Characterizing the Deacidification Adsorption Model of Organic Acids and Phenolic Compounds of Noni Extract Using Weak Base Ion Exchanger

Table 4

Values of adsorption extent, Peleg’s constants ( and ) for adsorption of scopoletin with regression coefficient (R²), and the root mean squared deviation (RMSD) at different initial concentrations.

Initial concentration (mg/L)	Adsorption extent (mg/g)	(min·g/mg)	(g/mg)	R^2	RMSD (adsorption extent)	Exhaustive time (Peleg)	RMSD (exhaustive time)
25	1.19 ± 0.119	61.47 ± 1.06	0.84 ± 0.043	0.75	0.02	465.51 ± 7.89	0.68
50	2.02 ± 0.15	38.37 ± 2.39	0.50 ± 0.018	0.76	0.01	466.76 ± 8.47	1.20
75	1.88 ± 0.09	30.64 ± 0.53	0.53 ± 0.015	0.82	0.03	392.14 ± 9.07	1.17
100	1.68 ± 0.04	17.80 ± 2.02	0.60 ± 0.012	0.92	0.02	21.78 ± 1.66	0.48