Polyelectrolytic Gels for Stabilizing Sand Soil against Wind Erosion

Панова, И. Г.; Ilyasov, Leonid O.; Хайдапова, Д. Д.; Ogawa, Kazuyoshi; Adachi, Yasuhisa; Yaroslavov, Alexander A.

doi:10.1134/s1560090420050103

Cited by 11 publications

(8 citation statements)

References 24 publications

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“…The application of the positively charged IPEC microgel # (+) led only to a slight shift in the water retention curves relative to the control without any change in the soil hydrological constants, excluding the undesirable increase in the wilting point (WP = 7.5%) and a corresponding reduction in the AWR (AWR = FWC–FWC = 5.6%). The specific surface area after IPEC# (+) microgel treatment doubled to a value of 56 m 2 /g, inherent to natural sandy loam (Figure 3), which indirectly confirms the protective crust‐forming properties of this treatment 32 …”

Section: Resultsmentioning

confidence: 54%

“…In our case, the water sorption role of finely dispersed particles obviously belonged to microgel particles, which in the dry state had a size of 35 nm. Having high surface energy, they ensured high absorption of water molecules and strong bonding of sand grains with the formation of organo‐mineral aggregates in the form of a strong crust that protects sand from wind erosion 32 . Such a significant change in the structural organization of sand after treatment with microgels was also reflected in the pore size distribution (Figure 2(b)).…”

Section: Resultsmentioning

confidence: 98%

“…The initial PAA# microgel and the negative and positive IPEC# were used for modification of the sandy and loamy sandy soil substrates as described in Experimental Section 4. In comparison, we tested a linear anionic polymer, PAA, which has been earlier used for soil stabilization 32 . The characteristics of PAA particles in the PAA aqueous formulation are also represented in Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…Addition of a pH 6 PDADMAC solution to a pH 6 PAA# solution resulted in formation of IPEC# 32 . Two aqueous formulations were thus prepared: Based on a negatively charged IPEC#(−) with a 3‐fold molar excess of PAA# and based on a positively charged IPEC#(+) with a 3‐fold molar excess of PDADMAC.…”

Section: Methodsmentioning

confidence: 99%

“…In our opinion, microgels can become such multifunctional soil conditioners. Therefore, in this study, we compare the water‐holding properties of microgels and other synthetic conditioners previously developed to protect soils from water and wind erosion 31–33 . Apparently at a quantitative level this problem is being solved for the first time, since the effect of microgels on the hydrophysical properties of soils is not described in the literature.…”

Section: Introductionmentioning

confidence: 99%

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Water retention in sandy substrates modified by cross‐linked polymeric microgels and their complexes with a linear cationic polymer

Smagin

Панова

Ilyasov

et al. 2021

J of Applied Polymer Sci

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New synthetic soil conditioners for anti‐erosion protection of soils in the form of microgel copolymers of N‐isopropylacrylamide and acrylic acid (PAA#) and their interpolyelectrolyte complexes (IPEC#) with different surface charges are tested for optimization of water retention and porous structure in two samples of soil substrates. Water retention curves (WRCs) are used as a fundamental thermodynamic indicator of water holding capacity in soil substrates treated by new polymeric materials. Soil‐hydrological constants, as well as specific surface parameters and pore distribution curves are calculated from the WRCs using the van Genuhten model and the Voronin method in the author's modification. PAA# and anionic IPEC# with high swelling degree at a dose of 1% (by weight) increase field water capacity, available soil water range and specific surface area by 5–6 times for quartz sand, along with reorganizing its structure towards micropore dominance. For loamy sand, the same treatment was less effective with a twofold increase in field moisture capacity, double or triple increase of specific surface area, and an almost constant range of available soil water due to the strong increase of wilting point parameter. Weakly swelling linear polyacrylic acid and cationic IPEC# did not significantly affect properties of both mineral substrates.

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Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Water retention in sandy substrates modified by cross‐linked polymeric microgels and their complexes with a linear cationic polymer

Smagin

Панова

Ilyasov

et al. 2021

J of Applied Polymer Sci

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Determining the effectiveness of some soil stabilizers in wind erosion prevention using wind tunnel experiments

et al. 2021

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Laboratory wind tunnel simulations were carried out to determine the effectiveness of some soil stabilizers in reducing soil loss by wind erosion under turbulent flow conditions driven by the reference wind velocities of 9 and 11 m s−1. Particle fractions of 0.5–1 mm of two different soil types: silty clay loam (SiCL) and sandy loam (SL) were used in the experiments as erodible test surfaces after stabilizer treatments. Molasses (M), cement (Cm), a mixture of cement and molasses (Cm + M), and hydrogel (H) were applied at four different application doses, and later those materials were subjected to incubation at room temperature for 24 hr before the trays were placed in the tunnel for wind tests. During simulations under turbulent air‐flow conditions, soil losses [(qs), g m−2 min−1] were gauged for 10‐min duration immediately following the first lift‐off movement of the particles. Experimental results on qs were compared to those of two controls [untreated control (C) and water‐treated control (Cw)], which indicated that the H applications were highly effective at the doses ≥ 13.33 g m−2 for every soil type and wind velocity combination. In addition, at the application doses ≥ 13.33 g m−2, Cm and Cm + M treatments were as effective as H statistically in reducing qs at 9 m s−1 by successfully forming resistant crust layers against stronger turbulent swirls on the research test surfaces. From the point of being more easily accessible and more cost‐effective, using less expensive Cm and Cm + M treatments could be a good alternative to utilizing hydrogel in reducing wind erosion in wide field applications.

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