ADSORPTION-ISOTHERMS OF FATTY-ACIDS ON RICE HULL ASH IN A MODEL SYSTEM

Authors
SALEH MI ADAM F
Citation
Mi. Saleh et F. Adam, ADSORPTION-ISOTHERMS OF FATTY-ACIDS ON RICE HULL ASH IN A MODEL SYSTEM, Journal of the American Oil Chemists' Society, 71(12), 1994, pp. 1363-1366
Citations number
19
Categorie Soggetti
Food Science & Tenology","Chemistry Applied
Journal title
Journal of the American Oil Chemists' Society → ACNP
ISSN journal
0003021X
Volume
71
Issue
12
Year of publication
1994
Pages
1363 - 1366
Database
ISI
SICI code
0003-021X(1994)71:12<1363:AOFORH>2.0.ZU;2-Y
Abstract
The adsorption of lauric, myristic and stearic acids on rice hull ash (RHA) from isooctane as solvent was studied and conformed to a Langmui r 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 adsorptio n, Delta G degrees, for the adsorption was determined to be -6.64, -6. 23 and -6.49 heal mol(-1) for the adsorbates, respectively. The equili brium parameter indicated that RHA is a good adsorbent for the three f atty acids examined.