Low-toxic zeolite fabricated from municipal solid waste incineration fly ash via microwave-assisted hydrothermal process with fusion pretreatment

Chen, Qian; Liu, Long; Liu, Xiaobo; Jiang, Xuguang; Chi, Yong; Yan, Jun; Zhao, Xiaoli; Kong, Litan

doi:10.1007/s10163-020-01020-7

Cited by 15 publications

(3 citation statements)

References 46 publications

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“…2018). When fly ash enters the air and inhaled by humans, it poses as a health risk due to its harmfulness (Chen, Q., et al 2020). The traditional landfill option takes up a lot of land hence resulting in river blockage (Hailu, S.L., et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Study on synthetic properties of fly ash shotcrete material in underground coal mines

Ren,

Liu,

et al. 2024

Preprint

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A new shotcrete material with high compressive strength, low water absorption rate and controlled coagulation time was developed. The changes of coagulation time, compressive strength and water absorption rate of shotcrete material with different additions of fly ash were studied according to the traditional proportion of shotcrete materials. The improving effects of the synthetic properties of fly ash shotcrete materials with different maintenance periods were studied by normal temperature activation of the new shotcrete materials through the compounding of alkali activator Na2SO4 and polycarboxylic acid water reducing agent. The results show that it is feasible to use the activated fly ash to make shotcrete material for roadway. The combination of AA-Na2SO4 and PAWRa can improve the comprehensive properties of fly ash shotcrete. When 1.5% and 0.5% of AA-Na2SO4 and PAWRa were added respectively, the comprehensive properties of the shotcrete material were the best.

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Section: Introductionmentioning

confidence: 99%

Study on synthetic properties of fly ash shotcrete material in underground coal mines

Ren,

Liu,

et al. 2024

Preprint

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“…The possibility of using fly ashes has recently met with increased interest among researchers. Fly ash, which due to its mineral composition could easily be transformed into synthetic zeolites, can be successfully used in heavy metal sorption (Sprynskyy et al, 2006;Koshy, 2016;Bai, 2019;Kobayashi, 2020;Chen, 2020). It fulfils the objectives of sustainable waste management because problematic waste becomes a product that can be used in wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Use of synthetic zeolite materials from fly ash to remove copper(II) ions from aqueous solutions

Ulatowska¹,

Stala²,

Nowakowska³

et al. 2020

Physicochem. Probl. Miner. Process.

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Water quality and waste management are two chief problems that the modern world is struggling with. Intensified development of the industry not only leads to the production of large amounts of solid waste that must be stored in landfills but can also result in contaminant emissions into the environment. Enormous quantities of ash produced from coal combustion have been a long-term problem of the industry. Literature studies show that fly ash can be used as a material to produce cheap and efficient zeolite-type adsorbents due to abundance of alumina-silicates in their composition. Fly ashes which were processed into zeolites as a result of alkaline hydrothermal treatment were obtained from two power plants in Poland (in Turów and Zgierz). The obtained zeolite materials and raw fly ash samples were characterised in terms of specific surface area, particle size distribution and density. The structure was also investigated using Fourier transform infrared spectroscopy (FTIR) in the midinfrared wavenumber range. Two raw fly ashes and two zeolite materials were examined for their ability to remove Cu(II) ions from aqueous solutions. The results showed that the amount of adsorbed copper ions by alkaline-modified fly ash was higher than for unmodified fly ash. The ion removal efficiency is high and exceeds 95%.

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“…The microwave-assisted methods use mild reaction conditions, have a high energy efficiency, and the crystallization rate is significantly accelerated [81][82][83].…”

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confidence: 99%

Municipal Solid Waste Fly Ash-Derived Zeolites as Adsorbents for the Recovery of Nutrients and Heavy Metals—A Review

Vogelsang,

Umar

2023

Water

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Though fly ash from the incineration of municipal solid waste (MSW-FA) is considered hazardous waste, its huge and increasing volumes and potential value due to high concentrations of salts and heavy metals such as copper and zinc have attracted commercial interest in mining it for resources. The associated treatments used for extracting these resources may make it economically feasible to extract other constituents from the residuals, adding another potential pathway towards a zero-waste society. This review assesses the feasibility of using zeolites, synthesized from precursors extracted from MSW-FA, as sorbents for the recovery of nutrients (ammonium, nitrate, and phosphate) and heavy metals. It is possible to tailor the properties of the zeolites; however, the large variability in reported adsorption capacities and specificities, as well as the inherent heterogenic nature and variable composition and concentrations of most nutrient- or heavy metal-rich waste streams, make such tailoring challenging. A remaining important issue is the transfer of unwanted micropollutants from the MSW-FA or waste stream to the final products and the loss of surfactants from surfactant-modified zeolites during adsorption and/or desorption of nitrate and/or phosphate. Nonetheless, the recovery process is benefited by high concentrations of the target compounds and low concentrations of competing ions.

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Low-toxic zeolite fabricated from municipal solid waste incineration fly ash via microwave-assisted hydrothermal process with fusion pretreatment

Cited by 15 publications

References 46 publications

Study on synthetic properties of fly ash shotcrete material in underground coal mines

Study on synthetic properties of fly ash shotcrete material in underground coal mines

Use of synthetic zeolite materials from fly ash to remove copper(II) ions from aqueous solutions

Municipal Solid Waste Fly Ash-Derived Zeolites as Adsorbents for the Recovery of Nutrients and Heavy Metals—A Review

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