Table 5. Isothermal adsorption model of VOCs on biochar

Feedstock		VOCs	Carbonization temperature (℃)	Isothermal adsorption model	Adsorption capacity (mg/g)	Ref.
Wood and waste wood	Pine wood sawdust	AcetoneToluene	300500700	Pseudo-second-order model	218116210	[11]
					4786121
	Hickory wood	Acetone	300450600	Pseudo-second-order modelPseudo-first-order model	7.4970.2044.91	[12]
		Ethanol			11.5547.0651.40
		Chloroform		Pseudo-first-order model	6.9613.4221.14
		Cyclohexane		Pseudo-first-order model	8.156.979.88
		Toluene		Pseudo-second-order model	60.2214.5034.51
Agricultural byproducts	Corn stalk	Acetone	300500700			[11]
		Toluene
		Benzenem-xyleneo-xyleneP-xylene	600	Pseudo-second-order model	39.1013.9711.2421.50	[31]
	Rice husk	Acetone	300500700			[11]
	Wheat straw	Acetone	500	ELM model	44.50	[14]
		Hexane			19.73
		Toluene			32.45
		p-xylene			51.09
	Bagasse sugarcane	Acetone	500	ELM model	110.09	[14]
		Hexane			36.82
		Toluene			45.17
		ρ-xylene			24.76

VOCs, volatile organic compounds.