microwave irradiation time affects the development of pores of Activated Carbon
Author: langfeng Time: 2018-07-17
Microwave irradiation time also signicantly affected the development of pores on the surface of AC. At 5 mins of microwave irradiation time, pores with irregular shapes and sizes were formed on the surface. When the microwave irradiation time was increased to 10mins, the existing pores were enlarged and new pores were formed on the surface. This was probably because the longer exposure to microwave radiation has caused more heating to the banana peel char,thus promoting the decomposition of the remaining volatile fraction present within the char matrix. As a result, more volatile matter were released and this resulted in more voids pace(pores) formed on the surface of AC. Nevertheless, the pores observed from BP15 were deformed and ruptured,which suggested that 15 mins of microwave irradiation time was too long and was likely to have provided an excessive heat energy for pores destruction.