Fluorescence quotient of excitation–emission matrices as a potential indicator of organic matter behavior in membrane bioreactors
Fluorescence quotient of excitation–emission matrices as a potential indicator of organic matter behavior in membrane bioreactors
复制标题
激发发射矩阵的荧光商作为膜生物反应器中有机物行为的潜在指标
DOI：
10.1039/c7ew00270j
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发表时间：
2018-02
期刊：
影响因子：
--
通讯作者：
Xia Huang
中科院分区：
文献类型：
--
作者：
Kang Xiao;Shuai Liang;Aihua Xiao;Ting Lei;Jihua Tan;Xiaomao Wang;Xia Huang
利用激发-发射矩阵（EEM）荧光光谱揭示有机物性质的潜力尚未得到充分利用。建立了一种荧光商（FQ）方法，用于比较不同EEM光谱，从而反映基于EEM的废水处理过程中有机物的差异性质。FQ被定义为不同状态（例如降解之前和之后）或不同形式（例如在污泥中、在上清液中或在作为污垢的膜上）的有机物质的两个EEM光谱的标准化元素商。将该方法应用于两个全规模的膜生物反应器，计算了进水有机物、污泥上清液有机物、胞外聚合物和膜污染物之间的多个FQs。统计分析证实，作为荧光激发和发射波长的函数的FQ的分布在突出差异EEM特性方面是显著有意义的，这使得能够在激发-发射图上清楚地描绘不同有机物的活性区域。因此，从EEM的角度来看，这可能表明有机物的特定行为（如生物转化，污泥/水相分布和膜污染）的差异倾向。FQ方法为EEM数据开发提供了一个潜在的工具，以反映污水处理过程中的有机物行为。
The potential of using excitation–emission matrix (EEM) fluorescence spectroscopy in revealing organic matter properties has yet to be fully exploited. A fluorescence quotient (FQ) method was established to graphically compare different EEM spectra and hence, reflect the differential properties of organic matter in a wastewater treatment process on the basis of EEM. FQ is defined as a standardized element-wise quotient of two EEM spectra for organic matter in different states (e.g. before and after degradation) or in different forms (e.g. in sludge, in supernatant or on membranes as foulants). This method was applied to two full-scale membrane bioreactors, with multiple FQs calculated among the influent organics, sludge supernatant organics, extracellular polymeric substances and membrane foulants. Statistical analyses confirmed that the distribution of FQ as a function of the fluorescence excitation and emission wavelengths was significantly meaningful in highlighting the differential EEM characteristics, which enabled a clear depiction of the active regions of the different organics on an excitation–emission map. This might therefore indicate the differential propensity for a specific behavior of organic matter (such as biotransformation, sludge/water-phase distribution and membrane fouling) from the perspective of EEM. The FQ method provides a potential tool for EEM data exploitation to reflect organic matter behavior in wastewater treatment processes.
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影响因子：
2.7
作者：
Kothawala, Dolly N.;Murphy, Kathleen R.;Tranvik, Lars J.
通讯作者：
Tranvik, Lars J.
影响因子：
6.4
作者：
Sheng Huang;Xin Zhao;Yanqiu Sun;Jianli Ma;Xiaofeng Gao;Tian Xie;Dongsheng Xu;Yi Yu;
通讯作者：
Sheng Huang;Xin Zhao;Yanqiu Sun;Jianli Ma;Xiaofeng Gao;Tian Xie;Dongsheng Xu;Yi Yu;
DOI：
10.3390/s140101771
发表时间：
2014-01-20
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
Yang L;Shin HS;Hur J
通讯作者：
Hur J
DOI：
--
发表时间：
2006
期刊：
--
影响因子：
--
作者：
S. Judd
通讯作者：
S. Judd
影响因子：
12.8
作者：
Xiao-mao Wang;Xiao-yan Li
通讯作者：
Xiao-mao Wang;Xiao-yan Li