| Characterization of sewage sludge organic matter using solid-state carbon-13 nuclear magnetic resonance spectroscopy. | |
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MedLine Citation:
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PMID: 12931909 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Ronald J Smernik; Ian W Oliver; Graham Merrington |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of environmental quality Volume: 32 ISSN: 0047-2425 ISO Abbreviation: J. Environ. Qual. Publication Date: 2003 Jul-Aug |
Date Detail:
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Created Date: 2003-08-22 Completed Date: 2003-11-06 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0330666 Medline TA: J Environ Qual Country: United States |
Other Details:
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Languages: eng Pagination: 1516-22 Citation Subset: IM |
Affiliation:
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Dep. of Soil and Water, Waite Agricultural Research Institute, Univ. of Adelaide, Glen Osmond, South Australia 5064, Australia. ronald.smernik@adelaide.edu.au |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Agriculture Carbon Isotopes / analysis Environmental Monitoring Environmental Pollutants / analysis* Magnetic Resonance Spectroscopy Organic Chemicals / analysis Sewage / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Carbon Isotopes; 0/Environmental Pollutants; 0/Organic Chemicals; 0/Sewage |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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