Preparation of non-sintered lightweight aggregates through co-mechanochemical treatment of oil-contaminated drill cuttings, circulation fluidized bed combustion fly ash, and quicklime

Chen, Xiaoyue; Xu, Zhonghui; Yao, Zhengzhen; Qin, Shuai; Jiang, Zao; Peng, Xi; Liu, Yu; An, Ran; Xin, Jiang; Li, Han

doi:10.1007/s11356-020-08522-9

Cited by 10 publications

(10 citation statements)

References 40 publications

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“…The group of signals at 779.1 cm −1 and 775.2 cm −1 indicated the existence of Si-O-X bonds where X stands for silicates or aluminates [ 10 ]. More specifically, the signal at 694.3 cm −1 corresponded to the Al-OH bending vibration [ 32 ]. The overlapping of signals in the range of 1200–900 cm −1 and the presence of a large absorption band indicated aluminosilicate structures with an asymmetric stretching vibration of the Si-O-Si and Si-O-Al bonds in [SiO 4 ] 4− and [AlO 4 ] 5− [ 7 , 32 ].…”

Section: Resultsmentioning

confidence: 99%

“…More specifically, the signal at 694.3 cm −1 corresponded to the Al-OH bending vibration [ 32 ]. The overlapping of signals in the range of 1200–900 cm −1 and the presence of a large absorption band indicated aluminosilicate structures with an asymmetric stretching vibration of the Si-O-Si and Si-O-Al bonds in [SiO 4 ] 4− and [AlO 4 ] 5− [ 7 , 32 ]. The large absorption band at 1427.1 cm −1 indicated the presence of C-O bonds [ 26 , 33 ], and the asymmetric stretching of CO 3 2− was associated with carbonates.…”

Section: Resultsmentioning

confidence: 99%

“…The large absorption band at 1427.1 cm −1 indicated the presence of C-O bonds [ 26 , 33 ], and the asymmetric stretching of CO 3 2− was associated with carbonates. In addition, the signal at 876.2 cm −1 was also an out-of-plane bending vibration, characteristic to the carbonates [ 32 ]. Together, these results indicated the presence of aluminosilicate phases in the raw MTs, corroborated by the previous XRD results.…”

Section: Resultsmentioning

confidence: 99%

“…The FAc spectra show a vibration at 798.4 cm −1 , associated with the Si-O-Si inter tetrahedral bridging bonds in quartz [ 32 ], and the signals at 1214.9 cm −1 and 1043.3 cm −1 correspond to asymmetric stretching vibration of the Si-O-Si and Si-O-Al bonds in [SiO 4 ] 4− and [AlO 4 ] 5− observed in aluminosilicate minerals [ 32 , 33 ], as previously mentioned.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, Figure 6 shows the FTIR spectra in the region of 3050–550 cm −1 from the co-geopolymerized samples (i.e., samples made with both raw MTs and FAc). The band at about 1436.5 cm −1 was attributed to the stretching vibrations of the C-O bond of the carbonates (sodium carbonate and calcium carbonate) that appear in all the spectra [ 12 , 19 , 32 , 33 ]. A small protrusion at 879.3 cm −1 , which is an out of plane bending of the carbonate group, was also identified [ 4 , 34 ].…”

Section: Resultsmentioning

confidence: 99%

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Effect of the Class C Fly Ash on Low-Reactive Gold Mine Tailing Geopolymers

et al. 2022

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Beneficiation of industrial wastes, such as mine tailings (MTs), through development of alternative eco-friendly geopolymer binders for construction composites offers a twofold environmental benefit, as it reduces the demand for cement and it increases the sustainability of industrial processes by creating a value-added product from an industrial byproduct. While MTs have the requisite composition for use as a geopolymer precursor, they are often low-reactive. This study explored the effect of Class C Fly Ash (FAc) on the geopolymerization of low-reactive gold MTs. A 10 M sodium hydroxide (NaOH) solution was used as the alkaline activator with four different concentrations of FAc (5, 10, 15 and 20 wt.%). The results indicated that the combination of FAc with the low-reactive gold MTs improved the physicochemical stability of the final geopolymerized samples, with a 95–120% increase in compressive strength, compared to the geopolymer samples of only low-reactive gold MTs. Although some of the strength improvement could be attributed to geopolymerization of the FAc itself, the presence of the FAc also improved the reactivity of the MTs, increasing the geopolymer production of the MTs. This study documents the positive effects of the FAc on gold MTs with low-calcium content and their conversion into sustainable inorganic composite geopolymers for the construction field.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Effect of the Class C Fly Ash on Low-Reactive Gold Mine Tailing Geopolymers

et al. 2022

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Valorization of oil‐based drilling cuttings as a substitute for bauxite in fracturing proppants application

Li,

Xiong,

Yang

et al. 2024

Energy Science & Engineering

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This study aimed to increase the scale of oil‐based drilling cuttings (OBDCs) resource utilization in the ceramic industry. The sintering process and mechanism were explored based on the analysis of physicochemical properties, phase transitions, and microstructure. The results showed that (1) The main ceramic‐technological characteristics of the OBDC were determined, which belonged to high‐silica solid waste with a high Si–Al ratio and a low acid–base ratio of oxides. (2) The low meltability temperature of the OBDC could largely influence the determination of the sintering temperature range for ceramic products. (3) The chemical components OBDC provided were involved in the formation of molten phases, which could affect dimensional accuracy and mechanical properties. Meanwhile, the dolomite promoted the formation of closed pores and enhanced lightweight performance. (4) Before 800°C, dolomite decomposed and reacted with SiO2 to form silicate, and then a new feldspar crystal appeared. After 1000°C, orthoclase completely melted into the molten phase, only two phases of quartz and diopside existed in the material until 1150°C. When the temperature was higher than 1350°C, the glass transition of the phase was basically intensified. (5) In the analyzed scenarios, the results indicated OBDC can only be doped in low contents and degrades the ceramic material properties.

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Review of alternative ash aggregates in concrete-solution towards waste management and environmental protection

Thiyagarajan

Ramaswamy²

2022

Environ Sci Pollut Res

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Preparation of non-sintered lightweight aggregates through co-mechanochemical treatment of oil-contaminated drill cuttings, circulation fluidized bed combustion fly ash, and quicklime

Cited by 10 publications

References 40 publications

Effect of the Class C Fly Ash on Low-Reactive Gold Mine Tailing Geopolymers

Effect of the Class C Fly Ash on Low-Reactive Gold Mine Tailing Geopolymers

Valorization of oil‐based drilling cuttings as a substitute for bauxite in fracturing proppants application

Review of alternative ash aggregates in concrete-solution towards waste management and environmental protection

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