Next Article in Journal / Special Issue
The Formation of Barite and Celestite through the Replacement of Gypsum
Previous Article in Journal
Pickeringite from the Stone Town Nature Reserve in Ciężkowice (the Outer Carpathians, Poland)
Previous Article in Special Issue
High Specific Activity of Radium Isotopes in Baryte from the Czech Part of the Upper Silesian Basin—An Example of Spontaneous Mine Water Treatment
Open AccessArticle

Power Generation: Feedstock for High-Value Sulfate Minerals

1
Institute for Microbiology, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland
2
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland
3
ISTerre, University Grenoble Alpes & CNRS, 38000 Grenoble, France
*
Author to whom correspondence should be addressed.
Minerals 2020, 10(2), 188; https://doi.org/10.3390/min10020188
Received: 30 November 2019 / Revised: 9 February 2020 / Accepted: 16 February 2020 / Published: 19 February 2020
(This article belongs to the Special Issue Barite)
Coal-fired power facilities generate a polymetallic effluent (Flue Gas Desulfurization—FGD) rich in sulfate. FGD effluents may be considered an important secondary resource. This paper investigates the recovery of sulfate as barite (BaSO4), a mineral with high commercial value and a critical raw material. Using equimolar BaCl2, >99% desulfurization of an FGD effluent produced by a coal-fired power plant operating in central Poland was achieved, yielding up to 16.5 kg high purity barite m−3. The recovered barite was characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric (TGA), scanning electron microscopy analysis (SEM), surface properties (PZC), density, and chemical stability (TCLP), and was compared with a commercial reference material. Barite recovery also led to the reduction in concentration of Al (86%), Cu (52%), K (69%), Mo (62%), Se (40%), Sr (91%), and U (75%) initially present in the FGD effluent. TCLP results indicate the entrapment and the stabilization of ~70% Se and ~90% Al in the barite structure. Based on this dataset, an in-depth characterization of the recovered barite is presented, and the removal mechanism of the elements is discussed. The study also provides a preliminary cost benefit analysis of the process. To our best knowledge, this is the first work showing barite recovery and metal removal from FGD effluents using a one-step process. View Full-Text
Keywords: BaSO4; critical raw material (CRM); FGD; resource recovery; circular economy BaSO4; critical raw material (CRM); FGD; resource recovery; circular economy
Show Figures

Graphical abstract

MDPI and ACS Style

Staicu, L.C.; Bajda, T.; Drewniak, L.; Charlet, L. Power Generation: Feedstock for High-Value Sulfate Minerals. Minerals 2020, 10, 188.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop