全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

光助类Fenton降解结晶紫染料废水

DOI: 10.3969/j.issn.1000-5013.2005.03.019

Keywords: Photo-Fenton, 过氧化氢, 染料废水, 结晶紫, 降解

Full-Text   Cite this paper   Add to My Lib

Abstract:

研究阳离子染料结晶紫在UV/Fe3+/H2O2体系下的均相降解,考察pH值、H2O2和Fe3+用量等条件对脱色率及COD去除率的影响.结果表明,紫外光能促进染料的脱色与矿化.当pH=2.70,H2O2=340mg?L-1,Fe3+=28mg?L-1时,结晶紫废水在80min下的脱色率大于99%,COD去除率达到60.1%.H2O2分次投加时,COD去除率可提高到70.6%,反应表观活化能测定为79.0kJ?mol-1.反应20min后,水样的紫外-可见光谱表明,染料分子共轭结构被破化,但仍以小分子化合物存在.水样中的BOD5/COD由0.034提高到0.320,可生化性大大改善.

References

[1]  杨岳平, 吴星义, 徐新华. 印染废水的UV-Fenton氧化处理研究 [J]. 高校化学工程学报, 2001(3):242-246.doi:10.3321/j.issn:1003-9015.2001.03.007.
[2]  郑冀鲁, 范娟, 阮复昌. 印染废水混凝脱色技术的分子结构基础 [J]. 环境污染与防治, 2002(1):23-25.doi:10.3969/j.issn.1001-3865.2002.01.009.
[3]  张乃东, 吕明, 孟祥斌. Fenton 体系中COD的测定 [J]. 哈尔滨商业大学学报, 2001(2):27-28.doi:10.3969/j.issn.1672-0946.2001.02.010.
[4]  韦朝海, 陈传好, 王刚. Fenton试剂催化氧化降解含硝基苯废水的特性 [J]. 环境科学, 2001, (5):60-64.doi:10.3321/j.issn:0250-3301.2001.05.014.
[5]  Lee Y, Lee C, Yoon J. High temperature dependence of 2, 4-dichlorophenoxyacetic acid degradation by Fe3+/H2O2 system [J]. Chemosphere, 2003.63-971.
[6]  TAHA M E, Moustafa M E. Homogeneous degradation of 1, 2, 9, 10-tetrachlorodecane in aqueous solutions using hydrogen peroxide, iron and UV light [J]. Chemosphere, 2002, (3):343-348.doi:10.1016/S0045-6535(01)00305-8.
[7]  Pignatello J. Dark and photoassisted iron(3+)-catalyzed degradation of chlorophenoxy herbicides by hydrogen peroxide [J]. Environmental Science and Technology, 1992(5):944-951.
[8]  Wu Kaiqun, Xie Yinde, Zhao Jincai. Photo-Fenton degradation of a dye under visible light irradiation [J]. Journal of Molecular Catalysis A:Chemical, 1999(1):77-84.doi:10.1016/S1381-1169(98)00354-9.
[9]  Anabela M, Luis M, Rui A. Fenton oxidation of cork cooking wastewater-overall kinetic analysis [J]. Water Research, 2003, (13):3061-3069.doi:10.1016/S0043-1354(03)00178-7.
[10]  Jesus B H, Joaquin T, Joaquin R D. Comparison of the degradation of p-hydroxybenzoic acid in aqueous solution by several oxidation processes [J]. Chemosphere, 2001.351-359.doi:10.1016/S0045-6535(00)00136-3.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133