Effect of natural geotextile on the cotransport of heavy metals (Cu2+, Pb2+, and Zn2+) and kaolinite particles

Abbar, Bouamama; Alem, Abdellah; Pantet, Anne; Ahfir, Nasre-Dine; Marcotte, Stéphane; Wang, Huaqing; Duchemin, B.

doi:10.1080/09593330.2019.1637463

Cited by 5 publications

(2 citation statements)

References 38 publications

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“…The CBR value of subgrade increases by about 50% [74] Natural geotextiles can also be used for medium and short term filtration or drainage, and natural fibers have the ability to remove heavy metals [78,79]. Abbar et al [80] Studied the effect of linen geotextile on soluble heavy metals using filters filled with sand and flax geotextile. The results demonstrated that flax geotextile improved the ability of the filter to retain soluble metals and attach heavy metals (Figure 12).…”

Section: Reinforcement Of Subgradementioning

confidence: 99%

Review of Application and Innovation of Geotextiles in Geotechnical Engineering

Yao

et al. 2020

Materials

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Most geotextiles consist of polymers of polyolefin, polyester or polyamide family, which involve environmental problems related to soil pollution. Geotextiles can be used for at least one of the following functions: Separation, reinforcement, filtration, drainage, stabilization, barrier, and erosion protection. Due to the characteristics of high strength, low cost, and easy to use, geotextiles are widely used in geotechnical engineering such as soft foundation reinforcement, slope protection, and drainage system. This paper reviews composition and function of geotextiles in geotechnical engineering. In addition, based on literatures including the most recent data, the discussion turns to recent development of geotextiles, with emphasis on green geotextiles, intelligent geotextiles, and high-performance geotextiles. The present situation of these new geotextiles and their application in geotechnical engineering are reviewed.

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Section: Reinforcement Of Subgradementioning

confidence: 99%

Review of Application and Innovation of Geotextiles in Geotechnical Engineering

Yao

et al. 2020

Materials

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“…Among these pollutants, the transfer mechanism and treatment measures of heavy metal contaminants (e.g., Cd 2+ , Pb 2+ , Cu 2+ , Cr 2+ , and Zn 2+ ) have become the focus issue of geoenvironmental research [6][7][8]. e interactions between soil particles and heavy metal contaminants can differ substantially [9][10][11], which depends on their deposition mechanism and the imposed external conditions [12], including the aspects such as the pH value and ionic concentration of solutions, van der Waals forces, double layer repulsive force, presence of colloidal particles [13,14], and even the temperature effect [15,16]. e transfer of contaminants has been largely investigated through experimental research, theoretical analyses, and numerical simulations [17,18].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Coupled Heat‐Moisture‐Heavy Metal Pollutant Transfer Process in Soils

Nie

Wang

Guo

et al. 2021

Advances in Civil Engineering

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The coupled physical mechanism of heat conduction, moisture migration, and heavy metal transfer in a kaolin soil was studied by one-dimensional column tests. Two cyclic temperature tests show that, during the second cycle, the temperature close to the heat source of the soil column is lower than that during the first cycle and the temperature far away from the heat source is low, which reflects the influence of heating path. Correspondingly, the moisture content distribution during the second cycle is quite different from that during the first cycle. The higher the soil dry density is, the better the heat conduction is. The lower the dry density is, the more favorable the moisture migration is. The placement direction of the soil column and the set of temperature boundaries affect the moisture distribution of the soil column through the difference in the temperature, gravity, and solid matrix potentials. The temperature-driven liquid water movement effectively promotes the transfer of heavy metal contaminant in unsaturated soils; it is closely correlated with the convection of the heavy metal substances easily dissolved in liquid water. However, the transfer of heavy metal substances in unsaturated soil is not obvious without a thermal driving force. The test results for the different heavy metal ions indicate that the thermally induced transfer distance of the heavy metal pollutants with low adsorption properties (e.g., Cu2+) to soil particles is much larger than that of the heavy metal pollutants with high adsorption properties (e.g., Cd2+).

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