Figure 6 shows the increased activation time, the activation performance reduced but the specific surface area increases in both coal sample CC6-AC and AC-BCC. Specifically, the increased activation time from 30 minutes to 90 minutes, the activation performance fell 65% to 24%, ie a reduction of nearly 40% (of which 10% increased from 30 minutes to 60 minutes and 30% While increased from 60 minutes to 90 minutes). This shows that, when operated production time activation should only choose in about 60 minutes. In addition, when comparing the specific surface area, resulting in Figure 6 also shows that the BET value of the activated carbon samples CC6-AC2 for a period of 60 minutes (926 m2 / g) than value BET form of BCC-AC3 with activation time is 90 minutes (902 m2 / g). This confirms improved speed time and firing of coal-earlier period has brought positive results in the activation stage; not only can improve the quality of activated carbon, but also help reduce the cost of the process by reducing the activation time.
đang được dịch, vui lòng đợi..