Effect of soil particle interaction forces in a clay‐rich soil on aggregate breakdown and particle aggregation

Hu, Feinan; Li, S.; Xu, Chenyang; Gao, Xiaodan; Miao, Shiding; Ding, Wuquan; Liu, X.; Li, H.

doi:10.1111/ejss.12740

Cited by 11 publications

(10 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Adsorption of MF and PA in an aqueous solution by WTC and ATC was studied. The adsorption was possibly due to Van der Waals interactions and/or electrostatic attraction between the pharmaceutical pollutant and the sorbents 54 – 56 . The impact of WTC and ATC mass on the trend of adsorption for MF and PA was investigated.…”

Section: Resultsmentioning

confidence: 99%

Linear and nonlinear investigations for the adsorption of paracetamol and metformin from water on acid-treated clay

Elamin

Abdulkhair

Algethami

et al. 2021

Sci Rep

View full text Add to dashboard Cite

Natural clays are considered a safe, low-cost, and sound sorbent for some pharmaceutical and body care products from water. Metformin (MF) and paracetamol (PA) are of the most consumable drugs worldwide. A portion of natural clay was treated with distilled water, and another part was treated with hydrochloric acid. The water-treated clay (WTC) and the acid-treated clay (ATC) were characterized by scanning electron microscopy-energy dispersive spectroscopy, X-ray diffraction, Fourier transforms infrared spectroscopy, and nitrogen adsorption isotherm. Batch experiments were employed to investigate the influence of contact time and solution parameters on the adsorption of PA and MF on WTC and ATC. 30 min attained the equilibrium for all sorbent-sorbate systems. Both sorbents fitted the pseudo-second-order kinetic model with a preference to the nonlinear fitting, and the mechanism of adsorption partially fitted the liquid-film diffusion model. The PA and MF adsorption on WTC and ATC fitted the Freundlich model in preference to nonlinear fitting. The adsorption of pollutants on both sorbents was spontaneous, exothermic, and physisorption in nature. Even at low concentrations, both WTC and ATC showed efficiency above 80% in removing PA and MF from tab water, groundwater, and Red seawater. These findings nominated natural clay as an alternative to the costly nanomaterials as sorbents for removing pharmaceutical contaminants from water.

show abstract

Section: Resultsmentioning

confidence: 99%

Linear and nonlinear investigations for the adsorption of paracetamol and metformin from water on acid-treated clay

Elamin

Abdulkhair

Algethami

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The Pb metal ions are attached to the surface of the soil particles through weak van der waal forces. (Hu et al, 2019;Murray and Quirk, 1990) Figure 4c displays the photo image of the Pb-contaminated soil treated with oxidized CB. As seen, the oxidized CB particlesare homogenously dispersed in the extraction medium due to its hydrophilic character.…”

Section: Resultsmentioning

confidence: 99%

“…Since the oxidized CB nanoparticles have a much small particles size compared to the particle size of the forces. (Hu et al, 2019;Murray and Quirk, 1990). Figure 4c displays the photo image of the Pbcontaminated soil treated with oxidized CB.…”

Section: Resultsmentioning

confidence: 99%

Efficient Removal of the Toxic Lead Ions from ContaminatedSandy Soils using Newly Engineered Carbon Black Nanoadsorbent

Hafez

2019

Alexandria Journal of Agricultural Sciences

View full text Add to dashboard Cite

Soils contaminated with heavy metals can embarrass a fatal risk to the environment and human life via the direct uptake of the heavy metal-contaminated agricultural crops. Hence, the treatment of metal-contaminated soils is attracting a lot of research activities to reduce the negative impact on the environment. In the current study, I have activated the surface of the carbon black (CB) adsorbent by introducing functional groups capable to efficiently capture the lead (Pb) metal ions from a Pb-contaminated sandy soil. The soil properties (e.g. electrical conductivity, acidity, carbon and nitrogen content, and organic matter) were studied before and after the treatment with the CB adsorbent. I also showed a comprehensive adsorption study in soil-batch extraction experiments, evaluating a series of factors such as the effects of soil pH (pH 3.0 to pH 7.0), Pb concentration into the soil (5-100 mg/L), and the soil temperature (15-50 °C).Furthermore, the recyclability of the adsorbent was highlighted to evaluate adsorption efficiency upon use. The results of the study were remarkable where a 100 % removal efficiency of Pb ions was obtained using only a 40 ppm of the oxidized CB compared to a 60% removal efficiency when using a pristine CB at the same concentration. The adsorption capacity of Pb ions was as high as 100 mg/g at 30 mg/L of oxidized CB adsorbent. The life cycle of oxidized CB adsorbent was also remarkable compared to that of pristine adsorbent. The recyclability data of the functionalized CB has showed an easy regeneration process with an efficient reusefor 5 cycles with 30 %a performance decline of 30 % only from the initial adsorption efficiency.

show abstract

“…Currently, researchers believe that failure of soil aggregate is due to three processes: expansion, explosion, and scattering [1,2]. For a dry soil aggregate, soil particles are controlled by net attraction when the distance between soil particles is less than 1.5 nm [3,4]. In this case, soil aggregate will generally not expand and scatter.…”

Section: Introductionmentioning

confidence: 99%

Effects of Concentration of Pore Solution on Stability of Ion‐Absorbed Rare Earth Ore Aggregate

Wang

Hong

2021

Advances in Civil Engineering

View full text Add to dashboard Cite

The continuous change in solution concentration in ore pores during in situ mineral leaching influences the stability of ore aggregate. In this study, influences of the concentration of ammonium sulfate ((NH4)2SO4) solution on the interaction forces between ore particles were calculated. On this basis, the mechanism by which (NH4)2SO4 solution concentration influences the stability of ore aggregate was analyzed. Furthermore, an empirical formula for estimating the critical (NH4)2SO4 solution concentration for aggregation and dispersion of ore body aggregates with different grain composition was proposed. Some major conclusions were drawn. First, for ore bodies with an initial particle size of less than 0.075 mm, the interaction force between particles was net attraction, with the distance range of this force increasing as the concentration of (NH4)2SO4 solution increased from ≤0.001 to 0.16 mol·L−1, aggregation of ore particles occurring within this distance range. Secondly, for ore bodies with initial particle size of less than 0.075 mm, the interaction force between particles was net attraction, but with the distance range of this force decreasing when the (NH4)2SO4 solution concentration increased from 0.16 to 0.28 mol·L−1, dispersion of ore particles occurring beyond this distance range. Thirdly, for ore bodies with particle sizes of less than 0.038, 0.075 and 0.1 mm, the cation exchange capacity (CEC) was 9.13, 8.96, and 8.8 cmol·kg−1, respectively, and the critical (NH4)2SO4 solution concentration affecting the aggregation and dispersion of ore bodies was 0.12, 0.16, and 0.20 mol·L−1, respectively.

show abstract

Effect of soil particle interaction forces in a clay‐rich soil on aggregate breakdown and particle aggregation

Cited by 11 publications

References 40 publications

Linear and nonlinear investigations for the adsorption of paracetamol and metformin from water on acid-treated clay

Linear and nonlinear investigations for the adsorption of paracetamol and metformin from water on acid-treated clay

Efficient Removal of the Toxic Lead Ions from ContaminatedSandy Soils using Newly Engineered Carbon Black Nanoadsorbent

Effects of Concentration of Pore Solution on Stability of Ion‐Absorbed Rare Earth Ore Aggregate

Contact Info

Product

Resources

About