Degradation of Cu (Ⅱ)-EDTA Chelated Wastewater by Using Tourmaline/H2O2 System
详细信息
- 责任者：Yao Zhitong (Department of Ocean Science and Engineering ; Zhejiang University ; Hangzhou 310027 ; China) ; Zhang Lu
- 刊名：Acta Mineralogica Sinica
- 出版年：2009
- 卷期：29(4)
- 关键词：电气石 ; tourmaline ; 水处理 ; water treatment
- 页码：p.435-441
- 图表：12 illus., 20 refs.
- 分类号：1800
- issnNo：ISSN1000-4734
- isbnNo：CN52-1045/P
摘要
The treatment of wastewater containing chelated Cu (Ⅱ)-EDTA by using tourmaline/H2O2 system was investigated. It showed that the removal rates of COD and Cu2+ increased with increasing tourmaline dosage, hydroxyl radical dosage and temperature. The largest removal rates are found at pH3. Ultraviolent-visible spectra showed that the structure of chelated Cu (Ⅱ)-EDTA decomposes to low-molecule organic matters. The XRD patterns and FTIR spectra of tourmaline before and after reaction indicated that the tourmaline chelated with intermediate products of EDTA in the degradation. Kinetic research suggested that the reaction was pseudo-first order. The reaction of tourmaline/H2O2 is similar to Fenton reaction.