摘要：

以光合竹为原料,研究了其制备活性炭的工艺条件,考察了活化剂浓度、固液比、活化时间以及活化温度等因素对活性炭碘吸附值、亚甲基蓝吸附值的影响。实验结果表明,用化学法制备光合竹活性炭的最佳工艺参数为:以ZnCl₂为活化剂,ZnCl₂浓度为5 mol/L,活化剂浸渍时间为2 h,固液比为1:4,活化时间为60 min,活化温度为500 ℃。在此工艺条件下所制备活性炭得率为48.8%,亚甲基蓝吸附值为197.14 mg/g,碘吸附值为1 034.30 mg/g,样品质量指标接近净化用活性炭标准。

关键词: 光合竹, 活化剂, 活性炭, 吸附剂

Abstract:

By means of photosynthetic bamboo as raw materials,the preparation of its activated carbon has been studied. The influences of the activator concentration,solid-liquid ratio,activation time,activation temperature and other factors on the adsorption values of iodine and methylene blue are investigated. The results show that,the optimum technical parameters of photosynthetic bamboo activated carbon prepared by chemical method are as below,ZnCl₂ used as activator,concentration of ZnCl₂ is 5 mol/L,activator immersion time 2 hours,solid-liquid ratio 1: 4,activation time 60 min,and activation temperature 500 ℃. Under these technical conditions,the yield of activated carbon prepared is 48.8%,methylene blue adsorption value and iodine adsorption value of the prepared activated carbon are 197.14 mg/g and 1 034.30 mg/g,respectively. The quality indexes of the samples are close to the activated carbon standard for water purification.

Key words: photosynthetic-bamboo, activator, activated carbon, adsorbent

中图分类号: 

• X703.1