文献类型：期刊文献

英文题名：Removal of highly concentrated toluene from flue gas by an anode-supported solid oxide fuel cell reactor to generate electricity

作者：Wu, Jing[1];Sun, Wei[1];Cao, Limei[1];Yang, Ji[1]

机构：[1]E China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2016

卷号：301

起止页码：334

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20163102664484);WOS:【SCI-EXPANDED(收录号:WOS:000378470700037)】；

基金：This research is based on work supported by the National Natural Science Foundation of China (22277045), the Public Welfare project of the Ministry of Environmental Protection (201309021), the "Shu Guang" project of the Shanghai Municipal Education Commission and the Shanghai Education Development Foundation, and Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Toluene; SOFC; VOCs; Flue gas; Organic gas

摘要：Toluene, a typical volatile organic compounds (VOCs), is raising growing concern due to its harm to human health and atmospheric environment. However, it also can become a fuel for that C-C and C-H bonds contain considerable chemical energy. In here, we utilize a solid oxide fuel cell (SOFC) reactor to degrade toluene as an environment pollutant and to take full advantages of its chemical energy simultaneously to generate electricity. The scanning electron microscopy (SEM) results show a uniform three layer structure of the cell and the porous morphology of the anode. Energy dispersive spectroscopy (EDS) illustrates the atomic ratio of the fuel cell and reveals a diffusion layer of the cell between the cathode and the electrolyte with an atomic ratio of Ce:Gd:O = 5:26:69. In the reactor, the toluene can be removed from a low temperature of 600 degrees C. It can be totally removed under 650 degrees C and obtain a power density of 14 mW/cm(2). The removal efficiency can reach 94.19% under high toluene concentration of 1.874 x 10(5) ppmv and a temperature of 650 degrees C and obtain a power density of 14 mW/cm(2). However, it decreases as the flow rate increases to 200 mL/min. With the initial concentrations varying from 1.243 x 10(5) ppmv to 5.472 x 10(5) ppmv, the cell efficiency declines from 29.93%, 20.89%, 19.13% and 19.61% to 16.06%, 5.030%, 8.297% and 7.874% as the flow rate increases from 50 mL/min to 200 mL/min. The impedance spectra are analyzed for the mechanism of cell performance. The economic analysis shows that it can save energy not only in that it generates electricity while removing toluene but also in that the heat it releases can well help preheat the cathode air. (C) 2016 Elsevier B.V. All rights reserved.