Alkaline bioleaching of municipal solid waste incineration fly ash by autochthonous extremophiles

Bioleaching of incineration fly ash by Aspergillus niger – precipitation of metallic salt crystals and morphological alteration of the fungus

“…When in contact with water, these hazardous constituents may potentially be leached [25] . Due to its toxicity, most of the fly ash is landfilled after detoxification, or recycled as a secondary material [26] . Since some of the elements (e.g.…”

Selection of wet digestion methods for metal quantification in hazardous solid wastes

“…However, due to its high concentration, the ash may be 33 considered an artificial ore from which metal values may be 34 derived. In addition, chemically treating and detoxifying the ash 35 improves its utilization as cement-additive, adsorbents and in 36 zeolite production [2]. An examination of research publications on 37 the leaching of fly ash [3][4][5][6][7][8][9] revealed that only few studies reported 38 the acid digestion protocols used.…”

Review of harmless treatment of municipal solid waste incineration fly ash

“…New alkali-resistant strains are also under investigation. In Ramanathan et al's work [191], Alkalibacterium sp. TRTYP6 is cultured to bio-leach heavy metals from fly ash.…”