Characterization of animal manure and cornstalk ashes as affected by incineration temperature
文献类型: 外文期刊
第一作者: Huang, Y.
作者: Huang, Y.;Dong, H.;Shang, B.;Zhu, Z.;Xin, H.
作者机构:
关键词: animal manure;cornstalk;incineration;temperature;ash characterization;alkali metals
期刊名称:APPLIED ENERGY ( 影响因子:9.746; 五年影响因子:9.953 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Incineration has been proposed as an alternative technology to reuse animal manure by producing energy and ash fertilizers. The objective of this study was to assess the impact of incineration temperature on the physical (ash yield) and chemical (nutrient) properties of ashes for different types of animal manure and cornstalk. The source materials were incinerated in a temperature-controlled muffle furnace at the temperature of 400, 500, 600, 700, 800 or 900 °C and the properties of the resultant ashes were determined following the procedures set by China National Standards. The results indicated that ash yield (AY, %), total nitrogen (TN) recovery and total potassium (K_2O) recovery all decreased with increasing incineration temperature. The ranges of AY, ash TN and K_2O recovery were, respectively, 43.6-30.2%, 6.9-0.6%, and 80-61% for laying-hen manure; 34.3-32.1%, 18.8-15.4%, and 95-56% for cattle manure; 25.3-20.7%, 14-0%, and 78-57% for swine manure; and 8.4-7.5%, 2.1-1.4%, and 37-19% for cornstalk. However, total phosphorus (P_2O_5) content of the ashes increased with incineration temperature, being 20.7-24.0% for swine manure, 4.5-7.5% for layer manure, and 2.7-3.4% for cornstalk. Animal manures have greater TN and P_2O_5 volatilization but less K_2O and total sodium (Na_2O) volatilization as compared to the corn-stalk. The results provide a basis for incineration as an alternative means to reuse animal manures and cornstalk and suitability of the resultant ash co-product for different applications.
分类号: TK
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