Loading...
Please wait, while we are loading the content...
Similar Documents
Advances in Methods for Recovery of Ferrous, Alumina, and Silica Nanoparticles from Fly Ash Waste
| Content Provider | MDPI |
|---|---|
| Author | Yadav, Virendra Kumar Fulekar, Madhusudan Hiraman |
| Copyright Year | 2020 |
| Description | Fly ash or coal fly ash causes major global pollution in the form of solid waste and is classified as a “hazardous waste”, which is a by-product of thermal power plants produced during electricity production. Si, Al, Fe Ca, and Mg alone form more than 85% of the chemical compounds and glasses of most fly ashes. Fly ash has a chemical composition of 70–90%, as well as glasses of ferrous, alumina, silica, and CaO. Therefore, fly ash could act as a reliable and alternative source for ferrous, alumina, and silica. The ferrous fractions can be recovered by a simple magnetic separation method, while alumina and silica can be extracted by chemical or biological approaches. Alumina extraction is possible using both alkali- and acid-based methods, while silica is extracted by strong alkali, such as NaOH. Chemical extraction has a higher yield than the biological approaches, but the bio-based approaches are more environmentally friendly. Fly ash can also be used for the synthesis of zeolites by NaOH treatment of variable types, as fly ash is rich in alumino-silicates. The present review work deals with the recent advances in the field of the recovery and synthesis of ferrous, alumina, and silica micro and nanoparticles from fly ash. |
| Ending Page | 420 |
| Page Count | 37 |
| Starting Page | 384 |
| e-ISSN | 25716131 |
| DOI | 10.3390/ceramics3030034 |
| Journal | Ceramics |
| Issue Number | 3 |
| Volume Number | 3 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-09-22 |
| Access Restriction | Open |
| Subject Keyword | Ceramics Water Science and Technology Fly Ash Ferro-alumino-silicate (fas) Alumina Silica Zeolites Ferrous |
| Content Type | Text |
| Resource Type | Article |
