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...

水体中酮硝基麝香的臭氧氧化降解研究

Keywords: 人工硝基麝香,臭氧氧化,pH,过氧化氢/臭氧

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用臭氧氧化水体中的酮硝基麝香,考察pH、H2O2等因素对降解程度的影响,结果表明提高初始pH能加快酮硝基麝香的氧化降解,当pH为12时,反应时间1h,酮硝基麝香几乎完全去除,浓度为2mol/L和5mol/L的H2O2存在有利于O3分解生成·OH自由基,使得酮硝基麝香的氧化降解速率加快,当H2O2浓度超过5mol/L,H2O2会成为·OH的清除剂,降低·OH利用率;无论O3单独作用和O3/H2O2协同作用,酮硝基麝香降解符合准一级动力学规律;酮硝基麝香氧化降解产物包括甲酸、二乙酸和硝酸根等,其中硝基从苯环上脱落降低了硝基麝香对环境的风险。

References

[1]  Glaze W.H,Kang J.W,Chanpin D.H,The chemistry of water treatment processes involving ozone,hydrogen per-oxide and ultraviolet irradiation,Ozanation Science & Engineering,1987(4).
[2]  Kolpin D.W,Furlong E.T,Meyer M.T,Pharmaceuticals,hormones and other organic wastewater contaminants in US streams,1999~2000:National recon-naissance,Environmental Science and Technology,2002(6).
[3]  Rimkus G.G,Butte W,Geyer H.J,Critical considera-tion on the analysis and bioaccumulation of musk xylene and other synthetic nitro musks in fish,Chemosphere,1997(7).
[4]  Luckenbach T,Epel D,Nitromusk and polycyclic musk compounds as long-term inhibitors of cellar xenobiotic de-fense systems mediated by multidrug transports,Environmental Health Perspectives,2005(1).
[5]  Staehelin J,Hoigne J,Decomposition of ozone in water:Rate of initiation by hydroxide ions and hydrogen peroxide,Environmental Science and Technology,1982(10).

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133