Sustainability of construction materials: Electrodialytic technology as a tool for mortars production

C. Magro, J.M. Paz-Garcia, L.M. Ottosen, E.P. Mateus, A.B. Ribeiro*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The reduction of tap water consumption in all activity sectors, including the building industry, is crucial to the sustainability of water resources. Effluents from wastewater treatment plants have the potential to replace freshwater in the construction sector but they contain a critical mixture of impurities, which hampers their use in mortars production. In this work, the viability of using effluent as an alternative to potable water for the production of mortars, after electrodialytic treatment, was assessed. Electrodialytic technology (ED-T) is a proven technique for decontamination of porous and aqueous matrices. ED-T experiments were conducted with 500 mL of effluent for 6, 12 and 24 h, with a current intensity of 25 mA. The results showed that after ED-T 6 h, the removal efficiencies of critical components were above 85% of their initial concentrations. Mortar properties such as setting time, workability, flexural strength, compressive strength and morphology were obtained for 100% effluent and tap water/effluent mixtures (50:50) with and without ED-T pre-treatment. The mortars with the ED-T treated effluent showed similar initial setting times and workability, higher flexural and compressive strength compared to the mortars reference.
Original languageEnglish
JournalJournal of Hazardous Materials
Volume363
Pages (from-to)421-427
ISSN0304-3894
DOIs
Publication statusPublished - 2019

Keywords

  • Circular economy
  • Electrodialytic technology
  • Mortars production
  • Secondary water resources

Cite this

Magro, C. ; Paz-Garcia, J.M. ; Ottosen, L.M. ; Mateus, E.P. ; Ribeiro, A.B. / Sustainability of construction materials: Electrodialytic technology as a tool for mortars production. In: Journal of Hazardous Materials. 2019 ; Vol. 363. pp. 421-427.
@article{b6dbde708c9a475386b5cb4b793c63d2,
title = "Sustainability of construction materials: Electrodialytic technology as a tool for mortars production",
abstract = "The reduction of tap water consumption in all activity sectors, including the building industry, is crucial to the sustainability of water resources. Effluents from wastewater treatment plants have the potential to replace freshwater in the construction sector but they contain a critical mixture of impurities, which hampers their use in mortars production. In this work, the viability of using effluent as an alternative to potable water for the production of mortars, after electrodialytic treatment, was assessed. Electrodialytic technology (ED-T) is a proven technique for decontamination of porous and aqueous matrices. ED-T experiments were conducted with 500 mL of effluent for 6, 12 and 24 h, with a current intensity of 25 mA. The results showed that after ED-T 6 h, the removal efficiencies of critical components were above 85{\%} of their initial concentrations. Mortar properties such as setting time, workability, flexural strength, compressive strength and morphology were obtained for 100{\%} effluent and tap water/effluent mixtures (50:50) with and without ED-T pre-treatment. The mortars with the ED-T treated effluent showed similar initial setting times and workability, higher flexural and compressive strength compared to the mortars reference.",
keywords = "Circular economy, Electrodialytic technology, Mortars production, Secondary water resources",
author = "C. Magro and J.M. Paz-Garcia and L.M. Ottosen and E.P. Mateus and A.B. Ribeiro",
year = "2019",
doi = "10.1016/j.jhazmat.2018.10.010",
language = "English",
volume = "363",
pages = "421--427",
journal = "Journal of Hazardous Materials",
issn = "0304-3894",
publisher = "Elsevier",

}

Sustainability of construction materials: Electrodialytic technology as a tool for mortars production. / Magro, C.; Paz-Garcia, J.M.; Ottosen, L.M.; Mateus, E.P.; Ribeiro, A.B.

In: Journal of Hazardous Materials, Vol. 363, 2019, p. 421-427.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Sustainability of construction materials: Electrodialytic technology as a tool for mortars production

AU - Magro, C.

AU - Paz-Garcia, J.M.

AU - Ottosen, L.M.

AU - Mateus, E.P.

AU - Ribeiro, A.B.

PY - 2019

Y1 - 2019

N2 - The reduction of tap water consumption in all activity sectors, including the building industry, is crucial to the sustainability of water resources. Effluents from wastewater treatment plants have the potential to replace freshwater in the construction sector but they contain a critical mixture of impurities, which hampers their use in mortars production. In this work, the viability of using effluent as an alternative to potable water for the production of mortars, after electrodialytic treatment, was assessed. Electrodialytic technology (ED-T) is a proven technique for decontamination of porous and aqueous matrices. ED-T experiments were conducted with 500 mL of effluent for 6, 12 and 24 h, with a current intensity of 25 mA. The results showed that after ED-T 6 h, the removal efficiencies of critical components were above 85% of their initial concentrations. Mortar properties such as setting time, workability, flexural strength, compressive strength and morphology were obtained for 100% effluent and tap water/effluent mixtures (50:50) with and without ED-T pre-treatment. The mortars with the ED-T treated effluent showed similar initial setting times and workability, higher flexural and compressive strength compared to the mortars reference.

AB - The reduction of tap water consumption in all activity sectors, including the building industry, is crucial to the sustainability of water resources. Effluents from wastewater treatment plants have the potential to replace freshwater in the construction sector but they contain a critical mixture of impurities, which hampers their use in mortars production. In this work, the viability of using effluent as an alternative to potable water for the production of mortars, after electrodialytic treatment, was assessed. Electrodialytic technology (ED-T) is a proven technique for decontamination of porous and aqueous matrices. ED-T experiments were conducted with 500 mL of effluent for 6, 12 and 24 h, with a current intensity of 25 mA. The results showed that after ED-T 6 h, the removal efficiencies of critical components were above 85% of their initial concentrations. Mortar properties such as setting time, workability, flexural strength, compressive strength and morphology were obtained for 100% effluent and tap water/effluent mixtures (50:50) with and without ED-T pre-treatment. The mortars with the ED-T treated effluent showed similar initial setting times and workability, higher flexural and compressive strength compared to the mortars reference.

KW - Circular economy

KW - Electrodialytic technology

KW - Mortars production

KW - Secondary water resources

U2 - 10.1016/j.jhazmat.2018.10.010

DO - 10.1016/j.jhazmat.2018.10.010

M3 - Journal article

C2 - 30336414

VL - 363

SP - 421

EP - 427

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

ER -