Study on adsorption of chlorobenzene on marine sediment

The sorption behavior of chlorobenzene on marine sediments treated by diffe rent methods was investigated. Through experiments on three factors (temper ature, sediment organic carbon content, and media) that might affect the so rption behavior of chlorobenzene, some important conclusions were obtained. Three hours were required for adsorption equilibrium of chlorobenzene on m arine sediments. Adsorption of chlorobenzene was completed mainly via the s urface and microporosity action of sediment. Either the Freundlich model or the Langmuir model was fit for describing adsorption behavior of chloroben zene on marine sediments. Temperature did not have a great influence on ads orption behavior of chlorobenzene in seawater, but the saturate sorption am ount decreased as the temperature became high. Through study on adsorption of chlorobenzene in different media, we found that the saturate sorption am ount of chlorobenzene in natural seawater was several times greater than th at in artificial seawater or deionized water. (C) 2001 Academic Press.