The Effect of Two Nonionic Surfactants on Aggregate Stability of Soils

Mustafa, M. A.; Letey, J.

doi:10.1097/00010694-196905000-00006

Cited by 40 publications

(16 citation statements)

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“…() noted that clay interacts strongly with surfactants. Hydrophilic functional groups of the amphiphilic surfactant molecules might sorb to the hydrophilic hydroxyl groups on kaolinitic clay surfaces, resulting in the surfactant's hydrophobic groups extending into the soil solution, thereby increasing water repellency (Mustafa and Letey, ; Doerr et al ., ; Lehrsch and Sojka, ). This postulated mechanism would increase runoff from surfactant‐treated, kaolinitic soils such as the wettable Faceville, as was reported by Sullivan et al .…”

Section: Discussionmentioning

confidence: 99%

“…Absence of an effect on sediment loss implies no surfactant effect on water‐stable aggregation or aggregate stability. Mustafa and Letey () studied the aggregate stability of wettable soils pretreated with nonionic surfactant solutions and concluded that surfactants generally did not improve soil structure in wettable soils. In contrast, Law et al .…”

Section: Introductionmentioning

confidence: 97%

“…On the one hand, by reducing surface tension, surfactants allow water to more easily and quickly enter fine pores in soil aggregates (Fernández Cirelli et al ., ; Laha et al ., ), potentially leading to the damaging effects of slaking and aggregate breakdown (von Lützow et al ., ; Hallett, ). On the other hand, surfactants added to wettable soil particles may be positioned such that their nonpolar hydrophobic ends extend into the soil solution, thus decreasing wettability to reduce slaking, leading to increased aggregate stability (Mustafa and Letey, ).…”

Section: Introductionmentioning

confidence: 99%

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Surfactant effects on the water‐stable aggregation of wettable soils from the continental USA

Lehrsch

2012

Hydrological Processes

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Surfactants may affect soil structure differently depending upon the soil or the quality of rainfall or irrigation water. This study examined whether the water‐stable aggregation of 11 wettable soils was affected by surfactants and the water in which the soils were sieved. The study also examined whether the wettable soils' water drop penetration time (WDPT) was affected by surfactants, water drop quality, and elapsed time since the surfactants were applied. Two nonionic surfactants and a surfactant‐free water control were sprayed (by misting) upon air‐dry soil, then WDPT was measured 1 and 72 h thereafter. Subsequently, this treated soil was slowly wetted with an aerosol to its water content at a matric potential of −3 kPa, then immediately sieved for 600 s in water that contained either appreciable or few electrolytes. Water‐stable aggregation, quantified as mean weight diameter (MWD), varied widely among soils, ranging from 0.10 to 1.36 mm. The MWDs were affected (at p = 0.06) by surfactant treatments, depending upon the soil but not sieving water quality. Surfactants affected the MWD of an Adkins loamy sand and Feltham sand, two of the three coarsest‐textured soils. Although WDPTs never exceeded 5 s, depending upon the soil WDPTs were affected by surfactant treatments but not by water drop quality. After surfactant application, WDPTs generally decreased with time for three soils but increased with time for one soil. Findings suggested that surfactants interacted (1) with clay mineralogy to affect MWD and (2) with soluble calcium to affect WDPT for certain soils. Surfactant treatments but not water quality affected both MWD and WDPT for some but not all of 11 wettable, US soils. Published 2012. This article is a US Government work and is in the public domain in the USA.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Surfactant effects on the water‐stable aggregation of wettable soils from the continental USA

Lehrsch

2012

Hydrological Processes

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“…Dispersion was studied as Dispersion Index (DI) as defined by Mustafa and Letey (7) and was calculated using DI% = {water dispersible (silt + clay)/total (silt + clay)} Â 100. Twenty grams of ,2 mm soil was placed in a 1L cylinder and water of the same quality was slowly added.…”

Section: Dispersionmentioning

confidence: 99%

Saturated hydraulic conductivity, dispersion, swelling, and exchangeable sodium percentage of different textured soils as influenced by water quality

Chaudhari¹

2001

Communications in Soil Science and Plant Analysis

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Effects of water quality on saturated hydraulic conductivity, dispersion, swelling, and exchangeable sodium build-up in clay (Typic Haplustert), clay loam (Vertic Haplustept) and silt loam (Lithic Ustorthent) soils were studied. Soil samples were equilibrated with twenty-four water quality combinations encompassing four total electrolyte concentrations (TEC) from 5 to 50 me L 21 ; and six sodium adsorption ratios (SAR) ranging between 2.5 and 30 m mol 1/2 L 21/2 . Saturated hydraulic conductivity ranged from 0.009 to 0.157, 0.016 to 0.235; and 0.453 to 22.76 cm h 21 , dispersion index from 11.6 to 26.0, 8.3 to 24.9; and 5.7 to 13.2%, coefficient of linear extensibility from 0.05 to 0.21, 0.03 to 0.14; and 0.007 to 0.032; and exchangeable sodium percentage (ESP) from 2.23 to 20.0, 3.18 to 24.55; and 4.26 to 32.4 for clay, clay loam, and silt loam soils, respectively. Dependence of saturated hydraulic conductivity on water quality parameters (TEC and 2439

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“…In another study, Lentz (2003) found that a one-time 20 mL application of a 0.1 mol kg -1 sodium lauryl sulfate solution (anionic surfactant) produced a 61% to >99% reduction in seepage through silt loam and clay loam soil columns, but quadrupled seepage losses through loamy sand, relative to controls. Conductivity reductions from surfactant treatments have been attributed to increased soil solution viscosity, surfactant adsorption, precipitation (Allred and Brown, 1994), and micelle formation (Miller et al, 1975), or increased soil dispersion and aggregate destabilization (Mustafa and Letey, 1969).…”

mentioning

confidence: 99%

Polyacrylamide Treatments for Reducing Seepage in Soil-Lined Reservoirs: A Field Evaluation

Lentz¹,

Kincaid²

2008

Transactions of the ASABE

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The Effect of Two Nonionic Surfactants on Aggregate Stability of Soils

Cited by 40 publications

References 0 publications

Surfactant effects on the water‐stable aggregation of wettable soils from the continental USA

Surfactant effects on the water‐stable aggregation of wettable soils from the continental USA

Saturated hydraulic conductivity, dispersion, swelling, and exchangeable sodium percentage of different textured soils as influenced by water quality

Polyacrylamide Treatments for Reducing Seepage in Soil-Lined Reservoirs: A Field Evaluation

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