The Degradation of Acid Orange II Throuth Non-Homogeneous Fenton Process by Using Natural Vanadium-Titanium Magnetite

• 责任者：Liang Xiaoliang (Guangzhou Institute of Geochemistry ; Chinese Academy of Sciences ; Guangzhou 510640 ; China) ; He Hongping
• 刊名：Acta Mineralogica Sinica
• 出版年：2010
• 卷期：30(1)
• 关键词：钒钛磁铁矿 ; vanadiferous ; 降解作用 ; degradation
• 页码：p.40-48
• 图表：11 illus., 1 table, 25 refs.
• 分类号：1001
• issnNo：ISSN1000-4734
• isbnNo：CN52-1045/P

The natural magnetites after magnetic separation were characterized with XRD, polarizing microscope, FT- IR and TG-DSC. The catalytic activity of natural vanadium-titanium magnetite in the degradation of acid orange II through non-homogeneous Fenton reaction was also studied in the acid condition. The results showed that the natural samples mainly contained titanomagnetite, with a small amount of ilmenite and chlorite. The present study showed that the degradation process was dominated by heterogeneous Fenton reaction, complying with pseudo-first-order rate law. 210 min after the reaction starting, percentage of the mineralization of Acid Orange II was about 30%.  The phenyl and naphthyl in Acid Orange II were gradually broken during the degradation process.