Assessment on Tungsten Mining Residues Potential As Partial Cement Replacement


Electroremediation and deep eutectic solvents are well-documented clean-up processes for metals extraction from solid matrices. Depending on the purpose, these treatments may generate a residue free of pollutants and critical raw materials. Several studies were conducted to re-insert treated secondary resources in building materials. However, there is a research gap in the improvement of reactive properties of these secondary resources. In addition, there is a lack of pozzolans that can optimize cementitious materials. This study investigates the pozzolanic reactivity of tungsten mining residues after receiving electrodialytic treatment in the presence of natural deep eutectic solvents. In all cases, thermal treatment after electroremediation potentiated the pozzolanic reactivity of tungsten mining residues, between 64% to 87%. The introduction of these pozzolanic resources in cementitious-based materials may increase their performance, enlarge the range of applications in the construction industry, reduce the environmental impact, and contribute to a circular economy.

Keywords: electro-based technology, tungsten mining waste, construction material, pozzolanicity.

[1] Sandanayake, M., Zhang, G. and Setunge. S. (2019). Estimation of environmental emissions and impacts of building construction – A decision making tool for contractors. J. Build. Eng., vol. 21, pp. 173–185.

[2] European Commission, (2015). E. Communication from the commission to the European parliament, the council, the European economic and social committee and the committee and the committee of the regions, Closing the loop - An EU action plan for the Circular Economy. Brussels. https://eur-lex.

[3] Candeias, C., et al. (2014). Heavy metal pollution in mine-soil-plant system in S. Francisco de Assis - Panasqueira mine (Portugal). Appl. Geochemistry, vol. 44, pp. 12–26.

[4] De Rossi, A., et al. (2018). Waste-based geopolymeric mortars with very high moisture buffering capacity. Constr. Build. Mater., vol. 191, pp. 39–46.

[5] Kiventerä, J. et al. (2018). Alkali activation as new option for gold mine tailings inertization. J. Clean. Prod., vol. 187, pp. 76–84.

[6] Pontes, J., Santos Silva, A. and Faria. P. (2013). Evaluation of pozzolanic reactivity of artificial pozzolans. Mater. Sci. Forum, vol. 730–732, pp. 433–438.

[7] Paiva, H., et al. (2017). Microstructure and hardened state properties on pozzolan-containing concrete. Constr. Build. Mater., vol. 140, pp. 374–384.

[8] Ribeiro, A.B., Mateus, E.P. and Couto N. (Eds) (2016). Electrokinetics Across Disciplines and Continents. New Strategies for Sustainable Development. (Netherlands: Springer International Publishing).

[9] Dai, Y. et al. (2013). Natural deep eutectic solvents as new potential media for green technology. Anal. Chim. Acta, vol. 766, pp. 61–68.

[10] Magro, C., et al. (2019). Exploring hydrogen for selfenergy generation in electroremediation: a proof of concept. Appl. Energy, vol. 255.

[11] Lacasa, E., et al. (2019). Environmental applications of electrochemical technology. What is needed to enable full-scale applications? Curr. Opin. Electrochem., vol. 16, pp. 149–156.

[12] Ferraz, E., et al. (2015). Pozzolanic activity of metakaolins by the French standard of the modified Chapelle test: A direct methodology. Acta Geodyn. Geomater, vol. 12, pp. 289–298.

[13] Almeida, J. et al. (2010). Electrodialytic removal of tungsten and arsenic from secondary mine resources— Deep eutectic solvents enhancement. Sci. Total Environ., vol. 710.

[14] AFNOR, (2010). NF P 18-513 – Métakaolin, addition pouzzolanique pour bétons - Définitions, spécifications, critères de conformité. Paris. Association Française de Normalisation.

[15] Matias, G., Faria, P. and Torres, I. (2014). Lime mortars with heat treated clays and ceramic waste: A review. Constr. Build. Mater., vol. 73, pp. 125–136.

[16] Mishchik. K. (2012). Ultrafast laser-induced modification of optical glasses: a spectroscopy insight into the microscopic mechanisms. Other [cond-mat.other]. Université Jean Monnet - Saint-Etienne. English. NNT : 2012STET4012 . tel-00966418

[17] Fuji, L., et al. (1994). Behavior of Ca(OH)2/CaO pellet under dehydration and hydration. Sol. Energy., vol. 53, pp. 329–341.

[18] Lin, S., et al. (2011). Energy analysis of CaCO3 calcination with CO2 capture. Energy Procedia, vol. 4, pp. 356–361.