Effects of lead contaminants on engineering properties of Iranian marl soil from the microstructural perspective

Amiri, Mohammad; Dehghani, Masoud; Javadzadeh, Tohid; Taheri, Sepideh

doi:10.1016/j.mineng.2021.107310

Cited by 17 publications

(2 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Upon exposure to a 25 cmol/kg soil lead contaminant, the soil structure exhibited progressive tangling and limited flocculation, leading to expanded interstitial spaces. This is because, with Pb carbonate deposits coating the clays, the repulsive forces among the particles weakened, causing a reduction in the thickness of the diffused double layer [85].…”

Section: Impact Of Industrial Wastewatermentioning

confidence: 99%

Impacts of Contaminants from Different Sources on Geotechnical Properties of Soils

Zhao,

Zhang,

Zhang

et al. 2023

Sustainability

View full text Add to dashboard Cite

Within sites affected by industrial, domestic, and agricultural contaminants, the geotechnical characteristics of soils are susceptible to a certain degree of deterioration. The resultant corrosion of concrete exacerbates the vulnerability of underground structures, posing a potential hazard to the stability of superstructures. However, the current lack of comprehensive understanding regarding the precise influence of contaminants from different sources on the geotechnical properties of soils underscores the critical need for further research in this field. This review aims to elucidate the underlying mechanisms of various impacts, revealing that the permeability, shear strength, and compressibility of soils can either increase or decrease depending on the specific contaminants present. Notably, even though these impacts may not manifest prominently in the short term, their persistence can endure over an extended duration. The primary objective of this comprehensive review is to draw the attention of the scientific community and policy makers to this issue, emphasizing the need to mitigate potential hazards and safeguard a habitable environment for present and future generations.

show abstract

Section: Impact Of Industrial Wastewatermentioning

confidence: 99%

Impacts of Contaminants from Different Sources on Geotechnical Properties of Soils

Zhao,

Zhang,

Zhang

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…Beyond health implications, the enrichment of heavy metal ions in soils also affects their physical, chemical, and mechanical properties, leading to potential engineering safety concerns. The impact of heavy metal ions on the engineering properties of soil not only leads to a reduction in shear strength but also causes a significant loss in deformation characteristics [10,11]. Therefore, the remediation technology that combines the treatment of heavy metal contaminants and the improvement of the engineering properties of contaminated soil could have high importance and should be a necessary requirement.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Shear Responses of Combined Contaminated Soil Treated with Nano Zero-Valent Iron (nZVI) under Controlled Moisture

Wei,

Chen,

Dong

et al. 2023

Sustainability

View full text Add to dashboard Cite

Nano zero-valent iron (nZVI) technologies have gained recognition for the remediation of heavily contaminated sites and reused as backfilling soil. The moisture environment at these sites not only impacts the reactions and reactivity of nZVI but also the dynamic responses of compacted backfilled soils. The research explored the effects of different nZVI dosages (0.2%, 0.5%, 1%, 2%, and 5%) on Lead-Zinc-Nickel ions contaminated soil under a controlled-moisture condition. Cyclic triaxial tests were performed to evaluate the dynamic responses of treated soil samples prepared using a consistent moisture compaction method. Particle size distribution and Atterberg limits tests assessed changes in particle size and plasticity. The study revealed a minor reduction in the particle size, liquid limit, plastic limit, and plasticity index of the contaminated soil. Notably, increasing nZVI dosages in treated soils led to growing Atterberg limits. An increase in the specific sand fraction of treated soils was observed with nZVI, suggesting nanoparticles–soil aggregations favoring existing larger particles. Stepwise loading cyclic triaxial tests indicated an optimal dynamic response of soil treated with 1% nZVI under the controlled-moisture condition, proven by notable enhancements in the maximum shear modulus, maximum shear stress, less shear strain, and higher damping ratio within the small strain range. It should be noted that moisture content in treated soils declined significantly with higher nZVI dosages during preparation, potentially impeding effective aggregation and the formation of a solid soil skeleton. These findings advance the importance of considering the balanced nZVI dosage and moisture content when employing the safety assessment of practical applications in both nano-remediation techniques and soil mechanics.

show abstract

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

Chen

Liu

et al. 2023

Bull Eng Geol Environ

View full text Add to dashboard Cite

Effects of lead contaminants on engineering properties of Iranian marl soil from the microstructural perspective

Cited by 17 publications

References 40 publications

Impacts of Contaminants from Different Sources on Geotechnical Properties of Soils

Impacts of Contaminants from Different Sources on Geotechnical Properties of Soils

Dynamic Shear Responses of Combined Contaminated Soil Treated with Nano Zero-Valent Iron (nZVI) under Controlled Moisture

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

Contact Info

Product

Resources

About