RT journal article
T1 A Review of the Commercial Uses of Sulphate Minerals from the Titanium Dioxide Pigment Industry: The Case of Huelva (Spain)
A1 Gázquez González, Manuel Jesús
A1 Contreras, Manuel
A1 Pérez-Moreno, Silvia María
A1 Guerrero, José Luis
A1 Casas Ruiz, Melquiades
A1 Bolívar, Juan Pedro
A2 Física Aplicada
K1 TiO2 industry
K1 ferrous sulphate heptahydrate
K1 ferrous sulphate monohydrate
K1 red gypsum
K1 uses of sulphate minerals
K1 NORM industries
AB This study was focused on the historical evolution of the waste management policy carriedout by the Spanish industry devoted to titanium dioxide pigments manufacturing for minimisingits environmental impact. This challenge was achieved by modifying the original chemical processand converting the originally dissolved sulphate and sulphuric acid present in the final streams ofthe factory into sulphate minerals (melanterite FeSO4 7H2O, szomolnokite FeSO4 H2O, and gypsumCaSO4 2H2O). These by-products were physicochemically, mineralogically and radiologicallycharacterised in order to gain basic information for its subsequent commercial use. Some of the usessummarised in this study for both ferrous sulphates are as a supplier of iron to prevent chlorosis,animal food, manufacture of cement (to reduce Cr VI), primary flocculants for ferrous sulphates,magnetite nanoparticle and nano-Fe2O3 formation, production of magnetite concentrate, remediationof polluted soils with metals, and treatment of wastewaters. Red gypsum was analysed as a substitutefor natural gypsum in the manufacture of cement, construction materials, inhibitor in soil erosion,and the immobilisation of heavy metals in agricultural soils and carbonation processes.
PB MDPI
SN 2075-163X
YR 2021
FD 2021-06
LK http://hdl.handle.net/10498/25520
UL http://hdl.handle.net/10498/25520
LA eng
NO This research was partially supported by the Spanish Government Department of Science and Technology (MINECO) through the project "Fluxes of Radionuclides Emitted by the Phosphogypsum Piles Located at Huelva; Assessment of the Dispersion, Radiological Risks and Remediation Proposals" (Ref. CTM, 2015-68628-R)), the Regional Government of Andalusia project called "Basic processes regulating the fractionations and enrichments of natural radionuclides under acid mine drainage conditions" (Ref.: UHU-1255876), and the University of Cadiz project called "New methodogy of radioisotope isolation with environmental interest for its measurement by alpha spectrometry" (Ref: PR2019-024).Document
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026