标题：Sonication-assisted reactivation process: A new method to enhance traditional chemical activation technology
作者：Yu, Junwei; Qiao, Kun; Zhu, Bo; Cai, Xun; Cheng, Yuan; Yuan, Xiaomin; Liu, Dongwei
作者机构：[Yu, Junwei; Zhu, Bo; Yuan, Xiaomin] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Shandong, Peoples R Chin 更多
通讯作者：Zhu, Bo;Zhu, B;Cai, X
通讯作者地址：[Zhu, B]Shandong Univ, Sch Mat Sci & Engn, Carbon Fiber Engn Res Ctr, Jinan 250061, Shandong, Peoples R China;[Cai, X]Shandong Univ, Sch Comp Sci & Te 更多
来源：JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
关键词：Chemical reactivation; Sonication; Activated carbon fiber; Formaldehyde; adsorption
摘要：In order to further enhance the adsorption properties of activated carbon fiber, sonication is introduced into the process of activator impregnation on the basis of traditional chemical reactivation technology. The novel process of sonication-assisted chemical reactivation is proposed for the first time in this paper. This novel process probe a new developing route for the surface structure modification of activated carbon fiber, which also provides a new idea to enhance the traditional chemical activation technology. In this study, viscose-based activated carbon fiber is used as research object, and low concentration formaldehyde gas is used as adsorbate. The research of the novel reactivation process is researched by four activators of phosphoric acid, zinc chloride, perhydrol and nitric acid, which commonly used in chemical activation processes of industrial production. The results indicate that the novel reactivation process assisted by sonication has an obvious improvement on the pore volume of micropores and mesopores at the range of 2-5 nm, meanwhile, the content of surface functional groups increase significantly. Besides, formaldehyde adsorption properties enhanced significantly after treated by the novel reactivation process. In particular, the formaldehyde adsorption rate increased by 90.05% when phosphoric acid used as activator. (C) 2018 Published by Elsevier B.V. on behalf of Taiwan Institute of Chemical Engineers.