Sample Preparation for Estimating Leachable Chromium(VI) in Coal Fly-ash
نویسندگان
چکیده
منابع مشابه
Estimating Cr(VI) in Coal-Derived Fly-Ash
The two common chromium oxidation states, Cr(III) and Cr(VI), differ greatly in their impacts on the environment and human health. Cr(III) in most common forms in the environment is normally not a major concern to public health because it is not very soluble and therefore poorly adsorbed by the body. In contrast, Cr(VI) in the form of chromates is usually readily soluble and, because of its oxi...
متن کاملPreparation and characterization of carbon-enriched coal fly ash.
Carbon-enriched fractions have been obtained from two coal fly ash (FA) samples. The FA came from two pulverized-coal fired power stations (Lada and Escucha, Spain) and were collected from baghouse filters. Sieving was used to obtain carbon-enriched fractions, which were further subjected to two beneficiation processes: acid demineralization using HCl and HF, and oil agglomeration using soya oi...
متن کاملThe respiratory toxicity of coal fly ash
The aim of this study was to compare the relative respiratory toxicity of CFA samples obtained from three Chinese coal-burning power stations to CFA obtained from a UK coal-burning power station; both bulk and respirable PM10 samples were tested. In order to elucidate CFA toxicity, a multi-disciplinary approach was taken, thereby considering geochemical aspects of the fly ash as well as biochem...
متن کاملProduction geopolymer materials by coal fly ash
Coal ash is the main waste from power plant. It is estimated that the consumption of the coal for power plant will increase to 240 million tons each year and the coal ash wastes will produce more than 2 million tons per year. Although the utilization of coal fly ash can be reached 74.1%, large amount of coal fly ash and bottom ash still cannot be utilized. The purpose of this research is to dev...
متن کاملHealth aspects of coal fly ash
Employees of coal-fired power stations and people living nearby as well as those involved in the shipment and processing of coal fly ash can be exposed to coal fly ash (pulverised fuel ash or “PFA”). An extensive research program was carried out in order to map such exposure and its effects. Particle size distribution, chemical composition, quartz, radioactivity, emission factors and fugitive d...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 2013
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.62.1023