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

Table 2

Values of adsorption extent, Peleg’s constants ( and ) for adsorption of hexanoic acid 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)
100	4.44 ± 0.23	4.07 ± 0.60	0.225 ± 0.015	0.98	0.01	155.44 ± 4.75	1.68
200	14.93 ± 1.10	4.28 ± 0.35	0.067 ± 0.012	0.75	0.02	159.85 ± 4.12	0.53
300	33.33 ± 1.79	2.52 ± 0.14	0.030 ± 0.000	0.75	0.43	162.72 ± 3.47	0.39
400	45.45 ± 0.54	0.49 ± 0.17	0.022 ± 0.000	0.96	0.67	164.86 ± 4.23	0.34