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.
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Saleh et al. (1994) studied this question.
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