Document Detail

Characterization of sewage sludge organic matter using solid-state carbon-13 nuclear magnetic resonance spectroscopy.
MedLine Citation:
PMID:  12931909     Owner:  NLM     Status:  MEDLINE    
Six sewage sludges from five sewage treatment plants in Australia were characterized using solid-state 13C nuclear magnetic resonance (NMR) spectroscopy. Spectra were acquired both before and after removal of mineral components through treatment with hydrofluoric acid (HF). Carbon mass balance indicated that little organic matter was lost on HF treatment, which significantly improved NMR sensitivity and spectral resolution, and decreased acquisition time and hence cost of NMR analysis. Two NMR techniques were used, the standard cross polarization (CP) technique and Bloch decay (BD). The BD technique had not been applied previously to the analysis of sewage sludge. For each sludge sample, both before and after HF treatment, the BD spectrum contained significantly more alkyl carbon. Spin counting, another technique applied to sewage sludge here for the first time, showed that the BD spectra of the HF-treated sludges were quantitative, while approximately 30% of the CP NMR signal went undetected. The discrepancy between CP and BD spectra was attributed to the presence of alkyl carbon with such high molecular mobility that the efficiency of cross polarization is affected. This study shows that sewage sludge organic matter is significantly different in chemistry to soil organic matter and has implications for the application of sewage sludge to agricultural land.
Ronald J Smernik; Ian W Oliver; Graham Merrington
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of environmental quality     Volume:  32     ISSN:  0047-2425     ISO Abbreviation:  J. Environ. Qual.     Publication Date:    2003 Jul-Aug
Date Detail:
Created Date:  2003-08-22     Completed Date:  2003-11-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0330666     Medline TA:  J Environ Qual     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1516-22     Citation Subset:  IM    
Dep. of Soil and Water, Waite Agricultural Research Institute, Univ. of Adelaide, Glen Osmond, South Australia 5064, Australia.
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MeSH Terms
Carbon Isotopes / analysis
Environmental Monitoring
Environmental Pollutants / analysis*
Magnetic Resonance Spectroscopy
Organic Chemicals / analysis
Sewage / chemistry*
Reg. No./Substance:
0/Carbon Isotopes; 0/Environmental Pollutants; 0/Organic Chemicals; 0/Sewage

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