Fluorescence-based rapid assessment of the biological stability of landfilled municipal solid waste

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• 作者：Huayong Wu ; Zeyu Zhou ; Yaxin Zhang ; Tan Chen ; Hongtao Wang ; ^{htwang@tsinghua.edu.cn} ; Wenjing Lu
• 关键词：Water-extractable organic matter (WEOM) ; Biological stability ; Fluorescence Excitation&ndash ; Emission Matrix (EEM) ; Fluorescence regional integration (FRI) ; Parallel factor analysis (PARAFAC)
• 刊名：Bioresource Technology
• 出版年：2012
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：April, 2012
• 卷：110
• 期：Complete
• 页码：174-183
• 文件大小：1207 K

摘要

Fluorescence Excitation-Emission Matrix (EEM) combined with fluorescence regional integration (FRI) and parallel factor analysis (PARAFAC) was employed to tracing the properties and behavior of the water-execrable organic matter (WEOM) from landfilled municipal solid waste (MSW) for assessing the biological stability. The 3-components PARAFAC model developed showed the WEOM dominated by two humic-like materials (components C1 and C2) which were highly correlated and behave similarly in this work, and a protein-like material (component C3). The percent fluorescence response P_i,n from FRI and maximum fluorescence intensity F_max of the components from PARAFAC proved to be sensitive indicators of the bulk properties and transformation of WEOM during landfill stabilization. C1/C3 F_max ratio was found to be the most sensitive indicator of the biostablization state of the landfilled MSW and can be considered a reliable parameter. These results reveal that EEM-PARAFAC/FRI enabled a rapid and accurate assessment of biological stability of landfilled MSW.