. 2024 Jan 17;9(4):4300–4316. doi: 10.1021/acsomega.3c05321

Table 3. Thermodynamic Variables for Basic Brown 1 (BB₁) and Basic Orange 2 (BO₂) Dye Adsorptions by Fe₃O₄-Impregnated C. bonplandianus Biochar.

dye	temperature (°C)	ΔG⁰ (kJ mol^–1)	ΔH⁰ (kJ mol^–1)	ΔS⁰ (J K^–1 mol^–1)
BB₁	20	3.247	49.386	157.326
	30	2.106
	40	–0.545
	50	–1.088
BO₂	20	3.247	59.0701	190.253
	30	2.106
	40	–1.6702
	50	–1.795

Table 3. Thermodynamic Variables for Basic Brown 1 (BB1) and Basic Orange 2 (BO2) Dye Adsorptions by Fe3O4-Impregnated C. bonplandianus Biochar.