Environmental Impact Assessment of Lignite Fly Ash and Its Utilization Products as Recycled Hazardous Wastes on Surface and Ground Water Quality

Fly ash from a Mexican mineral coal I: Mineralogical and chemical characterization

“…The relevant conclusions from these studies [1] were as follows: (1) the management of fly ash produced by coalfired power plants is considered a major problem in many parts of the world, (2) fly ash should be used as much as possible to reduce the environmental inventory, (3) better understanding is needed about the mobilization of potentially hazardous chemical elements from ash residue and the environmental impact of their disposal and use, and (4) new, efficient applications of fly ash as a raw material are needed. To discover the potential applications of fly ash, it must be characterized completely [2], as different conditions during incineration give rise to different coal fly ash properties [3].…”

“…Because trace elements existing in fly ash can leach out and contaminate soil, as well as surface and groundwater, their study has become important for environmental protection [1]. Fly ashes from several countries were studied, including those from Spain, Italy, the Netherlands [5,6], Greece [7], Turkey [8], England [9][10][11], Russia [12], China [13], the United States [4,14,15] and Argentina [16].…”

Synergistic Sintering of Lignite Fly Ash and Steelmaking Residues towards Sustainable Compacted Ceramics

“…Nowadays, limited amounts of FA are being reused, while more than 80% of the overall FA output is directly deposited into ponds and landfills. However, the contamination from FA deposits can easily occur, because the FA particles usually contain potentially hazardous trace elements (heavy metals) due to their high surface area [8,9]. Subsequently, there are serious concerns that this situation will possibly cause severe and irreversible long-term environmental effects.…”

Adsorção de corantes aniônicos de solução aquosa em cinza leve de carvão e zeólita de cinza leve de carvão

“…O tamanho das partículas das cinzas é dependente do tipo de sistemas de filtros utilizados na usina (Polic et al, 2005).…”