A novel advanced oxidation process――wet electro-catalytic oxidation for high concentrated organic wastewater treatment |
| |
作者姓名: | DAI QiZhou ZHOU MingHua LEI LeCheng ZHANG XingWang |
| |
作者单位: | Institute of Environmental Pollution Control Technologies, Xixi Campus, Zhejiang University, Hangzhou 310028, China |
| |
基金项目: | Supported by the National Natural Science Foundation of China (Grant No. 20306027) and the Natural Science Foundation of Zhejiang Province (Grant No. Y504129) |
| |
摘 要: | A novel advanced oxidation process——wet electrocatalytic oxidation (WEO) was studied with p-nitrophenol as model pollutant and β-PbO2 electrode as the anode. Compared with the effect of the individual wet air oxidation (WAO) and electrochemical oxidation (EO), the effect of WEO showed syn- ergistic effect on COD removal under the conditions of temperature 160℃, C=1000 mg·L-1, PN2=0.50 MPa, PO2=0.9 MPa, current density = 3 mA·cm-2, Na2SO4 3 g·L-1. And the synergistic factor got the best value of 0.98 within 120 min after 180 min treatment. The synergistic factor was studied after 120 min treatment at 100℃, 120℃, 140℃ and 160℃, and the effect of 120℃ was the best with the value of 1.26. Possible mechanism for the synergistic effect was discussed based on the analysis of free-radical generation and intermediates detected by HPLC and GC/MS.
|
关 键 词: | 高浓度有机废水 废水处理 电化学氧化 湿式电催化氧化 协同效应 |
收稿时间: | 19 November 2006 |
修稿时间: | 2006-11-192007-03-13 |
本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录! |
| 点击此处可从《中国科学通报(英文版)》浏览原始摘要信息 |
| 点击此处可从《中国科学通报(英文版)》下载免费的PDF全文 |