Abstract
It has been known that dioxin-like polychlorinated biphenyl (DL-PCB) is present in almost all types of environments worldwide. Adsorption treatment of DL-PCB has been expected for one of the simple and low-cost removal technology. In the present study, DL-PCB adsorption capability of bamboo powder charcoal and activated carbon were investigated. Bamboo charcoal and activated carbon were prepared by carbonization and activation with air, carbon dioxide, and steam. The pore properties of obtained adsorbents were analyzed by the Brunauer-Emmett-Teller (BET) for surface area, t-plot analysis for micropore, and the Barrett-Joyner- Halenda (BJH) method for mesopore. Then, adsorption experiments using DL-PCB in hexane solution were conducted. These experiments revealed that every charcoal samples did not show high DL-PCB adsorption activity. On the other hand, activated carbon samples prepared by air and carbon dioxide activation having area of over 1000 m2/g and micropores with diameters of about 0．7 nm exhibited high activity for the adsorption of DL-PCB.
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