Kinetics of Solvent Blue and Reactive Yellow removal using microwave radiation in combination with nanoscale zero-valent iron

作     者：Yanpeng Mao Zhenqian Xi Wenlong Wang Chunyuan Ma Qinyan Yue 

作者机构：School of Energy and Power Engineering Shandong University School of Environmental Science and Engineering Shandong University 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2015年第27卷第4期

页      面：164-172页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the Postdoctoral Science Foundation of China (No. 2013M531602) the Independent Innovation Foundation of Shandong University (No. IIFSDU 2012GN007) the Shandong Post-Doctoral Science Foundation (No. 201202017) 

主　　题：Microwave n ZVI Dye Efficiency Kinetics 

摘      要：We investigated the efficiency and kinetics of the degradation of soluble dyes over the p H range 5.0–9.0 using a method employing microwave radiation in combination with nanoscale zero-valent iron（MW–n ZVI）. The n ZVI particles（40–70 nm in diameter） were prepared by a liquid-phase chemical reduction method employing starch as a dispersant.Compared to the removal of Solvent Blue 36 and Reactive Yellow K-RN using only n ZVI,more rapid and efficient dye removal and total organic carbon removal were achieved using MW–n ZVI. The dye removal efficiency increased significantly with decreasing p H, but was negligibly affected by variation in the microwave power. The kinetics of dye removal by MW–n ZVI followed both an empirical equation and the pseudo first-order model, while the kinetics of dye removal using n ZVI could only be described by an empirical equation. It was also concluded that microwave heating of the dye solutions as well as acceleration of corrosion of n ZVI and consumption of Fe（II） were possible reasons behind the enhanced dye degradation.