A high-strength red mud–fly ash geopolymer and the implications of curing temperature

Bai, Bing; Bai, Fan; Nie, Qiulin; Jia, Xiangxin

doi:10.1016/j.powtec.2023.118242

Cited by 155 publications

(20 citation statements)

References 41 publications

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“…Solid oxide fuel cells can also be used to generate electricity, and this electricity can be sold at a good price 52 . Additionally, the by‐product of farm waste can be used to improve the soil conditions 53–56 . But, careful consideratons need to be given to heavy metals found in waste 57,58 …”

Section: Resultsmentioning

confidence: 99%

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Biogas production potential from animal farm waste in Bangladesh: Case studies of two selected farms

Das

Islam

Uddin

2023

Env Prog and Sustain Energy

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Increasing prices of conventional energy sources and ongoing environmental pollution have encouraged policymakers to search for sustainable energy resources. In developing countries, livestock waste is often mismanaged and negatively impacts the environment. Bioenergy production from agricultural and animal wastes can be a viable solution. This study conducted a month‐wise survey on a multipurpose farm and a dairy farm in Chattogram, Bangladesh, to estimate the bioenergy potential from farm livestock waste. Based on the survey, mathematical modeling was applied to estimate the selected farm's theoretical bioelectricity, biogas and biofertilizer production potential. The analysis shows that the multipurpose and dairy farm have an annual biogas production potential of 209,660.2 and 1,205,035.5 m3, generating 3.77E+05 and 2.17E+06 kWhyr−1 of bioelectricity, respectively. The multipurpose farm and the dairy farm could generate 982.03 and 16092.49 tons of bio manure yearly and had an annual biofertilizer potential of 64.36 and 2090.91 tons. Both environmental and economic analyses show that both farms have good greenhouse gas mitigation potential and can earn significant revenue by selling electricity and biofertilizer in the market. The outcome can provide valuable guidelines for policymakers to invest in bioenergy production from farm animal waste.

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Section: Resultsmentioning

confidence: 99%

“…52 Additionally, the by-product of farm waste can be used to improve the soil conditions. [53][54][55][56] But, careful consideratons need to be given to heavy metals found in waste. 57,58…”

Section: Economic Analysismentioning

confidence: 99%

Biogas production potential from animal farm waste in Bangladesh: Case studies of two selected farms

Das

Islam

Uddin

2023

Env Prog and Sustain Energy

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“…In recent times, a problem arose, consisting of excessive construction and demolition waste, and the problems it causes [ 4 , 5 ]. The best way to solve this situation is to try to convert this problem into a solution.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Recycled Cement, Fly Ash, and Magnesium Oxide on the Mechanical Performance of Sustainable Cementitious Materials

et al. 2023

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In the construction industry, cement is the most widely used material. So, to achieve greater sustainability in this industry, it is imperative to improve the sustainability of this material. One way to reduce the ecological footprint of cement is to replace it, even if partially, with other more sustainable materials that can act as binders. This paper analyses the mechanical properties of more sustainable mortars containing recycled cement (RC), fly ash (FA), and magnesium oxide (MgO). Different types of binary, ternary, and quaternary mortars were used: containing recycled cement (5% and 10%), fly ash (10% and 20%), and MgO (7.5% and 15%). An experimental campaign was carried out analysing air content, density, compressive and flexural strengths, modulus of elasticity, and ultrasonic pulse velocity. The ternary mortars showed decreases between 0.4% (M-5RC10FA) and 35.3% (M-10RC15Mg) in terms of compressive strength at 365 days (compared to RM), when the theoretically expected decrease (the sum of the decreases obtained with the individual incorporation of these materials) would be between 16.6% and 41.5%, respectively. The results obtained allow for concluding that the joint use of these materials in ternary mortars improves the mechanical capacity, relative to the individual incorporation of each material in binary mortars.

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“…In addition, the toxicity of these pigments can endanger the life of aquatic animals and also pollute groundwater by accumulating in the soil. According to estimations, 10% to 15% of dyes enter the environment as effluents in the course of dyeing and polishing processes, which signifies the necessity of their removal 14–17 . There are many methods for removing paint from paint‐containing effluents including adsorption, coagulation, flocculation, membrane purification, ion exchange, and photocatalytic adsorption of chemical oxidation (chlorination, ozone use, ultrafiltration, reverse osmosis, etc.…”

Section: Introductionmentioning

confidence: 99%

“…According to estimations, 10% to 15% of dyes enter the environment as effluents in the course of dyeing and polishing processes, which signifies the necessity of their removal. [14][15][16][17] There are many methods for removing paint from paint-containing effluents including adsorption, coagulation, flocculation, membrane purification, ion exchange, and photocatalytic adsorption of chemical oxidation (chlorination, ozone use, ultrafiltration, reverse osmosis, etc. ), as well as optical degradation (UV/H 2 O 2 , UV/TiO 2 , photofenton, etc.)…”

Section: Introductionmentioning

confidence: 99%

Study of photodegradation performance of Zn‐doped CeO₂ nanoparticles for wastewater contaminants remediation under visible light

Hamidian

Sarani

Mohebbi

et al. 2023

Applied Organom Chemis

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The presented paper introduces a green route for the arrangement of pure and 1%, 2%, and 4% zinc doped cerium oxide nanoparticles (Zn-doped CeO 2 NPs) by involving the extract of Salvadora persica. The analytical results of powder X-ray diffraction (PXRD), ultraviolet-visible (UV-Vis), field emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX), and Raman techniques confirmed the successful synthesis of NPs. According to PXRD outcomes, pure CeO 2 NPs have a cubic phase. Moreover, as a result of the zinc doping within the crystal framework of this material, a noticeable alteration was observed in the placement of CeO 2 (101) peak. The size of pure CeO 2 NPs was measured by the FESEM analysis to be around 20-25 nm, which was decreased with the doping of zinc into CeO 2 structure. According to the UV-Vis outcomes, appeared peak in 343 cm À1 confirmed the formation of CeO 2 NPs; and this peak shifted by the doping of zinc. The observed Raman active band F 2g at 459 cm À1 in the graph of CeO 2 can be related to the fluorite type of CeO 2 construction. Moreover, we evaluated the photocatalytic functionality of the prepared samples towards acid orange 7 (AO7) dye at visible light. The gathered data indicated 2% Zn-doped CeO 2 as the optimum sample due to eliminating 83% of AO7 dye at the volume of 15 mg L À1 in pH = 7. Therefore, performing a doping process on these NPs was a suitable choice for improving the photocatalytic activity of CeO 2 on AO7 dye.

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A high-strength red mud–fly ash geopolymer and the implications of curing temperature

Cited by 155 publications

References 41 publications

Biogas production potential from animal farm waste in Bangladesh: Case studies of two selected farms

Biogas production potential from animal farm waste in Bangladesh: Case studies of two selected farms

The Influence of Recycled Cement, Fly Ash, and Magnesium Oxide on the Mechanical Performance of Sustainable Cementitious Materials

Study of photodegradation performance of Zn‐doped CeO₂ nanoparticles for wastewater contaminants remediation under visible light

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A high-strength red mud–fly ash geopolymer and the implications of curing temperature

Cited by 155 publications

References 41 publications

Biogas production potential from animal farm waste in Bangladesh: Case studies of two selected farms

Biogas production potential from animal farm waste in Bangladesh: Case studies of two selected farms

The Influence of Recycled Cement, Fly Ash, and Magnesium Oxide on the Mechanical Performance of Sustainable Cementitious Materials

Study of photodegradation performance of Zn‐doped CeO2 nanoparticles for wastewater contaminants remediation under visible light

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Product

Resources

About

Study of photodegradation performance of Zn‐doped CeO₂ nanoparticles for wastewater contaminants remediation under visible light