Table 4.

Thermodynamic parameters for the adsorption of p-nitrophenol onto biochar samples obtained at different pyrolysis temperatures.

Sample	lnK	T (K)	ΔG (kJ/mol)	ΔH (kJ/mol)	ΔS (J/(mol∙K))
PC300	1.5240	288	−3.6491	13.068	49.908
	1.7410	298	−4.3136
	1.8776	308	−4.8081
PC400	2.2470	288	−5.3803	17.309	78.503
	2.3841	298	−5.9071
	2.7187	308	−6.9622
PC500	2.7548	288	−6.5964	25.747	112.913
	3.3407	298	−8.2768
	3.4480	308	−8.8294
PC600	1.8776	288	−4.4959	37.218	144.799
	2.3841	298	−5.9071
	2.8873	308	−7.3936
PC700	2.1546	288	−5.1591	42.337	164.577
	2.6225	298	−6.4977
	3.3056	308	−8.4647