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...
环境化学  2015 

蒽醌活化过硫酸盐降解罗丹明B

Keywords: 过硫酸盐活化,蒽醌类有机质,罗丹明B

Full-Text   Cite this paper   Add to My Lib

Abstract:

本文考察了蒽醌活化过硫酸盐过程中降解罗丹明B的特征.实验发现,Fe(Ⅲ)、不同种类和含量的蒽醌、pH值变化、添加自由基淬灭剂以及光照/非光照等不同条件下,对过硫酸盐活化过程中降解罗丹明B特征均产生不同程度的影响.结果表明,体系中不同含量醌活化过硫酸盐的条件下,罗丹明B表现出不同的降解特征;酸性和碱性条件下,过硫酸盐活化过程中氧化降解RhB的效能并无明显差别;相对于甲醇,叔丁醇可能是更有效的半醌自由基淬灭剂;含氧化敏感官能团结构的蒽醌类有机物AQS和AQDS能有效活化过硫酸盐,促进了过硫酸盐的氧化降解效能,使得罗丹明B脱色程度达到90%以上,这主要是反应体系中蒽醌类有机质能有效活化过硫酸盐生成过硫酸根自由基,使过硫酸盐的氧化性得到显著提高.Fe(Ⅲ)和蒽醌耦合作用对过硫酸盐氧化罗丹明B的活化作用比单纯的蒽醌活化效果更显著.

References

[1]  Rao Y F, Qu L, Yang H, et al. Degradation of carbamazepine by Fe(Ⅱ)-activated persulfate process[J]. Journal of Hazardous Materials, 2014, 268:23-32
[2]  Liang C, Liang C P, Chen C C. pH dependence of persulfate activation by EDTA/Fe(Ⅲ) for degradation of trichloroethylene[J]. Journal of Contaminant Hydrology, 2009, 106(3-4): 173- 182
[3]  Waldemer R H, Tratnyek P G, Johnson R L, et al. Oxidation of chlorinated ethenes by heat activated persulfate: kinetics and products[J]. Environ Sci Technol, 2007, 41(3): 1010-1015
[4]  刘国强, 王斌楠, 廖云燕, 等. 热活化过硫酸盐降解水中的2-氯苯酚[J]. 环境化学, 2014, 33(8): 1396-1403
[5]  Kang S H, Choi W. Oxidative degradation of organic compounds using zero-valent iron in the presence of natural organic matter serving as an electron shuttle[J]. Environ Sci Technol, 2009, 43(3): 878-883
[6]  Leng Y, Guo W, Shi X, et al. Polyhydroquinone-coated Fe3O4 nanocatalyst for degradation of rhodamine B based on sulfate radicals[J]. Industrial & Engineering Chemistry Research, 2013, 52 (38):13607-13612
[7]  Taguchi K, Fujii S, Yamano S, et al. An approach to evaluate two-electron reduction of 9, 10-phenanthraquinone and redox activity of the hydroquinone associated with oxidative stress[J]. Free Radical Bio Med, 2007, 43(5):789-799
[8]  Chen R, Pignatello J J. Role of quinone intermediates as electron shuttles in Fenton and photoassisted Fenton oxidations of aromatic compounds[J]. Environ Sci Technol, 1997, 31(8): 2399-2406
[9]  朱维晃, 袁博, 杨瑞. 蒽醌类溶解有机质和模拟太阳光耦合驱动下的Fenton法对罗丹明B脱色特征的影响因素研究[J]. 环境科学学报, 2015, 35(2): 508-513
[10]  Fang G, Gao J, Dionysiou D D, et al. Activation of persulfate by quinones: free radical reactions and implication for the degradation of PCBs[J]. Environ Sci Technol, 2013, 47(9): 4605-4611
[11]  Furman O S, Teel A L, Watts R J. Mechanism of base activation of persulfate[J]. Environ Sci Technol, 2010, 44(16):6423-6428
[12]  杨世迎; 陈友媛; 胥慧真, 等. 过硫酸盐活化高级氧化新技术[J]. 化学进展, 2008, 20 (9): 1433-1438
[13]  Liang C, Wang Z S, Bruell C J. Influence of pH on persulfate oxidation of TCE at ambient temperatures[J]. Chemosphere, 2007, 66 (1): 106-113
[14]  Zou J, Ma J, Chen L, et al. Rapid acceleration of ferrous iron/peroxymonosulfate oxidation of organic pollutants by promoting Fe(Ⅲ)/Fe(Ⅱ) cycle with hydroxylamine[J]. Environ Sci Technol, 2013, 47 (20): 11685-11691

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133