The rapid growth of the Enteromorpha prolifera (EP) in beaches of some coastal city has caused serious environmental problems. The proper disposal of large quantity of waste EP is an important issue. In this paper, the biomass of the EP is thermally pyrolyzed into a biochar and its sorption characteristics with respect to the naphthalene in water are studied. It is shown that the sorption of the naphthalene by the EP biomass and the lower temperature (150℃) derived EP biochar is governed by a weak partition process, while the biochar derived from the EP at the higher temperatures of 250 and 350℃ exhibits much better sorption capacity than the others, and their sorption is contributed by both the adsorption and the partition. However, the EP biochar derived at 500℃ has a weaker sorption capacity than at 250 and 350℃, and the EP biochar derived at 700℃ has almost no carbon content except for some minerals, and exhibits almost no sorption capacity with respect to the naphthalene.

Enteromorpha prolifera  /  biochar  /  sorption  /  naphthalene  /  adsorption  /  partition