Adsorption Properties of Lignin-derived Activated Carbon Fibers (LACF)

Contescu, Cristian I.¹  Gallego, Nidia C.¹  Thibaud-Erkey, Catherine²  Karra, Reddy² 

[1] Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States);United Technologies Research Center (UTRC), East Hartford, CT (United States)

关键词: activated carbon fibers;    lignin;    volatile organic compounds;    carbon dioxide;    formaldehyde;   

DOI  :  10.2172/1246778
RP-ID  :  ORNL/TM--2016/88
PID  :  OSTI ID: 1246778
Others  :  Other: ED2802000
Others  :  CEED492
Others  :  CRADA/NFE-15-05496

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The object of this CRADA project between Oak Ridge National Laboratory (ORNL) and United Technologies Research Center (UTRC) is the characterization of lignin-derived activated carbon fibers (LACF) and determination of their adsorption properties for volatile organic compounds (VOC). Carbon fibers from lignin raw materials were manufactured at Oak Ridge National Laboratory (ORNL) using the technology previously developed at ORNL. These fibers were physically activated at ORNL using various activation conditions, and their surface area and pore-size distribution were characterized by gas adsorption. Based on these properties, ORNL did down-select five differently activated LACF materials that were delivered to UTRC for measurement of VOC adsorption properties. UTRC used standard techniques based on breakthrough curves to measure and determine the adsorption properties of indoor air pollutants (IAP) - namely formaldehyde and carbon dioxide - and to verify the extent of saturated fiber regenerability by thermal treatments. The results are summarized as follows: (1) ORNL demonstrated that physical activation of lignin-derived carbon fibers can be tailored to obtain LACF with surface areas and pore size distributions matching the properties of activated carbon fibers obtained from more expensive, fossil-fuel precursors; (2) UTRC investigated the LACF potential for use in air cleaning applications currently pursued by UTRC, such as building ventilation, and demonstrated their regenerability for CO2 and formaldehyde, (3) Both partners agree that LACF have potential for possible use in air cleaning applications.