Evaluation of an Adsorbent Based on Agricultural Waste (Corn Cobs) for Removal of Tyrosine and Phenylalanine from Aqueous Solutions

Table 3

Binary systems equilibrium isotherm models and fitting parameters.

Model	Primary amino acid—interfering amino acid	𝑞𝑚 (mg g^−1)	𝐾1/𝐾2^∗	RMS (%)	𝑟^2
Langmuir
(a) Phe removal	Phe-Tyr	78.46	8.3	3.194	0.996
(b) Tyr removal	Tyr-Phe	6.78	0.1	0.505	0.999
Freundlich
(c) Phe removal	Phe-Tyr	79.17	7.7	3.488	0.995
(d) Tyr removal	Tyr-Phe	6.35	0.2	0.359	0.999

∗Subscripts 1 and 2 refer to the amino acid being removed (1) and the interferent (2).