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Adsorption isotherms of fatty acids on rice hull ash in a model system
Author(s) -
Saleh Muhammad Idiris,
Adam Farook
Publication year - 1994
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02541356
Subject(s) - adsorption , chemistry , monolayer , stearic acid , langmuir , myristic acid , chromatography , rice hulls , langmuir adsorption model , nuclear chemistry , organic chemistry , fatty acid , palmitic acid , materials science , biochemistry , composite material
The adsorption of lauric, myristic and stearic acids on rice hull ash (RHA) from isooctane as solvent was studied and conformed to a Langmuir isotherm. Monolayer coverage was determined to be 35.7±2.5, 43.5±2.2 and 36±5 mg/g, respectively. The free energy of adsorption, †G°, for the adsorption was determined to be‐6.64,‐6.23 and‐6.49 kcal mol −1 for the adsorbates, respectively. The equilibrium parameter indicated that RHA is a good adsorbent for the three fatty acids examined.