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Preparation and characterization of black liquor-derived activated carbon by self-chemical activation
Carbon Letters ( IF 4.5 ) Pub Date : 2020-03-04 , DOI: 10.1007/s42823-020-00132-2
Yong-Jung Kim , Ikpyo Hong , Joongpyo Shim , Jung-Chul An

A highly functional, environmentally friendly carbonaceous adsorbent material using black liquor (a by-product from the pulp manufacturing) was produced and characterized. This study showed the effect of self-chemical activation driven by inherent alkali, originated from the unique composition of black liquor. A preparation of the micropore-dominant activated carbon was made in an easy and simple manner. The specific surface areas of samples were found to be 718–1591 m2/g variated upon heat treatment conditions. The sample activated at 850 °C (50 min as retention time) showed the maximum specific surface area of 1591 m2/g with 13.6% as a production yield. Considering the factors influencing pore structure of activated carbon materials in this study, it was confirmed that mesopore-related surface area increased gradually as the activation temperature and retention time increased. It is noteworthy to address that economically valuable micropore-dominant activated carbon can be produced by a simple heat treatment of the waste material, black liquor. The activated carbon sample derived from black liquor can be applied to various fields, such as environment and energy storage.

中文翻译:

自化学活化法制备和表征源自黑液的活性炭

使用黑液(纸浆生产的副产品)生产并表征了一种功能强大,环保的碳质吸附材料。这项研究表明,固有的碱驱动的自化学活化作用源于黑液的独特成分。以容易和简单的方式制备以微孔为主的活性炭。发现样品的比表面积为718–1591 m 2 / g,具体取决于热处理条件。在850°C(保留时间为50分钟)下活化的样品显示的最大比表面积为1591 m 2/ g,产率为13.6%。考虑到影响活性炭材料孔结构的因素,已确认中孔相关的表面积随活化温度和保留时间的增加而逐渐增加。值得注意的是,可以通过对废料黑液进行简单的热处理来生产具有经济价值的以微孔为主的活性炭。源自黑液的活性炭样品可应用于各种领域,例如环境和能量存储。
更新日期:2020-03-04
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