Regenerative Energie
Composting is widely used as a biosolids stabilisation process, which also results in the reduction of human pathogens to very low levels. However, bacterial pathogens such as Salmonella and E. coli can survive composting process in low numbers, under certain conditions. Potential risks to public health posed by the regrowth of surviving Salmonella in biosolids are a cause of concern.
The purpose of this study was to evaluate the public health risks posed by the regrowth of Salmonella in composted biosolids. Salmonella regrowth potential tests were carried out on composted biosolids stored for 2 to 117 weeks. Maximum growth of seed Salmonella typhimurium observed in non-sterilised composted biosolids was 9.8 x 102 g-1. Indigenous compost microflora was found to be the single major factor responsible for inhibiting Salmonella regrowth. In the absence of competing indigenous microflora the maximum growth of S. typhimurium was more than 6 x 106 g-1. Long term storage was found to result in an increased pathogen regrowth potential. An assessment of potential public health risks associated with the use of contaminated compost was carried out on the basis of data produced in this study. The probability of infection in an event of Salmonella regrowth was found to be higher than the acceptable limits for both pica children and adults. Consequently, it is suggested that monitoring for Salmonella should be carried out prior to the distribution of biosolids.
| Copyright: | © European Compost Network ECN e.V. |
| Quelle: | ORBIT 2003 (Mai 2003) |
| Seiten: | 6 |
| Preis: | € 3,00 |
| Autor: | J Sidhu R.A. Gibbs Prof. Goen Ho |
| Diesen Fachartikel kaufen... (nach Kauf erscheint Ihr Warenkorb oben links) | |
| Artikel weiterempfehlen | |
| Artikel nach Login kommentieren | |
Hochlauf der Wasserstoffwirtschaft
© Lexxion Verlagsgesellschaft mbH (8/2024)
Überblick über und Diskussion der Maßnahmen zum beschleunigten Ausbau
der Wasserstoffinfrastruktur in Deutschland
Die innerstaatliche Umsetzung des Pariser Klimaschutzübereinkommens
- ein Rechtsvergleich
© Lexxion Verlagsgesellschaft mbH (8/2024)
Like all public international law treaties, the Paris Climate Accords rely on national law for their implementation. The success of the agreement therefore depends, to a large extent, on the stepstaken or not taken by national governments and legislators as well as on the instruments and mechanisms chosen for this task. Against this background, the present article compares different approaches to the implementation of the Paris Agreement, using court decisions as a means to assess their (legal) effectiveness.
Klimaschutzrecht und Erzeugung erneuerbarer Energien in der Schweiz
© Lexxion Verlagsgesellschaft mbH (8/2024)
Verschachtelte Gesetzgebung unter politischer Ungewissheit