Open AccessSorption of Semi-Volatile Organic Compounds by Bottom and Fly Ashes Using HPLC
Author(s) -
Abd. El-Hakim Daifullah,
H.M.H. Gad
Publication year - 1998
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361749801600404
Subject(s) - chemistry , adsorption , sorption , phenol , aqueous solution , chromatography , high performance liquid chromatography , cresol , nitrophenol , component (thermodynamics) , fly ash , chemical engineering , organic chemistry , thermodynamics , catalysis , engineering , physics
The adsorption of phenolic compounds on a mixture of bottom and fly ashes has been investigated. Thus, the effect of molecular weight and molecular configuration on the adsorption of phenol (Ph), m-cresol ( m-Cr), p-cresol ( p-Cr), 2-nitrophenol (2-NP) and 4-nitrophenol (4-NP) from aqueous solution have been determined. The thermodynamic parameters for the adsorption of 2-NP and 4-NP have been calculated on the basis of Everett's isotherm equation. Batch experiments were conducted to produce isotherms for single-component, two-component and four-component systems. For this purpose, high-performance liquid chromatography was used. It was found that the ultimate capacity of the adsorbent is considerably less than that predicted from summing the single-component data; this has been attributed to increased competition for adsorption sites.