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

Table 1

Values of adsorption extent, Peleg’s constants ( and ) for adsorption of octanoic 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)
250	37.04 ± 2.26	1.086 ± 0.082	0.027 ± 0.004	0.920	0.79	313.09 ± 4.17	5.51
500	41.67 ± 2.20	0.497 ± 0.025	0.024 ± 0.000	0.966	0.63	326.01 ± 4.12	4.65
750	71.43 ± 3.46	0.132 ± 0.068	0.014 ± 0.005	0.993	0.16	330.85 ± 3.53	2.33
1000	111.11 ± 4.69	0.196 ± 0.041	0.009 ± 0.001	0.942	0.77	337.47 ± 4.80	2.66