Spectroscopic characterization of organic matter of a soil and vinasse mixture during aerobic or anaerobic incubation

Journal Article · Mon Jun 15 00:00:00 EDT 2009 · Waste Management

DOI:https://doi.org/10.1016/j.wasman.2008.12.009· OSTI ID:21269334

Doelsch, Emmanuel ^[1]; Masion, Armand ^[2]; Cazevieille, Patrick ^[3]; Condom, Nicolas ^[4]

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1. CIRAD, Environmental Risks of Recycling Research Unit, Aix-en-Provence, F-13545 (France)
2. CEREGE, Aix-Marseille University, CNRS, CDF, IRD, Europole Mediterraneen de L'Arbois, BP 80, 13545 Aix-en-Provence (France)
3. CIRAD Environmental Risks of Recycling Research Unit, TA 70/01, Avenue Agropolis, F-34 398, Montpellier Cedex 5 (France)
4. 29 bd Louis Blanc, F-34000 Montpellier (France)

Mineralization potentials are often used to classify organic wastes. These methods involve measuring CO{sub 2} production during batch experiments, so variations in chemical compounds are not addressed. Moreover, the physicochemical conditions are not monitored during the reactions. The present study was designed to address these deficiencies. Incubations of a mixture of soil and waste (vinasse at 20% dry matter from a fermentation industry) were conducted in aerobic and anaerobic conditions, and liquid samples obtained by centrifugation were collected at 2 h, 1 d and 28 d. Dissolved organic carbon (DOC) patterns highlighted that: there was a 'soil effect' which increased organic matter (OM) degradation in all conditions compared to vinasse incubated alone; and OM degradation was faster under aerobic conditions since 500 mg kg{sup -1} of C remained after aerobic incubation, as compared to 4000 mg kg{sup -1} at the end of the anaerobic incubation period. No changes were detected by Fourier transform infrared spectroscopy (FTIR) between 2 h and 1 d incubation. At 28 days incubation, the FTIR signal of the aerobic samples was deeply modified, thus confirming the high OM degradation. Under anaerobic conditions, the main polysaccharide contributions ({nu}(C-O)) disappeared at 1000 and 1200 cm{sup -1}, as also confirmed by the {sup 13}C NMR findings. Under aerobic incubation, a 50% decrease in the polysaccharide proportion was observed. Under anaerobic conditions, significant chemical modifications of the organic fraction were detected, namely formation of low molecular weight organic acids.

• OSTI ID: 21269334
• Journal Information: Waste Management, Vol. 29, Issue 6; Other Information: DOI: 10.1016/j.wasman.2008.12.009; PII: S0956-053X(08)00427-3; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
AEROBIC CONDITIONS
ANAEROBIC CONDITIONS
CARBON DIOXIDE
CENTRIFUGATION
FERMENTATION
FOURIER TRANSFORM SPECTROMETERS
INCUBATION
INFRARED SPECTRA
NUCLEAR MAGNETIC RESONANCE
ORGANIC MATTER
ORGANIC WASTES
POLYSACCHARIDES
SOILS
WASTE MANAGEMENT