文章基本信息

标题：Plasma jet assisted carbonization and activation of coffee ground waste
本地全文：下载
作者：Hongjae Kang ; Seongil Choi ; Jin Hee Lee 等
期刊名称：Environment International
印刷版ISSN：0160-4120
电子版ISSN：1873-6750
出版年度：2020
卷号：145
页码：1-8
DOI：10.1016/j.envint.2020.106113
出版社：Pergamon
摘要：Activated carbon has been extensively utilized to adsorb pollutants generated by industrial activities. There have been many attempts to efficiently produce activated carbon from spent coffee grounds in the field of environmental technology. In this study, the feasibility of the novel production of activated carbon from coffee ground waste using a plasma jet was evaluated. A rotating gliding arc generator was designed that used an N2 plasma jet for the carbonization process and a CO2 plasma jet for the activation process. It was confirmed that the coffee ground waste could be carbonized and activated by the two plasma jets in the same reactor. The characteristics of the surface morphologies of the activated carbon samples varied depending on the plasma treatment conditions, such as the electric power of the plasma jet and the treatment time. The results implied that the adsorption capacity of the activated carbon could be optimized by regulating the pore size and distribution based on the plasma treatment conditions with regard to the molecular size of the target adsorbate.
关键词：Activated carbon ; Arc discharge ; Coffee ground waste ; Gliding arc ; Plasma jet