A study on catalytic degradation of Orange II by modified magnetite/H2O2 heterogeneous Fenton-like system(改性磁铁矿/H2O2非均相类Fenton体系催化降解橙黄II的研究)
为了提高非均相类Fenton体系的催化效率,采用浓硫酸对磁铁矿粉进行表面改性,得到改性磁铁矿(M-Fe3O4).探究以M-Fe3O4为催化剂的非均相类Fenton体系对橙黄II的氧化降解效果,并考察M-Fe3O4投加量、H2O2投加量、反应初始pH值等因素对橙黄II脱色率和TOC去除率的影响.XRD、TEM和FT-IR表征结果表明,表面改性后M-Fe3O4粒径减小,比表面积增加,且表面覆盖硫酸铁混盐等活性组分.与磁铁矿/H2O2和FeSO4/H2O2两体系相比,M-Fe3O4/H2O2非均相类Fenton体系对橙黄II(初始浓度为500 mg · L-1)的降解效率明显提升.在最佳反应条件(p...
Main Authors: | , , , , |
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Format: | Article |
Language: | zho |
Published: |
Zhejiang University Press
2018-07-01
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Series: | Zhejiang Daxue xuebao. Lixue ban |
Subjects: | |
Online Access: | https://doi.org/10.3785/j.issn.1008-9497.2018.04.013 |