fly ash treatment Articles
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An immobilisation mechanism for lead in fly ash subjected to mechanochemical treatment
Mechanochemical (MC) processes immobilise heavy metals in fly ash, a desirable outcome because recycled fly ash is commonly used in the synthesis of inorganic materials. We investigate the extent of immobilisation and the mechanism of lead (Pb) leaching during MC treatment of fly ash, using lead oxide (PbO) and lead dichloride (PbCl2) as model compounds. MC treatment of the fly ash inhibited Pb ...
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Fly Ash Treatment – Plasma Torches versus Graphite Electrodes
Background Plasma generating devices have to be designed to tolerate incredibly harsh conditions during operation and in particular very high heat loads and temperatures around the arc. However, when used in the vitrification of highly chlorinated materials the challenge is even greater than in other applications. The combination of high general furnace temperatures, extremely high local ...
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A Pilot Study of Mercury Liberation and Capture from Coal-Fired Power Plant Fly Ash
The coal-fired electric utility generation industry has been identified as the largest anthropogenic source of mercury (Hg) emissions in the United States. One of the promising techniques for Hg removal from flue gas is activated carbon injection (ACI). The aim of this project was to liberate Hg bound to fly ash and activated carbon after ACI and provide high-quality coal combustion ...
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Hangzhou Jiufeng Waste Incineration Power Plant Leachate Concentrate Reduction Treatment Project - Case Study
Application: Leachate Concentrate /Fly ash washing wastewate Scale: 450 tons / day of concentrated liquid reduction, 180 tons / day of fly ash washing wastewater INTRODUCTION Everbright Domestic Waste Incineration Power Plant Project in Zhongtai, Yuhang District, Hangzhou City (hereinafter referred to as: Hangzhou Jiufeng) is a waste incineration power plant constructed by Everbright ...
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Pyrolysis of low-density polyethylene using synthetic catalysts produced from fly ash
Catalytic pyrolysis of low-density polyethylene (LDPE) was investigated using various fly ash-derived silica–alumina catalysts (FSAs). FSAs were prepared by a simple activation method that basically includes NaOH treatment of fly ash by a fusion method, followed by an aging process. A series of LDPE pyrolysis experiments was conducted and the catalytic performance of FSAs was assessed in terms of ...
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