摘要
以毛竹梢为原料,研究用微波辐照化学法制备活性炭的可行性。探讨了在微波功率900W条件下,微波辐射氯化锌法和磷酸法中各因素对产品得率、亚甲基蓝脱色力的影响。得到了微波辐射氯化锌法制备活性炭的最佳工艺:ZnCl2溶液质量分数50%,料液比1∶5(质量比,下同),辐照时间25min,浸渍时间24h,活性炭得率为46.3%,亚甲基蓝脱色力12.7mL/0.1g,是国家一级品标准(GB/T13803.2-1999,下同)的1.41倍。微波辐射磷酸法制备活性炭的最佳工艺:磷酸溶液质量分数40%,料液比1∶5,辐照时间20min,浸渍时间24h,活性炭得率为50.5%,亚甲基蓝脱色力11.0mL/0.1g,是国家一级品标准的1.22倍。
Feasibility of preparing activated carbon from moso bamboo （ Phyllostachys pubescens ） twig with ZnC12 and H3PO4 using microwave irradiation was studied. The effects of ZnC12 and H3PO4 solution concentration, ratio by weight of the stem of P. pubeseens twip to ZnC12 and H3PO4 solution, dipping time and microwave irradiation time on the quality of activated carbon were investigated. Under the condition of microwave power 900 W, the optimum technology on preparation of activated carbon with ZnCI2 using microwave irradiation was obtained as follows ：ZnC12 solution ma^s fraction 50 %, the ratio of weight of the stem of P. pubescens twip to ZnC12 solution 1 ： 5, dipping time 24 h, microwave irradiation time 25 min. The activated carhon yield reached 46.3 % and decolorizing capacity for methylene blue was 12.7 mL/0.1 g, which was 1.41 times of the first grade standard of GB/T 13803.2 - 1999. The optimum technology on preparation of activated carbon with H3PO4 using microwave irradiation was obtained as follows ： H3PO4 solution mass fraction 40 %, the ratio of weight of the stem of P. pubescens twip to H3PO4 solution 1 ： 5, dipping time 24 h, microwave irradiation time 20 min. The activated carbon yield reached 50, 5 % and decolorizing capacity for methylene blue was 11.0 nL/0. 1 g, which was 1.22 times of the first grade standard of GB/T 13803.2 - 1999.
出处
《林产化学与工业》
EI
CAS
CSCD
2008年第3期86-90,共5页
Chemistry and Industry of Forest Products
关键词
毛竹
微波辐照
氯化锌法
磷酸法
活性炭
Phyllostachys pubescens
microwave irradiation
ZnCl2 method
H3P04 method
activated carbon
作者简介
陈丛瑾（1970-），女，湖北成宁人，副教授，博士生，从事林产化工的教学、科研工作；E-mail：gxdxccj@163．com。
