.25 (94.12, 97.43)

0.32 (0.28, 0.33)

Orange peel biochar + algae (OB + AG)

110.58 (109.11, 112.07)

0.42 (0.41, 0.44)

Chicken litter biochar + algae (CB + AG)

160.37 (158.32, 162.59)

0.65 (0.64, 0.68)

Tannery waste biochar + algae (TB + AG)

220.54 (218.48, 223.71)

0.75 (0.74, 0.77)