Boucher, Valérie and Revel, Jean-Claude
and Guiresse, Agnès Maritchù
and Kaemmerer, Michel
and Bailly, Jean-René
Reducing Ammonia Losses by Adding FeCl3 During Composting of Sewage Sludge.
(1999)
Water, Air, and Soil Pollution, 112 (3-4). 229-239. ISSN 0049-6979
|
(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 373kB |
Official URL: http://dx.doi.org/10.1023/A:1005074708873
Abstract
The release of ammonia nitrogen during composting of sewage sludge mixed with a lignocellulosic bulking agent leads to a reduction in the agronomic value of the final compost and to harmful effects on the environment. We propose adding a cheap salt FeCl3 which can be used without special precaution to reduce ammonia losses by decreasing pH conditions. An in-vessel co-composting experiment was conducted in a large reactor (100 L) in which FeCl3 was added to sludge mixed with a bulking agent (pine shavings and sawdust) and compared with a control mixture without FeCl3. Temperature, oxygen consumption and pH were monitored throughout the composting of both mixtures. The final balance of organic matter, organic and inorganic nitrogen permitted to conclude that the addition of FeCl3 reduced nitrogen loss (by a factor of 2.4 in relation to the control) and increased mineralisation of the organic nitrogen by 1.6.
Item Type: | Article |
---|---|
Additional Information: | Thanks to Springer Verlag. The definitive version of this document is available on Water, Air, and Soil Pollution website: https://link.springer.com/article/10.1023%2FA%3A1005074708873 |
HAL Id: | hal-01655846 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) |
Laboratory name: | |
Statistics: | download |
Deposited On: | 31 Aug 2017 09:01 |
Repository Staff Only: item control page