Isothermal Drying Kinetic Study of Spent Coffee Grounds Using Thermogravimetric Analysis

Table 4

The values of the kinetic parameters of the spent coffee grounds drying process.

No.	Layer thicknesses δ (mm)	lnD0	Ea (kJ/mol)	r^2
1.	0.6	−20.92	8.2894	0.9805
2.	1.2	−18.36	8.7411	0.9634
3.	1.8	−18.02	9.0668	0.9685
4.	2.4	−17.27	10.2612	0.8753