Title: Distribution of arsenic in PM_(10) & PM_(2.5) caused by coal combustion and its enrichment mechanism
Abstract: The distribution characteristics of arsenic in fly ash from typical coal-fired power plants in the southwest of China is studied, and find that the concentration of arsenic increase in the order of coal particles-fly ash at ESP inlet-ESP fly ash-fly ash at ESP outlet and reach its climax in fly ash at ESP outlet. The concentration of arsenic in inhalable particulates with different size-grade takes on a increasing trend overall with the decrease of the size-grade; concluded that the distribution characteristics of arsenic is a direct reaction result between fly ash and arsenic; there are four probable reaction mechanisms: arsenic is dissolved by silicate melting-mass, reacts with some chemical components in fly ash and produces stable substance, adsorbed by fly ash and condensed on the surface of fly ash.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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Cited By Count: 5
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