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首页> 外文期刊>Journal of King Saud University >Fly ash properties, characterization, and applications: A review
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Fly ash properties, characterization, and applications: A review

机译：粉煤灰属性，表征和应用：综述

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Fly ash (FA) is the principal industrial waste byproduct from the burning of solid fuels. FA is a powdery solid that is constituted mostly of unburned carbon (UC), metal oxides (Si, Fe, Ca, and Al), and other inorganic substances. UC is an inexpensivesource of activated carbon that plays an important role in FA adsorption capacity. Due to the broad variability in its composition, FA characterization is challenging. Accordingly, FA is categorized into class F, and class C according to the maximum and minimum % of SiO2, Al2O3, Fe2O3, and SO3. X-ray diffraction, and fluorescence, and scanning microscopy with an energy dispersive spectroscopy are the common techniques employed to characterize FA. FA was used to remove hazardous contaminants, organic and inorganic chemicals, and dyes from wastewater. Furthermore, investigations revealed that FA has promising potential beneficial usage in the construction industry, particularly in cement and concrete production. FA has been added to cement in a reduced nanosize form giving good durability and minimizing concrete pores size to resist adverse environment. In this article, significant properties, characterization methods and, applications of FA were summarized.
机译：飞灰（FA）是来自燃烧固体燃料的主要工业废物副产品。 Fa是粉末状固体，主要由未燃烧的碳（UC），金属氧化物（Si，Fe，Ca和Al）和其他无机物质构成。 UC是一个inexpens补胆碱源的激活碳，在Fa吸附容量中起着重要作用。由于其组成的广泛变异性，FA表征是具有挑战性的。因此，根据SiO2，Al2O3，Fe2O3和SO3的最大和最小百分比，FA分为F类和C类。 X射线衍射和荧光和扫描显微镜，具有能量分散光谱是用于表征FA的常用技术。 FA用于去除有害污染物，有机和无机化学品，以及废水中的染料。此外，调查透露，FA在建筑业的潜在有利使用，特别是在水泥和混凝土生产中。已添加到降低纳米型形式的水泥中，提供良好的耐用性，并使混凝土孔径最小化以抵抗不利环境。在本文中，总结了FA的重大特性，表征方法和应用。

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