水蒸气法制备橡胶籽壳活性炭的研究

Study on Preparation of Activated Carbon from Rubber-seed Shell with Steam Method

采用橡胶籽壳炭为原料,以水蒸气为活化剂制备吸附性能优良且得率高的活性炭。通过正交试验设计,研究活化温度、活化时间及水蒸气用量对活性炭吸附性能的影响。得到最佳活化工艺条件为:橡胶籽壳炭量1.0 kg,活化温度880℃,活化时间40 m in,水蒸气用量8 kg/h。制得的优质橡胶籽壳活性炭的亚甲基蓝脱色力240 mg/g,碘值1 113 mg/g,强度94.2%,得率40.5%。

Using steam as activating agent, high-quality activated carbon from rubber-seed charcoal was prepared. Results of orthogonal test indicated the influences of activating temperature, activating time and flow rate of steam. The optimum activation conditions for rubber-seed shell activated carbon were as follows： activating temperature 880 %, activating time 40 min, steam flow rate 8 kg/h. Under these conditions, high-class rubber-seed shell activated carbon could be obtained, with decolorization of 240 mg/g, toward 0.15 % methylene blue, iodine adsorption of 1 113 mg/g, strength of 94.2 %, and yield of 40.5 %.