Using fluorescence spectroscopy EEM to evaluate the efficiency of organic matter removal during coagulation-flocculation of a tropical surface water (Agbo reservoir).
Using fluorescence spectroscopy EEM to evaluate the efficiency of organic matter removal during coagulation-flocculation of a tropical surface water (Agbo reservoir).
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DOI：
10.1016/j.jhazmat.2009.07.052
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发表时间：
2009-12
影响因子：
13.6
通讯作者：
D. L. Goné;J. Seidel;C. Batiot;K. Bamory;Raymond Ligban;J. Biémi
中科院分区：
文献类型：
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作者：
D. L. Goné;J. Seidel;C. Batiot;K. Bamory;Raymond Ligban;J. Biémi
利用荧光团A、C和T的荧光强度评价混凝去除象牙海岸Agbo水库原水中溶解有机碳（DOC）的效果。以硫酸铝为混凝剂进行混凝，测定DOC残留量和荧光强度。评价荧光数据的一致性，以确保没有内部效应、淬灭或增强强度影响数据。然后，从原水和澄清水之间的每个峰的有机物荧光强度的减少百分比计算出的DOC去除率，并与测量的DOC去除率相关。结果表明，测得的DOC去除率和荧光推断的DOC去除率计算的峰A（R2=0.91），峰C（R2=0.89），峰T（R2=0.92）之间的高度显着相关性，表明DOC去除率和荧光强度之间的强线性关系。此外，Dophan样（峰T）被发现是最少消除，因此，可以被认为是一个指标的DOC残留后，混凝工艺。这一结果表明，荧光光谱法提供了一个强大的分析技术，用于评估DOM去除效率在水处理。
This study evaluate the use of fluorophores A, C and T fluorescence intensities to access the coagulation efficiency for removing dissolved organic carbon (DOC) in the raw water from Agbo reservoir in Ivory Coast. A coagulation–flocculation was conducted with aluminium sulphate as coagulant and DOC residual and fluorescence intensities were acquired. The consistency of fluorescence data was evaluated to ensure that no inner-effect, quenching or enhanced intensities affect the data. Fluorescence-inferred DOC removal was then calculated in percentage terms from the decrease in organic matter fluorescence intensity for each peak between raw and clarified water and correlated with measured DOC removal. The results indicate a high significant correlation between measured DOC removal and fluorescence-inferred DOC removal calculated for peak A (R2=0.91), peak C (R2=0.89), peak T (R2=0.92) indicating a strong linear relationship between DOC removal and fluorescence intensities. Furthermore, tryptophan-like (peak T) was found to be the least eliminated and thus, may be considered as an indicator of DOC residual after coagulation–flocculation process. This result shows that fluorescence spectroscopy offers a robust analytical technique to be used to evaluate DOM removal efficiency in water treatment.