In the present paper a novel process of the coal ash treatment was developed and analyzed:
a high-pressure autoclave HCl leaching of the coal bottom and fly ash from an Omsk coal …

The coal fly ash (CFA) that is produced by coal fired power plants in Israel is alkaline and
contains aluminum that can be leached by different acids. In this work, the mechanism of …

Coal waste is the largest industrial solid waste generated from coal preparation plants
during the processing and cleaning of coal for electric power generation. Aluminum oxide …

During hydrochloric acid leaching of bauxite reaction residue (BRR) produced from
coagulant industry, the effects of hydrochloric acid concentration, liquid solid ratio and silica …

Aluminum was leached out from coal fly ash by pressure acid-leaching method. The effects
of coal fly ash size, sulfuric acid concentration, reaction time and reaction temperature on …

Fly ash from municipal waste incinerators constitutes an environmental problem, as it is
polluted with heavy metals. By extracting the heavy metals from fly ashes with an acid …

Iron contained in coal fly ash of the Ekibastuz power station is distributed between magnetite
and hematite. XRD data showed that~ 80 wt% of iron is contained in magnetite and~ 20 wt …

The use of low-grade coal in thermal power stations is leading to environmental pollution
due to the generation of large amounts of fly ash, bottom ash, and CO2 besides other …

Clean and efficient extraction of aluminum hydroxide from coal fly ash has environmental
and economic benefits. The current study mainly aimed to develop an efficient and …

Sandy grade alumina is a valuable intermediate material that is mainly produced by the
Bayer process and used for manufacturing primary metallic aluminum. Coal fly ash is …