文献类型：会议论文

英文题名：The role of dissolved oxygen in Fenton system

作者：Zhao, N. N.[1];Ding, L.[1];Bei, H. F.[1];Zheng, S. Y.[1];Han, B.[1];S, M.[1]

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

会议论文集：4th International Conference on Water Resource and Environment (WRE)

会议日期：JUL 17-21, 2018

会议地点：I Shou Univ, Kaohsiung, TAIWAN

主办单位：I Shou Univ

语种：英文

外文关键词：Rhodium compounds - Efficiency - Dissolution - Dissolved oxygen

摘要：Currently, we have little understanding of the role dissolved oxygen (O-2) playing in Fenton systems. Here we conducted an experiment to investigate the role of dissolved O-2 with rhodamine B (RhB) as a substrate. The removal efficiencies of RhB in the Fenton system without O-2 were higher than those in the Fenton system with O-2 at various COD/H2O2 ratios. The difference between the degradation efficiencies of RhB of the two systems reached the largest at a COD/H2O2 of 10. At a reaction time of 20min, COD/H2O2 ratio of 10, the removal efficiency of RhB in the Fenton system without O-2 was 32.6% higher than that with O-2, and the H2O2 utilisation ratios of the Fenton systems with and without O-2 were 36.0% and 89.8%, respectively. The dissolved O-2 in Fenton system reduced center dot OH generation, exerting negative effect on the system. The mechanism responsible for this change is also discussed.