文献类型：期刊文献

英文题名：A spontaneous catalytic membrane reactor to dechlorinate 2,4,6-TCP as an organic pollutant in wastewater and to reclaim electricity simultaneously

作者：Ding, Yiwen[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：285

起止页码：573

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20154401470755);WOS:【SCI-EXPANDED(收录号:WOS:000366618800062)】；

基金：This research is based on work supported by the National Natural Science Foundation of China (21277045), 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 the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Catalytic membrane reactor; Formic acid; 2,4,6-TCP; Electrochemistry; Organic wastewater

摘要：Wastewater reuse is currently considered globally to be the most critical element of sustainable water management, and refractory pollutants, especially chlorinated organics, make this task more challenging. In this paper, a catalytic membrane reactor is proposed and evaluated to convert two types of organic pollutants simultaneously: chlorinated organics and degradable organics. The spontaneous dechlorination could take place with the oxidation of the degradable organic pollutants at room temperature and atmospheric pressure without any additional carbon source of fuel and oxidant. The reactor could also harvest electricity through the pollutant removal process with a current density several orders higher than a microbial fuel cell. In the present studies, HCOOH was chosen as the typical degradable organic, and the chlorinated preservative 2,4,6-trichlorophenol (2,4,6-TCP) was selected as a model chlorinated pollutant. The operating parameters for the catalytic membrane reactor were investigated experimentally. The optimal operating conditions of the process are as follows: 0.5 mol/L HCOOH, 50 mg/L 2,4,6-TCP, and a flowrate of 36 mL/min. Under these optimal conditions, the voltage reaches a stable value of approximately 630 mV within 2 h, and the current is approximately 4.0 mA. Meanwhile, the power density reaches 880 mW/cm(2) at 300 my. It was also determined that 96.9% of the 2,4,6-TCP was degraded, and 43.8% was completely mineralized. These results indicate that the proposed catalytic membrane reactor provides a novel method of energy reclamation and has a promising application for the removal of a variety of organic pollutants. (C) 2015 Elsevier B.V. All rights reserved.