COMPARATIVE STUDY OF PHENOL AND NONYLPHENOL ADSORPTIONS ON ACTIVATED CARBONS

I n t roduct ion Activated carbons are frequently used for wastewater decontamination [1]. Many researchers have applied activated carbons to extract phenols and other organic contaminants from potable water [2]. Besides the adsorption capacity and mainly for economic reasons, the regeneration of activated carbons for further uses, is also an aspect of interest [3]. In many cases, trying to improve the adsorption capacity and the regeneration of the spent carbons chemical nature of the surface is modified [4]. Experimental An activated carbon prepared from olive stones (ICASA, Spain) was used (S). The carbon was also oxidized with HNO3 (SN). The specific surface areas were determined by N2 adsorption at 77