https://scholars.lib.ntu.edu.tw/handle/123456789/598577
標題: | Using novel gold nanoparticles-deposited activated carbon fiber cloth for continuous gaseous mercury recovery by electrothermal swing system | 作者: | You S.-W Liao H.-Y Tsai C.-Y Wang C Deng J.-G Hsi H.-C. HSING-CHENG HSI |
關鍵字: | Activated carbon fiber cloth;Electrothermal swing system;Gold nanoparticle;Mercury adsorption;Waste recycling;Activated carbon;Adsorption;Carbon fibers;Efficiency;Fiber optic sensors;Gold nanoparticles;Mass transfer;Pore structure;Recovery;Activated carbon fiber cloths;Adsorption efficiency;Gaseous mercury;Gold Nanoparticles;Inlet concentration;Low concentrations;Wastes recycling;Metal nanoparticles | 公開日期: | 2022 | 卷: | 431 | 來源出版物: | Chemical Engineering Journal | 摘要: | Novel gold nanoparticles (AuNPs) deposited activated carbon fiber cloth (ACFC) was successfully developed in this study. This material showed great potential in combining with an electrothermal swing (ETS) system to sustainably adsorb and recover low-concentration elemental mercury (Hg0) in gas stream. ACFC with Au loading ratio of 0.5 wt% (0.5 wt%-ACFC-THPC) demonstrated the largest Hg0 adsorption capacity. Hg temperature-programmed desorption results suggested that Hg0 was physically adsorbed by AuNPs on Au-ACFC-THPC via amalgamation, while it was both physically and chemically adsorbed by pore structures or carbonyl groups on Raw-ACFC. The Hg0 adsorption efficiency of 0.5 wt%-ACFC-THPC was approximately 95% and remained stable during the cyclic ETS operation under various Hg0 inlet concentrations (30, 75, and 100 ?g m?3); however, the adsorption efficiency of Raw-ACFC greatly decreased to 65–75% as Hg0 inlet concentration increased to 75 and 100 ?g m?3. Furthermore, the regeneration efficiencies of all ACFCs were >90% within 6 min; indicating the promising application in concentrating Hg0 vapor and the subsequent recovery process. Mass transfer models for the simulation of Hg0 desorption within ACFCs were further conducted; the simulation results suggested that intraparticle diffusion dominated the desorption process for both Raw-ACFC and 0.5 wt%-ACFC-THPC. ? 2021 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121918707&doi=10.1016%2fj.cej.2021.134325&partnerID=40&md5=35dd8973a3fa3cc7dd12cb835aa30798 https://scholars.lib.ntu.edu.tw/handle/123456789/598577 |
ISSN: | 13858947 | DOI: | 10.1016/j.cej.2021.134325 |
顯示於: | 環境工程學研究所 |
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