TY - JOUR
T1 - Changes in sewage sludge carbon forms along a treatment stream
AU - Smith, M.T.E.
AU - Smernik, R.J.
AU - Merrington, G.
AU - Tibbett, Mark
PY - 2008
Y1 - 2008
N2 - The behaviour and fate of macronutrients and pollutants in sewage sludge applied to the land are affected by the chemical composition of the sludge organic matter, which in turn is influenced by both sewage source and by sewage treatment processes. In this study, C-13 nuclear magnetic resonance (NMR) spectroscopy was used to characterise the organic matter of sludges collected at three different points along the treatment stream of a municipal sewage works with a domestic catchment. Sludge at the first point, an undigested liquid (UL) sludge, had a substantially different composition to the anaerobically digested (AD) and dewatered sludge cake (DC) materials, which were similar to each other. In particular, the UL sludge contained more alkyl C than the AD or DC sludges. All three sludges were found to contain mobile alkyl C that is poorly observed using the cross polarisation (CP) technique, necessitating the use of the less sensitive, but more quantitatively reliable direct polarisation (DP) technique to obtain accurate distributions of C types. (C) 2008 Elsevier Ltd. All rights reserved.
AB - The behaviour and fate of macronutrients and pollutants in sewage sludge applied to the land are affected by the chemical composition of the sludge organic matter, which in turn is influenced by both sewage source and by sewage treatment processes. In this study, C-13 nuclear magnetic resonance (NMR) spectroscopy was used to characterise the organic matter of sludges collected at three different points along the treatment stream of a municipal sewage works with a domestic catchment. Sludge at the first point, an undigested liquid (UL) sludge, had a substantially different composition to the anaerobically digested (AD) and dewatered sludge cake (DC) materials, which were similar to each other. In particular, the UL sludge contained more alkyl C than the AD or DC sludges. All three sludges were found to contain mobile alkyl C that is poorly observed using the cross polarisation (CP) technique, necessitating the use of the less sensitive, but more quantitatively reliable direct polarisation (DP) technique to obtain accurate distributions of C types. (C) 2008 Elsevier Ltd. All rights reserved.
UR - https://www.scopus.com/pages/publications/44649148355
U2 - 10.1016/j.chemosphere.2008.02.062
DO - 10.1016/j.chemosphere.2008.02.062
M3 - Article
C2 - 18472133
SN - 0045-6535
VL - 72
SP - 981
EP - 985
JO - Chemosphere
JF - Chemosphere
IS - 6
ER -
