Characteristics of adsorptive removal of 2-methylisoborneol by micro-milled activated carbon

In both research and practice of water purification technology, superfine powdered activated carbon (SPAC), which is produced from conventionally sized powdered activated carbon (PAC) by wet milling in a bead mill, has attracted attention for its higher adsorption capacity of contaminants as well as the higher adsorptive uptake speed than its parent PAC. However, the previous SPAC researches only focused on the SPAC with a median diameter (D50) around one to a few micrometers which were produced from fresh PAC by wet milling system. With the improvement of milling technology, 1) the similar sized SPAC can also be produced by dry milling, and 2) the submicron SPAC with D50 less than 200 nm (termed as SSPAC, submicron-sized SPAC) can be produced by wet milling. Considering that few researches touched the above two points, this doctoral work attempted to fill in the blanks by investigating the adsorption performance of dry-milled SPAC and also the wet-milled SSPAC, in particular, comparison with the wet-milled SPAC. What’s more, much effort was put into applying the wet-milling technology to the reuse of spent activated carbon.