Preparation of municipal solid waste incineration fly ash-based ceramsite and its mechanisms of heavy metal immobilization

Shao, Yingying; Shao, Yanqiu; Zhang, Weiyi; Zhu, Ying; Dou, Ting; Chu, Leizhe; Liu, Zhendong

doi:10.1016/j.wasman.2022.02.021

Cited by 75 publications

(10 citation statements)

References 36 publications

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“…In recent years, there has been extensive investigation into the application of ceramics derived from aluminosilicate solid waste 4–11 . Researchers have focused on enhancing material performance by precisely controlling its structure 12 .…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, there has been extensive investigation into the application of ceramics derived from aluminosilicate solid waste. [4][5][6][7][8][9][10][11] Researchers have focused on enhancing material performance by precisely controlling its structure. 12 A novel three-dimensional printable material using copper (Cu) and iron (Fe) tailings was developed, featuring a robust three-dimensional structure reinforced by ettringite and cemented crystals, resulting in increased matrix strength.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and prospect of thermodynamic behavior of aluminosilicate solid waste during ceramization

Jiang,

Chen,

Liu

et al. 2024

Int J Applied Ceramic Tech

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Aluminosilicate solid waste, primarily comprising red mud, coal gangue, fly ash, and tailings, is characterized by high annual production, low comprehensive utilization rate, and significant environmental damage. Currently, there is an urgent need for effective methods to manage and valorize aluminosilicate solid wastes. Thermodynamic investigations enable the assessment of phase transition behaviors, process conditions (such as temperature and pressure), and the direction and feasibility of reactions. Moreover, thermodynamics can predict the composition of resulting products and reveal the reaction mechanisms. All the aforementioned issues are instrumental in refining solid waste treatment processes and achieving efficient use of resources. Therefore, to promote the application of aluminosilicate solid waste, this paper describes the predictive and guiding functions of thermodynamics in the utilization of solid waste, focusing on three aspects: composition design, ceramization, and process optimization. Additionally, current challenges and future trends are discussed herein.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis and prospect of thermodynamic behavior of aluminosilicate solid waste during ceramization

Jiang,

Chen,

Liu

et al. 2024

Int J Applied Ceramic Tech

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“…The concentration of sintered products through leaching was in accordance with Chinese hazardous waste identification standards. Shao et al [14] have prepared ceramsite using fly ash, sludge, contaminated soil and clay reporting an optimal ratio to be 30%: 40%: 15%: 15%. Their optimal preparation conditions refer to preheating temperature of 400°C, for a duration of 10 min, followed by sintering at a temperature of 1150°C, for a duration of 20 min.…”

Section: Introductionmentioning

confidence: 99%

Preparation of porous ceramsite from municipal sludge and its structure characteristics

Meng,

Cui,

Srinivasakannan

et al. 2023

Advances in Applied Ceramics: Structural, Functional and Biocer

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In this paper, the municipal sludge was used as the main raw material to prepare a kind of porous ceramsite. The porous ceramsite composition of 50 wt-% of municipal sludge, 10 wt-% of municipal solid waste incineration bottom ash, 45 wt-% of waste glass powders, sintering temperature of 900°C and holding duration of 30 min. The best of the ceramsite synthesised had 1-h water absorption capacity of 51.53%, apparent porosity of 64.14% and pore volume 0.671 mL g −1 . During the sintering process, the waste glass powders generated a large amount of liquid phase, wrapt the gas produced by organic matter, and formed a porous structure inside the ceramic particles. At the same time, the silica and aluminium were combined to form Kyanite, which constitutes the basic skeleton of the ceramic particles showing a certain strength. Besides, silicon oxide and calcium silicate generated Wollastonite improving the corrosion resistance of ceramic particles as well. The adsorption capacity of the prepared porous ceramsite modified by acid combined with sodium citrate was 3.1 mg g −1 using the prepared porous ceramsite as substrate. The adsorption kinetics of ammonia nitrogen by porous ceramics conforms to the quasi-second-order kinetic model, and the adsorption isotherm model conforms to the Langmuir model. The findings lay a theoretical foundation for the integration of resource utilisation of solid waste and later application.

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“…The sintering behavior of spinel corundum ceramics is preliminarily analyzed. In addition, the liquid phase process is modified by adding pyrolusite in the ceramic system to obtain high strength ceramics (Shao et al 2022 ; Fan et al 2021 ). In summary, the above studies added binders (such as Portland cement, fly ash, and lime) to WDC to effectively fix pollutants through chemical fixation and physical coating.…”

Section: Introductionmentioning

confidence: 99%

Human carcinogenic risk analysis and utilization of shale gas water-based drilling cuttings in road materials

Wang

Chen

Huang³

et al. 2022

Environ Sci Pollut Res

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Water-based drilling cuttings (WDC) generated during shale gas development will endanger human health and ecological security. The modern analytical techniques are used to analyze the organic pollutants in WDC, and the human health and ecological security risks of harmful pollutants in WDC under specific scenarios are evaluated. The results showed that the content of organic pollutants in WDC was evaluated by human health and safety risk assessment. The comprehensive carcinogenic risks of all exposure pathways of single pollutant benzo(a)anthracene, benzo(a)pyrene, benzo(k)fluoranthene, and indeno(1,2,3-cd)pyrene were acceptable. However, the cumulative carcinogenic risk of exposure to dibenzo(a,h)anthracene particles via skin exposure was not acceptable. It was considered that only dibenzo(a,h)anthracene had carcinogenic effect, and the risk control limit of dibenzo(a,h)anthracene in WDC was 1.8700 mg/kg by calculation. As well as, the “WDC-cement” gel composite structure was deeply analyzed, and the physical and chemical properties and mechanism of organic pollutants in cement solidified WDC were analyzed, which provided theoretical support for the study of WDC pavement cushion formula. Based on the above conclusions and combined with the actual site, by studying and adjusting the formula of WDC pavement cushion, the WDC pavement cushion was finally designed by 6% cement + 50% WDC + 44% crushed stone. The 7d unconfined compressive strength met the requirements of the Chinese standard “ Technical Guidelines for Construction of Highway Roadbases ” (JTG/T F20-2015). Also, the process route of WDC as road cushion product was sampled and analyzed. In addition, the leaching concentration of main pollutants all met the relevant standards of China. Therefore, this study can provide a favorable way for the efficient, safe, and environmentally friendly utilization of WDC, and ensure the ecological environment safety and human health safety of WDC in resource utilization.

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Preparation of municipal solid waste incineration fly ash-based ceramsite and its mechanisms of heavy metal immobilization

Cited by 75 publications

References 36 publications

Analysis and prospect of thermodynamic behavior of aluminosilicate solid waste during ceramization

Analysis and prospect of thermodynamic behavior of aluminosilicate solid waste during ceramization

Preparation of porous ceramsite from municipal sludge and its structure characteristics

Human carcinogenic risk analysis and utilization of shale gas water-based drilling cuttings in road materials

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