کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
684110 | 889015 | 2009 | 8 صفحه PDF | دانلود رایگان |

To evaluate the use of coal fly ash (CFA) on the decomposition efficiency of food waste, synthetic food waste was mixed with lime at 1.5% and 3% (equivalent to 0.94% and 1.88% CaCO3, respectively), CFA at 5%, 10% and 15% with lime so as to achieve CaCO3 equivalent of 1.88% and composted for 42 days in a thermophilic 20 l composter with two replicates each. Alkaline materials at 1.88% CaCO3 equivalent successfully buffered the pH during the composting and enhanced the decomposition efficiency. When these buffering was achieved with CFA + lime, the composting period could be shortened to ∼28 days compared with ∼42 days in 3% lime. Organic decomposition in terms of CO2 loss, carbon turnover and nitrogen transformation were significantly higher for treatments with 1.88% CaCO3 equivalent. Nutrient transformations and compost maturity parameters indicated that addition of CFA (5–10%) with lime at 1.88% CaCO3 equivalent enhances the decomposition efficiency and shortens the composting period by 35%.
Journal: Bioresource Technology - Volume 100, Issue 13, July 2009, Pages 3324–3331