Next Article in Journal
Transmission Electron Microscopy Investigations on a Polysiloxane Preceramic Polymer Pyrolyzed at High Temperature in Argon
Previous Article in Journal
Experimental Investigation of the Tension and Compression Creep Behavior of Alumina-Spinel Refractories at High Temperatures
Open AccessReview

Advances in Methods for Recovery of Ferrous, Alumina, and Silica Nanoparticles from Fly Ash Waste

1
School of Nanosciences, Central University of Gujarat, Gandhinagar, Gujarat 382030, India
2
School of Lifesciences, Jaipur National University, Jaipur, Rajasthan 302017, India
3
School of Environment & Sustainable Development, Central University of Gujarat, Gandhinagar, Gujarat 382030, India
4
Centre of Research and Development, Parul University, Vadodra, Gujarat-391760, India
*
Author to whom correspondence should be addressed.
Received: 6 April 2020 / Revised: 6 August 2020 / Accepted: 18 September 2020 / Published: 22 September 2020
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. View Full-Text
Keywords: fly ash; ferro-alumino-silicate (FAS); alumina; silica; zeolites; ferrous fly ash; ferro-alumino-silicate (FAS); alumina; silica; zeolites; ferrous
Show Figures

Figure 1

MDPI and ACS Style

Yadav, V.K.; Fulekar, M.H. Advances in Methods for Recovery of Ferrous, Alumina, and Silica Nanoparticles from Fly Ash Waste. Ceramics 2020, 3, 384-420. https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics3030034

AMA Style

Yadav VK, Fulekar MH. Advances in Methods for Recovery of Ferrous, Alumina, and Silica Nanoparticles from Fly Ash Waste. Ceramics. 2020; 3(3):384-420. https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics3030034

Chicago/Turabian Style

Yadav, Virendra K.; Fulekar, Madhusudan H. 2020. "Advances in Methods for Recovery of Ferrous, Alumina, and Silica Nanoparticles from Fly Ash Waste" Ceramics 3, no. 3: 384-420. https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics3030034

Find Other Styles

Article Access Map by Country/Region

1
Back to TopTop