期刊
BIORESOURCE TECHNOLOGY
卷 132, 期 -, 页码 320-326出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.01.006
关键词
Vermicomposting; Water extractable organic matter (WEOM); Fourier transform infrared (FT-IR); Excitation-emission matrix (EEM); Fluorescence regional integration (FRI)
资金
- National Natural Science Foundation of China (NSFC) [51109161]
- PhD Programs Foundation of Ministry of Education of China [20110072120029]
- Fundamental Research Funds for The Central Universities [0400219187]
- Open Analysis Fund for Large Apparatus and Equipments of Tongji University [2012055]
- National Spark Program of China [2010GA680004]
This work illustrated the characteristics and transformation of water extractable organic matter (WEOM) during vermistabilization (Eisenia fetida) of cattle dung by means of chemical and spectroscopic methods. The independent experiment conducted in triplicate was sampled at the 0, 7, 14, 21, 35, 60 and 90 days. Results showed that the DOC kept steady around 2.7 g kg(-1) after day 60 and the DOC/DON ratio decreased from 19.77 to 5.26 till the end of vermicomposting. On the other hand, vermicomposting decreased the aliphatic, proteinaceous, carbohydrates components and increased the aromaticity and oxygen-containing functional groups in the WEOM. Moreover, fluorescence spectra and fluorescence regional integration (FRI) results indicated that protein-like groups were degraded and fulvic and humic acid-like compounds were evolved during the vermicomposting process. In all, this study suggested the suitability of WEOM for monitoring the organics transformation and assessing the maturity in the vermicomposting. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
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