Optimization synthesis geopolymer based mixture metakaolin and fly ash activated by alkaline solution

Driouich, Anas; Chajri, Fatimazahra; Hassani, Safae El Alami El; Britel, Ouafae; Belouafa, S.; Khabbazi, Abdelhamid; Chaair, Hassan

doi:10.1016/j.jnoncrysol.2020.120197

Cited by 22 publications

(4 citation statements)

References 20 publications

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“…Two-dimensional iso-response plots and three-dimensional response surfaces were generated using STATISTICA software to assess the relative impact of two factors while keeping the others constant (Driouich et al, 2020). These representations, which are based on the regression equation and generated from the quadratic model's equations, seek to comprehend the influences 2 ; with (β 0 = 0.8180947) being a constant that is independent of any factor.…”

Section: Validation Of the Modelmentioning

confidence: 99%

Study on Wastewater Treatment in the Textile Industry by Adsorption of Reactive Red 141 Dye Using a Phosphogypsum/Vanadium Composite Developed from Phosphate Industry Waste

Chajri,

Bensemlali,

Hatimi

et al. 2024

Ecol. Eng. Environ. Technol.

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Water purification has become a global concern in recent decades because of declining water supplies and rising water pollution by industrialization and urbanization (Liang et al., 2019;Lin et al., 2022;Morin-Crini et al., 2022). Various industrial byproducts, including metals, lubricants, chemicals, dyes, and others, are examples of water pollutants (Ahmed et al., 2021;Ajiboye et al., 2021). Water contamination is mostly caused by dye leakage, which is mostly produced by the food, paper, textile, and printing sectors (Liu, 2020;Sharma et al., 2021;Singh et al., 2022).Most commercial organic dyes fall under the group of azo dyes, which is why they are especially concerning (Bafana et al., 2011;Eltaboni et al., 2022;Hashemi and Kaykhaii, 2022). About 700,000 tons of azo dyes are produced annually worldwide. 70% globally are used, for instance, by the textile sector (Garg and Tripathi, 2017;Ibitoye et al., 2022). Regretfully, a

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Section: Validation Of the Modelmentioning

confidence: 99%

Study on Wastewater Treatment in the Textile Industry by Adsorption of Reactive Red 141 Dye Using a Phosphogypsum/Vanadium Composite Developed from Phosphate Industry Waste

Chajri,

Bensemlali,

Hatimi

et al. 2024

Ecol. Eng. Environ. Technol.

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“…Right after, NaOH beads and Na 2 SiO 3 solution have been mixed and dissolved in distilled water (Figure 1). After conducting several experiments based on the existing literature [59][60][61], and considering the work by Bouguermouh et al [62], we decided to activate metakaolin with sodium silicate and hydroxide using the following molar ratios (Al Through this iterative process, we developed a customized mix design that enables us to achieve desirable outcomes, including a well-developed pore network and appropriate setting time for both geopolymer and geopolymeric mortar, as well as excellent moldings properties. A specific amount of metakaolin was added to the NaOH and Na 2 SiO 3 solution.…”

Section: Specimen Preparationmentioning

confidence: 99%

Acid Resistance of Metakaolin-Based Geopolymers and Geopolymeric Mortars Reinforced with Coconut Fibers

Lezzerini,

Aquino,

Pagnotta

2024

Fibers

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This paper investigates the durability of geopolymers and geopolymeric mortars made with metakaolin and alkaline activators, with and without a coconut fiber addition, after immersion for seven days into solutions of citric acid (1%, 2.5%, 5%, and 10%); hydrochloric acid (1%, 2.5%, 5%, and 10%); and sulfuric acid (1%, 2.5%, 5%, and 10%). The study focuses on mass changes, uniaxial compressive strength, flexural strength, and ultrasound pulse velocity measurements. X-ray diffraction and scanning electron microscopy are used to analyze the degradation products and microstructural changes. The aim is to assess the effect of acid exposure on the strength and stability of geopolymer materials and identify any protective effects of coconut fiber reinforcement. The samples are immersed in acid solutions of varying concentrations, and their mechanical properties are measured. The presence of coconut fibers slightly modifies the physical properties and the compressive strength, improving the mechanical flexural strength. Geopolymer and geopolymeric mortar materials experienced a weak decrease in strength when exposed to solutions of citric acid and a significant one when exposed to solutions of hydrochloric and sulfuric acids, attributed to depolymerization of the aluminosilicate binders. Brick waste geopolymeric mortars reinforced with coconut fibers showed the best performance in acid solutions with respect to geopolymers and quartz-rich sand geopolymeric mortars, suggesting a more stable cross-linked aluminosilicate geopolymer structure in this material.

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“…Geopolymer concrete is a cutting-edge technology that is gaining popularity in the construction industry due to its sustainable approach. Unlike traditional concrete, which is made with cement as the primary binder, geopolymer concrete utilizes industrial by-products such as fly ash, ground granulated blast furnace slag, and rice husk ash as the binding agent [11]. This not only reduces the amount of cement used in the concrete mix, but also helps to eliminate the large CO2 emissions that are associated with cement production.The use of rice husk ash in particular is of great interest as it is a major waste product generated by the rice industry.…”

Section: Sustainable Approach Of Geopolymer Concretementioning

confidence: 99%

Waste Upcycling in Construction: Geopolymer Bricks at the Vanguard of Polymer Waste Renaissance

Haq,

Sood,

Kumar

et al. 2023

E3S Web Conf.

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Geopolymer concrete is one of the new aged concrete that is widely being studied and applied due to its sustainable approach achieved by its low CO2 emission by eliminating the utilization of cement in concrete. Geopolymer is cement less concrete made out of industrial by products like fly ash, GGBS, Rice husk ask , Mine tailing waste etc. or any other waste material that constituent the Si:Al that can be dissolved and polymerise in the alkaline solution. In the present study we have utilized rice husk ash to develop the geopolymer concrete as rice husk ash is one of the major challenge of handling and large emission of CO2. The geopolymer concrete made out of Rice husk ask is tested against all the standard codal provision for the conventional concrete. Compressive strength results align with the special mix design made out for the geopolymer concrete. The Study was conducted at the ambient temperature as well at the 60°C and microscopic studies were performed to analysis the change in the internal structure using SEM images

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Optimization synthesis geopolymer based mixture metakaolin and fly ash activated by alkaline solution

Cited by 22 publications

References 20 publications

Study on Wastewater Treatment in the Textile Industry by Adsorption of Reactive Red 141 Dye Using a Phosphogypsum/Vanadium Composite Developed from Phosphate Industry Waste

Study on Wastewater Treatment in the Textile Industry by Adsorption of Reactive Red 141 Dye Using a Phosphogypsum/Vanadium Composite Developed from Phosphate Industry Waste

Acid Resistance of Metakaolin-Based Geopolymers and Geopolymeric Mortars Reinforced with Coconut Fibers

Waste Upcycling in Construction: Geopolymer Bricks at the Vanguard of Polymer Waste Renaissance

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