Bioresources and Bioprocessing

Table 6 Langmuir and Freundlich isotherms for the sorption of phosphate ions by B700MgCl₂

From: Potential use of Ulva intestinalis-derived biochar adsorbing phosphate ions in the cultivation of winter wheat Tristicum aestivum

Isotherm	Conditions	Parameter
Langmuir	pH 5, C₀ 0–100 mg/L, C_s 1 g/L	q_max 5.92 mg/g b 0.0111 L/mg R_L 0.796 R² 0.960
Langmuir	pH 5, C₀ 0–100 mg/L, C_s 10 g/L	q_max 12.0 mg/g b 0.271 L/mg R_L 0.0387 R² 0.905
Freundlich	pH 5, C₀ 0–100 mg/L, C_s 1 g/L	n 1.74 k_F 0.288 R² 0.476
Freundlich	pH 5, C₀ 0–100 mg/L, C_s 10 g/L	n 2.60 k_F 2.65 R² 0.747

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