摘要
为实现废旧竹材的二次利用,以废旧竹材为原料,采用微波法制备高性能的竹基活性炭。以亚甲基蓝去除率为指标,考察活化剂、浸渍条件、微波辐照条件对竹基活性炭吸附性能的影响。获得最佳的制备条件为:以40wt%的磷酸为活化剂,浸渍固液比1g∶12.5mL、浸渍时间14h、微波功率560W、活化时间5min、活化温度130℃、反应压力1.25×103kPa,此时竹基活性炭的亚甲基蓝去除率达87%。与传统马弗炉焙烧工艺相比,该工艺活化温度降低,活化时间缩短,但竹基活性炭吸附性能明显提高。
In order to improve the reuse of wasted bamboo,microwave irradiation process was established to prepare highperformance bamboo-based activated carbon.The effects of activation reagent,immersion conditions and microwave irradiation conditions on the performance of activated carbon were investigated using the removal efficiency of methylene blue as the evaluation idex.The optimum preparation conditions were as follows：using phosphorous acid solution（40wt%）as activation reagent,immersion ratio 1g∶12.5mL,immersion time 14 h,microwave power 560 W,activation time 5min,activation temperature 130℃ and reaction pressure 1.25×103kPa.Under the optimum condition,the removal efficiency of methylene blue achieved 87%.Compared with the traditional calcination process with muffle furmace,the microwave process redued the activation temperature,shortened the activation time,but evidently improved the adsorption efficiency of activated carbon.
出处
《化工新型材料》
CAS
CSCD
北大核心
2014年第12期38-40,共3页
New Chemical Materials
基金
国家自然科学基金(51008262)
关键词
竹基活性炭
微波
磷酸
活化
吸附
bamboo-based activated carbon
microwave
phosphoric acid
activation
adsorption
