The effect of stabilization on the utilization of municipal sewage sludge as a soil amendment

Bibliographische Detailangaben
Veröffentlicht in:	Waste management (New York, N.Y.). - 1999. - 94(2019) vom: 01. Juli, Seite 27-38
1. Verfasser:	Černe, Marko (VerfasserIn)
Weitere Verfasser:	Palčić, Igor, Pasković, Igor, Major, Nikola, Romić, Marija, Filipović, Vilim, Igrc, Marina Diana, Perčin, Aleksandra, Goreta Ban, Smiljana, Zorko, Benjamin, Vodenik, Branko, Glavič Cindro, Denis, Milačič, Radmila, Heath, David John, Ban, Dean
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2019
Zugriff auf das übergeordnete Werk:	Waste management (New York, N.Y.)
Schlagworte:	Journal Article Nutrient recovery Radionuclides Recycling Sewage sludge use Soil amendment Trace metals Fertilizers Metals, Heavy Sewage mehr... Soil Soil Pollutants

Beschreibung
Zusammenfassung:	Copyright © 2019 Elsevier Ltd. All rights reserved. This study assesses the potential use of different types of stabilized sewage sludge as a soil amendment by considering their physicochemical characteristics, nutritional status, and their trace metal and radionuclide content. The concentrations of trace metals and radionuclides were determined using ICP-OES and gamma-ray spectrometry, respectively. For determining nutritional status and chemical characterization, this study followed standard ISO-recommended procedures. Data analysis revealed that anaerobic sludge contains higher concentrations of Cr, Hg, and Ni compared to aerobic and non-biologically stabilized sludge. A similar observation was observed in the case of 226Ra, 210Pb, 228Ra, and 228Th. Furthermore, the high levels of P and N in aerobic sludge suggest that biologically stabilized sludge has the potential to be a good fertilizer. In addition, the study finds strong evidence that nutrients are involved in the adsorption of metals and radionuclides onto sludge biomass. Overall, eight of the nine studied sludge samples are safe for agricultural use since the concentrations of trace metals fall well below the limits set by Croatian legislation (NN 38/08). In addition, the levels of radionuclides do not pose a radiological risk. This means that soil conditioning with sewage sludge remains a viable strategy for nutrient recovery from municipal waste, although long-term impact assessments of repeated applications are necessary
Beschreibung:	Date Completed 12.09.2019 Date Revised 12.09.2019 published: Print-Electronic Citation Status MEDLINE
ISSN:	1879-2456
DOI:	10.1016/j.wasman.2019.05.032