A novel gasification exfoliation method of the preparation of anhydrous montmorillonite nanosheets for inhibiting restack problem suffering from dehydration

Chen, Licai; Zhao, Yunliang; Bai, Haoyu; Ren, Bo; Wang, Wei; Qi, Meixiang; Zhang, Tingting; Song, Shaoxian

doi:10.1016/j.clay.2021.106394

Cited by 3 publications

(2 citation statements)

References 42 publications

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“…Under the pressure of 20 MPa, the well‐mixed sample was pressed into a smooth‐surfaced cylinder with a thickness of 5 mm. [ 13 ]…”

Section: Methodsmentioning

confidence: 99%

“…Under the pressure of 20 MPa, the well-mixed sample was pressed into a smooth-surfaced cylinder with a thickness of 5 mm. [13] 2.4.2 ICP-OES 0.5 g of sample, 5 mL of HF, and 1 mL of HNO 3 were introduced to a fluorinated ethylene propylene (FEP) digestion beaker that was placed on top of a heated plate. [14] The surface of the hot plate was then heated to 110 • C to speed up the digestion of the samples until they were entirely digested.…”

Section: Xrfmentioning

confidence: 99%

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Soilless remediation of the fine carbonate‐rich gold‐copper mine tailings

Xia,

Bi,

Cui

et al. 2023

CLEAN Soil Air Water

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Soil remediation with minimum amendments is a good strategy for tailings disposal. Carbonate‐rich gold‐copper mine tailings occurring alongside the Yangzi River, China, were employed as the objective in this study. They showed the characteristics of fine particles and alkaline pH with high density and low nutrition. The amendments including bacterial fertilizer (BF), polymer, peat, straw, and compound fertilizer (CF) were used for soilless remediation on the tailings. Soil quality index (SQI) involved in tailing properties and growth characteristics of ryegrass was used to optimize the combination of amendments. The results showed that the optimum amendment combination was 0.2% BF + 0.6% CF + 0.2% polymer + 10% peat and 2% straw. Tailing nutrients such as soil organic matter (5.56%), available nitrogen (93.6 mg kg−1), available phosphorus (51.7 mg kg−1), available potassium (711 mg kg−1), and ryegrass exhibited the highest germination rate and biomass level under the optimal improvement conditions. Additional environmental assessments revealed that soilless treatment of the tailings helped to convert Cu, Zn, and As into residual forms. These findings show a good strategy for tailings soil improvement and provide a promising perspective of the soilless remediation for fine carbonate‐rich metal tailings.

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“…Under the pressure of 20 MPa, the well‐mixed sample was pressed into a smooth‐surfaced cylinder with a thickness of 5 mm. [ 13 ]…”

Section: Methodsmentioning

confidence: 99%

Section: Xrfmentioning

confidence: 99%