Synthesis and Characterization of Slag-Sludge-Based Eco-Friendly Materials – Industrial Implications

• Autorzy: Lagrani Saadia , Aziz Ayoub , Bellil Abdelilah , Felaous Khadija , Achab Mohammed , Fekhaoui Mohamed

Identyfikatory

DOI

10.12911/22998993/156078

• Języki publikacji: EN

Abstrakty

EN

Currently in Morocco, wastewater treatment plants (WWTPs) generate huge quantities of sludge from wastewater treatment. This sludge is a real concern for the environment. No regulatory text takes into account the future and management of sludge, its use in agriculture is not officially authorized and the solutions currently implemented for its elimination or recovery are done on an ad hoc basis and pose a number of difficulties for operators. The objective of the present study is to investigate the stabilization and solidification of a geopolymer based on sewage sludge and blast furnace slag (slag), as well as the possibility to use this geopolymer as a thermal insulation material. The sludge used comes from the AIN AOUDA-activated sludge type WWTP, the collected sludge is dehydrated and stabilized by slaked lime (Ca(OH)₂) in the sludge treatment process. The blast furnace slag (slag) came from the plant in France. Four samples were prepared by substituting the slag with quantities (10 to 40%) of limed sludge, a quantity of sand, and a solution of sodium silicate and sodium hydroxide used as an alkaline activator. The effect of limed sludge on the physicochemical and microstructural properties of the synthesized geopolymers was evaluated using several analytical techniques, such as compressive strength, P-wave velocity, density and porosity tests, and X-ray diffraction. The results showed that the addition of 10 to 40% of limed sludge resulted in a progressive decrease in the compressive strength of the synthesized geopolymer and an increase in the thermal conductivity, which allows the use of the synthesized geopolymer as a material.

Słowa kluczowe

EN

geopolymer mortar; non-incinerated sewage sludge; blast furnace slag; construction material

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2023
• Tom: Vol. 24, nr 1
• Strony: 227--238
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Lagrani Saadia

• Geo-Biodiversity and Natural Patrimony Laboratory (GEOBIO), Scientific Institute, "Geophysics, Natural Patrimony and Green Chemistry" Research Center (GEOPAC), Mohammed V University in Rabat, Avenue Ibn Batouta, P.B. 703, 10106, Rabat-Agdal, Morocco

autor

Aziz Ayoub

• Geo-Biodiversity and Natural Patrimony Laboratory (GEOBIO), Scientific Institute, "Geophysics, Natural Patrimony and Green Chemistry" Research Center (GEOPAC), Mohammed V University in Rabat, Avenue Ibn Batouta, P.B. 703, 10106, Rabat-Agdal, Morocco

• https://orcid.org/0000-0001-6694-4651

autor

Bellil Abdelilah

• Geo-Biodiversity and Natural Patrimony Laboratory (GEOBIO), Scientific Institute, "Geophysics, Natural Patrimony and Green Chemistry" Research Center (GEOPAC), Mohammed V University in Rabat, Avenue Ibn Batouta, P.B. 703, 10106, Rabat-Agdal, Morocco

• https://orcid.org/0000-0002-1447-0420

autor

Felaous Khadija

• Geo-Biodiversity and Natural Patrimony Laboratory (GEOBIO), Scientific Institute, "Geophysics, Natural Patrimony and Green Chemistry" Research Center (GEOPAC), Mohammed V University in Rabat, Avenue Ibn Batouta, P.B. 703, 10106, Rabat-Agdal, Morocco

autor

Achab Mohammed

• Geo-Biodiversity and Natural Patrimony Laboratory (GEOBIO), Scientific Institute, "Geophysics, Natural Patrimony and Green Chemistry" Research Center (GEOPAC), Mohammed V University in Rabat, Avenue Ibn Batouta, P.B. 703, 10106, Rabat-Agdal, Morocco

autor

Fekhaoui Mohamed

• Geo-Biodiversity and Natural Patrimony Laboratory (GEOBIO), Scientific Institute, "Geophysics, Natural Patrimony and Green Chemistry" Research Center (GEOPAC), Mohammed V University in Rabat, Avenue Ibn Batouta, P.B. 703, 10106, Rabat-Agdal, Morocco

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).