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首页> 外文期刊>Environmental Science & Technology >Photomineralization of Effluent Organic Phosphorus to Orthophosphate under Simulated Light Illumination
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Photomineralization of Effluent Organic Phosphorus to Orthophosphate under Simulated Light Illumination

机译：模拟光照射下的流出物有机磷对正磷酸盐的光致作用

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摘要

Organic phosphorus (OP), one of the main forms of phosphorus in effluent from biological wastewater treatment plants, may contribute to the bioavailable phosphorus pool as well as water eutrophication. However, little is known about the photomineralization of OP or the possible impacts on the phosphorus cycle in water bodies. Herein, the photomineralization of effluent OP was investigated. An increase in orthophosphate concentration was observed under illumination. The 31P liquid nuclear magnetic resonance spectra demonstrated that the release of orthophosphate resulted from photo mineralization of OP. Furthermore, the photoproduced hydroxyl radicals ((OH)-O-center dot) were proved to play a dominant role in the OP photomineralization. Nitrate, effluent organic matter (EfOM), and Fe(III) presented in effluent were the main chromophores for center dot OH photoproduction, and their contributions to (OH)-O-center dot production and photomineralization of OP followed the order: nitrate EfOM Fe(III). Additionally, the carbonate (or bicarbonate) in the effluent and high pH were unfavorable for OP photomineralization. The present study revealed the photomineralization behavior of OP in actual effluent, suggesting that photomineralization of OP might contribute to eutrophication and may play a non-negligible role in phosphorus turnover in water bodies.
机译：来自生物废水处理厂的流出物中磷的主要形式的有机磷（OP）可能有助于生物可利用的磷池以及水富营养化。然而，关于OP的光矿质化或可能影响水体中的磷循环的可能影响很少。在此，研究了流出物OP的光甲型化。在照明下观察到正磷酸盐浓度的增加。 31P液态核磁共振谱证明，透明磷酸盐由OP的光矿化引起。此外，证明了光推羟基 - 基团（（OH）-O-中心点）在OP光谱中起显性作用。出水中呈现的硝酸盐，污水有机物（EFOM）和Fe（III）是中心点OH光保护的主要发色团，它们对（OH）-O中心点的贡献，OP的-O中心点产生和光矿化术后：硝酸盐> EFOM> FE（III）。另外，在流出物和高pH中的碳酸盐（或碳酸氢盐）对于OP光族化是不利的。本研究揭示了OP在实际流出物中的光致矿质化行为，表明OP的光归化可能有助于富营养化，并且可能在水体中的磷转运中起着不可忽略的作用。

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  • 来源
    《Environmental Science & Technology》 |2019年第9期|4997-5004|共8页
  • 作者

    Zhang Xin; Li Jing; Fan Wen-Yuan; Sheng Guo-Ping;

  • 作者单位

    Univ Sci & Technol China Dept Appl Chem CAS Key Lab Urban Pollutant Convers Hefei 230026 Peoples R China;

    Univ Sci & Technol China Dept Appl Chem CAS Key Lab Urban Pollutant Convers Hefei 230026 Peoples R China;

    Univ Sci & Technol China Dept Appl Chem CAS Key Lab Urban Pollutant Convers Hefei 230026 Peoples R China;

    Univ Sci & Technol China Dept Appl Chem CAS Key Lab Urban Pollutant Convers Hefei 230026 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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