摘要
研究了以城市垃圾中3种典型的固体有机废弃物——锯木屑、纸张和塑料的热解产物(分别简称木炭、纸炭和塑料热解物)为原料,水蒸气为活化剂制备废弃物基活性炭时钙化物含量对活化过程、活性炭吸附性能(以碘值表征)及其孔结构的影响。结果表明,钙化物可加快活化反应的速度,且钙化物含量在1.5%时活化反应速度即已不再随钙化物含量的增加而增加;活性炭的吸附性能则随钙化物含量的增加而减少,同时钙化物对活性炭的孔径分布基本无影响,但降低了活性炭的比表面积、微孔孔容及中孔孔容;钙化物的2种前驱体(即CaO和Ca(OH)2)对活化过程具有相同的催化作用。
The influence of calcium compound on activation process, the adsorbability and the pore structure of activated carbon, prepared from pyrolysis products of three typical municipal solid organic wastes components-sawdusts, papers and plastics by the process of steam activation, were investigated. The experimental results show that the calcium compound can increase activation speed, and the activation process doesn＇ t again speed with the increase of the calcium compound content as the content is in 1.5%. The adsorbability of activated carbon reduces with calcium compound content increase. There is no influence of calcium compound on the pore distribution, but it makes the surface area, the volume of micropore and mesopore lower. In addition, the catalyzing effect of calcium compounds on activated process is independent of the kinds of them.
出处
《环境工程学报》
CAS
CSCD
北大核心
2008年第1期126-129,共4页
Chinese Journal of Environmental Engineering
关键词
钙化物
活性炭
催化作用
活化过程
吸附性能
calcium compound
activated carbon
catalysis
activation process
adsorbability
