期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 3, 页码 2322-2327出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.10.085
关键词
Municipal solid waste (MSW); Dissolved organic matter (DOM); Dissolved organic carbon (DOC); Fourier transform infrared (FTIR) spectra; Excitation-emission matrix (EEM) spectra
资金
- National Natural Science Foundation of China [51078340, 40901248]
- National Public Benefit (Environmental) Research Foundation of China [200909079]
- Heilongjiang Provincial Natural Science Foundation of China [C200901]
For the purpose of evaluating the stability of municipal solid waste (MSW) excavated from a landfill, dissolved organic matter was extracted and characterized by physicochemical and spectroscopic methods.. Results showed that dissolved organic carbon concentration, ratio of dissolved organic carbon to dissolved organic nitrogen, and specific ultraviolet absorbance at 254 nm were in the range of 0.383-3.502 g kg(-1), 0.388-3.693 and 2.700-4.629 L mg(-1) m(-1), respectively, indicating the stability of MSW. Results obtained from Fourier transform infrared spectra have demonstrated that the stability of excavated MSW was characterized by disappearance of some easily biodegradable compounds; and the 1635/1406 ratio varied from 0.979 to 1.840 and was higher than that of the matured compost. The excitation-emission matrix spectra have shown that the principal components in excavated MSW comprised humic substances and the MSW was stable by the presence of a peak with wavelength pair of similar to 280/420 nm. (C) 2010 Elsevier Ltd. All rights reserved.
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