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Title: Molecular composition of recycled organic wastes, as determined by solid-state {sup 13}C NMR and elemental analyses

Highlights: • Model estimated the molecular C components well for most RO wastes. • Molecular nature of organic matter in RO wastes varied widely. • Molecular composition by NMR modelling preferable to extraction techniques. • Some model shortcomings in estimating molecular composition of biochars. • Waste molecular composition important for carbon/nutrient outcomes in soil. - Abstract: Using solid state {sup 13}C NMR data and elemental composition in a molecular mixing model, we estimated the molecular components of the organic matter in 16 recycled organic (RO) wastes representative of the major materials generated in the Sydney basin area. Close correspondence was found between the measured NMR signal intensities and those predicted by the model for all RO wastes except for poultry manure char. Molecular nature of the organic matter differed widely between the RO wastes. As a proportion of organic C, carbohydrate C ranged from 0.07 to 0.63, protein C from <0.01 to 0.66, lignin C from <0.01 to 0.31, aliphatic C from 0.09 to 0.73, carbonyl C from 0.02 to 0.23, and char C from 0 to 0.45. This method is considered preferable to techniques involving imprecise extraction methods for RO wastes. Molecular composition data has great potential as amore » predictor of RO waste soil carbon and nutrient outcomes.« less
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [3] ;  [5] ;  [6] ;  [2]
  1. Environmental Futures Centre, School of Environment, Griffith University, Nathan, QLD 4111 (Australia)
  2. (Australia)
  3. Environmental Futures Centre, School of Biomolecular and Physical Sciences, Griffith University, Nathan, QLD 4111 (Australia)
  4. School of Earth and Environmental Sciences, James Cook University, Cairns, QLD 4870 (Australia)
  5. Formerly NSW Department of Primary Industries, Richmond, NSW 2753 (Australia)
  6. Graduate School of Environment, Macquarie University, North Ryde, NSW 2109 (Australia)
Publication Date:
OSTI Identifier:
22300311
Resource Type:
Journal Article
Resource Relation:
Journal Name: Waste Management; Journal Volume: 33; Journal Issue: 11; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CARBON; CARBON 13; CARBON SEQUESTRATION; CARBONYLS; CHARS; EXTRACTION; FOWL; LIGNIN; MANURES; NUCLEAR MAGNETIC RESONANCE; ORGANIC MATTER; SIMULATION; SOILS; SOLIDS