K2CO3-锯末干混合制备成型活性炭

以梧桐锯末为基体、无水K2CO3为活化剂，采用干混合法制备成型活性炭颗粒，通过单因素实验考察盐料质量比、活化温度、活化时间及成型密度对活性炭吸附碘性能的影响，并对其进行了表征. 结果表明，在盐料质量比2.0、活化温度950℃、活化时间80 min、成型密度1.3 g/cm3的条件下，所制成型活性炭对碘的吸附容量达1323.25 mg/g. 成型活性炭具有发达的孔结构，比表面积为1432.59 m2/g，平均孔径为1.70 nm，总孔容为0.772 cm3/g，其中微孔比表面积为1302.75 m2/g，孔容为0.566 cm3/g，微孔率达73.3%.

Preparation of Biomass Granular Activated Carbon with K2CO3 and Sycamore Tree Sawdust via Dry Mix Process

The granular activated carbon particles were produced by dry mix method with the sycamore tree sawdust and K2CO3. The influences of salt/sawdust mass ratio, activation temperature, activation time and granular density on the granular activated carbon adsorptive property were investigated. The results indicated that the optimal preparation conditions for making granular activated carbon were mass ratio of salt to sawdust 2.0, activation temperature 950℃, activation time 60 min and granular density 1.3 g/cm3, where the granular activated carbon obtains the best iodine adsorption capacity (1323.25 mg/g). The granular activated carbon has the developed pore structure and large specific surface area (1432.59 m2/g), the total pore volume is 0.772 cm3/g, and the average pore diameter is 1.7 nm. Particularly, the micro-pore specific surface area as well as 1302.75 m2/g and pore volume 0.566 cm3/g respectively, microporous rate reached 73.3%.