摘要
以林业废弃物杨木屑为原料,采用正交试验法探讨以磷酸为主活化剂,浓硫酸为辅助活化剂,在不同工艺条件下制备活性炭,测定其亚甲基蓝脱色力和碘的吸附值,考虑活化因素对活性炭得率和吸附性能的影响,确定最佳工艺参数.试验结果表明:磷酸-硫酸活化法制备木屑活性炭的最佳工艺条件为浸渍比1∶2.5,浸渍浓度60%,活化时间90 min,活化温度550℃.
The various process conditions of activated carbon were prepared from waste poplar sawdust by phosphoric acid-sulfuric acid activation which used phosphoric acid as main activator and concentrated sulfuric acid as auxiliary activator according to orthogonal test. The experiment determined the methylene blue decolorizing power and iodine adsorption value of activated carbon,the influence of activating factors on the yield and adsorption properties of activated carbon was studied. The experimental results showed that the optimum process conditions of preparation of sawdust active carbon by phosphoric acid-sulfuric acid activation are impregnation ratio 1 ∶ 2. 5, impregnation concentration 60%, activation time 90 min, activation temperature 550℃.
出处
《北华大学学报（自然科学版）》
CAS
2015年第1期118-122,共5页
Journal of Beihua University（Natural Science）
基金
国家林业局948项目(2014-04-28)
国家自然科学基金项目(21376241)
吉林省科技厅项目(20130206054NY
201201145
2012821)
江苏省生物质能源与材料重点实验室项目(JSBEM201201)
关键词
杨木屑
活性炭
磷酸
硫酸
sawdust
activated carbon
phosphoric acid
sulfuric acid
