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%.
Peiyong MA Jinzhou WU Xianwen ZHANG Xianjun XING Xiaowei GUO
. Preparation of Biomass Granular Activated Carbon with K2CO3 and Sycamore Tree Sawdust via Dry Mix Process[J]. The Chinese Journal of Process Engineering, 2018
, 18(1)
: 159
-164
.
DOI: 10.12034/j.issn.1009-606X.217218
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