Mechanical properties evolution and microscopic mechanisms of arsenic and cadmium co-contaminated clayey soils

Chen, Feng; Li, Jiangshan; Liu, Jindu; Chen, Zhe; Jiang, Wenhao; Huang, Xiao; Xue, Qi‐Kun

doi:10.1007/s10064-023-03238-9

Cited by 4 publications

(3 citation statements)

References 51 publications

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“…In research related to bentonites, especially in the field of environmental protection, a significant challenge is posed by their exposure to potentially toxic metal ions [7]. These ions can significantly alter the physicochemical and microstructural properties of bentonite, a fact confirmed by previous studies [8][9][10][11]. It is worth noting that copper ions, as an example of such metals, influence the unfrozen water content in clayey soils [12,13].…”

Section: Introductionmentioning

confidence: 80%

Assessment of Unfrozen Water Content in Copper Bentonites Using the 1H NMR Technique: Optimization, the Method’s Limitation, and Comparative Analysis with DSC

Nartowska,

Kanuchova,

Kozáková

2023

Materials

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Studies on changes in unfrozen water content in copper bentonite from Slovakia were conducted using both differential scanning calorimetry (DSC) and nuclear magnetic resonance (NMR) methods. The aims of this study were to 1. optimize the method for determining changes in unfrozen water content using the 1H NMR technique in model bentonites based on the DSC results; 2. analyze the relationship between unfrozen water content, as determined via DSC and the optimized NMR technique, and the physicochemical parameters of bentonites; and 3. identify the limitations in determining changes in unfrozen water content using the 1H NMR technique in relation to copper-contaminated bentonites. The results obtained using the optimized NMR method applied to the model bentonites correlated well with the DSC results. The unfrozen water content in the Cu-contaminated bentonites was 2–18% lower after NMR compared to the DSC results, likely due to the mobility of copper ions and their paramagnetic properties. Statistically significant differences in unfrozen water content between the DSC and NMR methods were observed, depending on molar concentration, copper ion concentration, and temperature, confirmed via Analysis of Variance (ANOVA). Calorimetric studies are recommended for investigating unfrozen water content changes in contaminated clays. Further NMR research could identify metals influencing free induction decay signals under varying physicochemical conditions.

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Section: Introductionmentioning

confidence: 80%

Assessment of Unfrozen Water Content in Copper Bentonites Using the 1H NMR Technique: Optimization, the Method’s Limitation, and Comparative Analysis with DSC

Nartowska,

Kanuchova,

Kozáková

2023

Materials

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“…For instance, arsenic poisoning can lead to various cancers, including skin and lung cancers [3], while cadmium toxicity can induce pathological changes in multiple organs, including the kidneys, bones, and lungs [9]. The literature indicates that As and Cd are considered resistant to degradation under natural conditions [10]. They persist in the environment, undergoing migration and transformation, and may potentially exacerbate pollution [10].…”

Section: Introductionmentioning

confidence: 99%

“…The literature indicates that As and Cd are considered resistant to degradation under natural conditions [10]. They persist in the environment, undergoing migration and transformation, and may potentially exacerbate pollution [10]. Therefore, the remediation of soil co-contaminated with As and Cd is urgently needed.…”

Section: Introductionmentioning

confidence: 99%

Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Lin,

Ma,

Liu

et al. 2024

Sustainability

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The concurrent presence of arsenic (As) and cadmium (Cd) contamination in soil is widespread and severe, highlighting the need for remediation. However, remediating As and Cd co-contaminated soils is more complex than remediating soils contaminated with a single heavy metal due to the opposite properties of As and Cd in soil. Thus, the different forms of As and Cd in co-contaminated soils and their transformation rules have been systematically reviewed in this paper. Simultaneously, hyperaccumulators and immobilization amendments used in the remediation of As–Cd co-contaminated soil were reviewed. Moreover, the mechanisms of phytoremediation and chemical immobilization techniques in the treatment of As and Cd co-contaminated soil and the remediation effects were expounded in detail. To promote the development of ecological civilization, this paper proposes further remediation strategies and guidance for the remediation of As–Cd co-contaminated soil.

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Synergistic remediation strategies for soil contaminated with compound heavy metals and organic pollutants

Nie,

Wang,

Han

et al. 2024

Journal of Environmental Chemical Engineering

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Mechanical properties evolution and microscopic mechanisms of arsenic and cadmium co-contaminated clayey soils

Cited by 4 publications

References 51 publications

Assessment of Unfrozen Water Content in Copper Bentonites Using the 1H NMR Technique: Optimization, the Method’s Limitation, and Comparative Analysis with DSC

Assessment of Unfrozen Water Content in Copper Bentonites Using the 1H NMR Technique: Optimization, the Method’s Limitation, and Comparative Analysis with DSC

Remediation of Arsenic and Cadmium Co-Contaminated Soil: A Review

Synergistic remediation strategies for soil contaminated with compound heavy metals and organic pollutants

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