微波氯化锌法马占相思木材剩余物制备活性炭  

Study on Preparation of Activated Carbon from Timber Surplus of Acacia mangium Willd.

作　　者：陈丛瑾[1] 黎跃[1] 赵兰线[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《林产化学与工业》2007年第1期101-103,共3页Chemistry and Industry of Forest Products

摘　　要：以马占相思木材剩余物为原料,研究用微波辐射氯化锌法制备活性炭的可行性。探讨了微波辐射氯化锌法在微波功率900W、氯化锌溶液质量分数50%的条件下锌屑比、氯化锌溶液的pH值及微波辐射时间对产品得率、亚甲基蓝吸附值的影响。得到了微波辐射氯化锌法制备活性炭的最佳工艺:锌屑比2.5∶1、氯化锌溶液pH值为1、微波辐射时间6min,用此工艺制得的活性炭得率为47.5%,产品的亚甲基蓝吸附值达12.9mL/0.1g,是国家一级品标准(GB/T13803.2-1999)的1.43倍,该产品对Cr6+的吸附量为9.974mg(以1g活性炭计,Cr6+溶液pH值4.0,质量浓度50mg/L)。Feasibility of preparing activated carbon from timber surplus of Acacia mangium, with ZnCl2 by microwave irradiation was studied. The effects of the ratio by weight of ZnCl2 to timber surplus of A. mangium, microwave irradiation time and pH value of ZnCl2 solution on the quality of activated carbon were investigated. Under the condition of microwave power 900 W and ZnCl2 solution concentration 50 %, the optimum technology on preparation of activated carbon with ZnCl2 by microwave irradiation was obtained. The mass ratio of ZnCl2 to timber surplus of A. mangium 2.5 ： 1, microwave irradiation time 6 min,pH value of ZnCl2 solution 1. The yield of activated carbon was 47. 5 % and methylene blue adsorption was 12.9 mL/0.1 g which was 1.43 times of the level specified for the first grade in GB/T 13803.2 - 1999 standard. The product was used for treatment of Cr^6＋ solution （pH value 4.0, concentration 50 mg/L） ,Cr^6＋ adsorption was 9. 974 mg/g activated carbon.

关 键 词：马占相思木材剩余物 微波辐射 氯化锌 活性炭 

分 类 号：TQ424.19[化学工程] O532.23[理学—等离子体物理]