Carbon dioxide emission from fly ash enriched in sewage sludge
2006
Rogalski, L. | Bes, A.,University of Warmia and Mazury, Olsztyn (Poland). Dept. of Air Protection and Environmental Toxicology
Fly ash obtained from the Municipal Heating Plant in Olsztyn and sewage sludge obtained from the Municipal Wastewater Treatment Plant in Olsztyn were used in the study. Different quantities of fly ash and sewage sludge were mixed, and the treatments were additionally fertilized with NPK. Organic carbon content was determined in the material collected from particular treatments, and carbon dioxide emission was measured at 20 deg C and at moisture content of 40, 60 and 80 percent of total available water capacity. Samples were incubated in a controlled environment chamber for 1, 2 and 3 days. It was found that carbon dioxide emission was significantly affected by sewage sludge rates and moisture content. The highest CO2 emission levels were recorded in substratum with a moisture content of 80 percent, containing 50 percent of sludge
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