Characterization of rice husk ash produced using different biomass combustion techniques for energy
Characterization of rice husk ash produced using different biomass combustion techniques for energy
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DOI：
10.1016/j.fuel.2015.10.086
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发表时间：
2016-02-01
期刊：
影响因子：
7.4
通讯作者：
Modolo, Regina C. E.
中科院分区：
文献类型：
--
作者：
Fernandes, Iara J.;Calheiro, Daiane;Modolo, Regina C. E.
稻壳是稻米工业加工的主要副产品，在巴西和全世界作为能源生产中的生物质广泛使用，减少了与不当处置相关的环境影响。稻壳燃烧产生的灰在许多部门具有潜在的经济应用。然而，稻壳灰（RHA）的性质在很大程度上取决于所使用的燃烧方法。本研究调查的物理，化学，热，矿物学和形态特征的三种类型的RHA，根据三种不同的方法（炉排炉，流化床，悬浮/夹带燃烧）。结果证实，燃烧条件决定了每种RHA的特性，即使所用的原材料基本相同。观察到所获得的二氧化硅的特性的主要差异在于参数比表面积（在11.35和39.27 m（2）g（-1）之间）、SiO2（在90.02和96.71重量%之间）、总碳含量（在2.18和8.63重量%之间）和所产生的二氧化硅的结构（完全无定形或部分结晶）。形态剖面，氧化物的化学成分，和比重提出了类似的结果。(C)2015由Elsevier Ltd.出版
Rice husk is the main byproduct of industrial processing of rice, and is a widely used byproduct in Brazil and worldwide as biomass in energy production, reducing environmental impacts associated with improper disposal. The ash generated in rice husk combustion has potential economic applications in a variety of sectors. However, the properties of rice husk ash (RHA) are strongly dependent on the combustion method used. This study investigates the physical, chemical, thermal, mineralogical, and morphological characteristics of three types of RHA, produced according to three distinct methods (grate furnace, fluidized bed, and suspension/entrained combustion). The results confirmed that combustion conditions define the characteristics of each RHA, even though the raw material used was essentially the same. The main differences in the characteristics of the silica obtained were observed in the parameters specific surface area (between 11.35 and 39.27 m(2) g(-1)), SiO2 (between 90.02 and 96.71 wt%), total carbon contents (between 2.18 and 8.63 wt%), and the structure of the silica produced (completely amorphous or partially crystalline). Morphological profiles, oxide chemical composition, and specific weight presented similar results. (C) 2015 Published by Elsevier Ltd.