文献类型：期刊文献

英文题名：The coupling use of electro-chemical and advanced oxidation to enhance the gaseous elemental mercury removal in flue gas

作者：Cao, Limei[1,3];Yang, Jie[1];Xu, Yi[1];Sun, Wei[2];Shen, Qicheng[1];Zhou, Jiacheng[1];Yang, Ji[1,3]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Hainan Univ, Coll Ecol & Environm, Key Lab Agroforestry Environm Proc & Ecol Regulat, 58 Renmin Rd, Haikou 570228, Hainan, Peoples R China;[3]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2021

卷号：257

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20204409424575);WOS:【SCI-EXPANDED(收录号:WOS:000595046200003)】；

基金：This research is based upon the work supported by the National Natural Science Foundation of China (Project No.21307032) and "the Fundamental Research Funds for the Central Universities." Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the view of the supporting organizations.

语种：英文

外文关键词：Elemental mercury (Hg-0); Electrochemistry; Advanced oxidation process (AOPs); UV; Flue gas

摘要：A novel diffusion electro-chemical combined advanced oxidation reactor offers potential for elemental mercury (Hg-0) removal in flue gas and shown excellent performance. This study introduced an ultraviolet light into the electric catalytic system to form an UV-electric oxidation system to strengthen Hg-0 removal. Hg-0 removal efficiency in the combined UV-electric oxidation system reached up to 65%. Hg-0 is excited by UV lamp with a wavelength of 253.7 nm, and a very small amount of oxygen contained in high-purity nitrogen can still participate in Hg-0 oxidation reaction. In addition, the Fenton method has also been introduced into the simple electrolysis system. Both the above combined system can improve the efficiency of Hg-0 removal. The electrochemical GDE was characterized by SEM, BET, and contact angle and gas permeability. The electro-chemical and advanced oxidation process (Fenton method and UV illumination) combined within a system or individually in series were explored the different influencing factors. The gaseous elemental mercury removal mechanism of the combined electro-chemical and advanced oxidation was investigated via combining the experimental data and theoretical reasoning. Electrochemical coupling with other advanced oxidation technologies is a promising technology.