Influence of soil moisture on hydrophobicity and water sorptivity of sandy soil no longer under agricultural use

Hewelke, Edyta; Gozdowski, Dariusz; Korc, M.; Małuszyńska, Ilona; Górska, Ewa; Sas, Wojciech; Mielnik, Lilla

doi:10.1016/j.catena.2021.105780

Cited by 17 publications

(8 citation statements)

References 76 publications

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“…The test steps were briefly stated as follows: the soil was placed in a Petri dish (diameter of 8 cm) and was slightly compacted and leveled with a scraper. Deionized water (50 µL) was dropped on the sample surface with a pipette; the Petri dish was covered with a food-wrap to prevent evaporation, and the penetration time was recorded (Figure S2) [40][41][42]. The measured contact angle of the passivated waste rock was 170.1 • , and the WDPT exceeded 3600; thus, it is extremely hydrophobic.…”

Section: Measurement Of Soil Hydrophobicitymentioning

confidence: 99%

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Hydrogeochemical Responses of MTMS-Coated Capillary Cover under Heavy Rainfalls

et al. 2023

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To limit the oxidation of waste rocks that originates from mining operations and the subsequent leaching of acidic solutions with high concentration of metal ions, a tailing–rock–clay triple layer capillary cover system was developed to prevent rainwater infiltration in humid climatic regions. The fine grained soil (FGS) layer consists of mine tailing and a hydrodesulfurization (HDS) clay from waste-water treatment with a 95:5 mass ratio. The coarse grained soil (CGS) layer consists of local waste rock granules with a size of 1–10 mm. Methyltrimethoxysilane (MTMS), an oxidation-inhibiting agent with strong hydrophobicity, was passivated on the rock grains to further reduce water infiltration and leaching of metal ions. Prototype-scale column tests were performed with matric suction and water content measurements under 680 min rainfall of 60 mm/h, the most severe annual precipitation case scenario for the Dexing Copper Mine (Jiangxi Province, China, 28.95° N, 117.57° E, humid climate). Both the uncoated and the coated covers exhibited zero leakage throughout the experiment. The passivation on rock granules in the coated cover increased the water entry value (WEV) of the CGS layer to −0.56 kPa. This led to a 15 mm water storage increment in the overlain FGS layer as compared to that in the uncoated cover, and induced lateral drainage (5% of the precipitation) in the FGS layer, which was not overserved in the uncoated cover. The concentrations of the leached Fe2+, Cu2+, Zn2+, Mn2+ and Mg2+ cations drained from the CGS layers of the uncoated cover were 0, 0.4, 0.8, 73.5, and 590.5 mg/L, which are all within the regulation limits of industrial discharge water standards. The concentrations of Cu2+, Mn2+ and Mg2+ cations drained from the coated CGS layer were reduced by 1–3 orders of magnitude. The abovementioned laboratory studies validated the water retention and leaching prevention abilities of the proposed three-layer capillary covers and the MTMS coating, which hold promises in engineering applications.

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Section: Measurement Of Soil Hydrophobicitymentioning

confidence: 99%

“…and leveled with a scraper. Deionized water (50 µL) was dropped on with a pipette; the Petri dish was covered with a food-wrap to preven the penetration time was recorded (Figure S2) [40][41][42]. The measured passivated waste rock was 170.1°, and the WDPT exceeded 3600; thus drophobic.…”

Section: Geotechnical and Hydrogeological Propertiesmentioning

confidence: 99%

Hydrogeochemical Responses of MTMS-Coated Capillary Cover under Heavy Rainfalls

et al. 2023

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“…Similarly, droughts can trigger soil erosional processes as dry soils are more vulnerable to mass movement by wind or water. As soils dry and the vegetative cover is diminished, there is a subsequent reduction in water infiltration and an increase in surface runoff (Le Houérou, 1996;Hewelke et al, 2022). Each of which contributes to developing soils highly vulnerable to accelerated erosion (Ahn et al, 2013;Bombino et al, 2019).…”

Section: Interrelation Between Droughts and Soil Erosionmentioning

confidence: 99%

Combining RUSLE model and the vegetation health index to unravel the relationship between soil erosion and droughts in southeastern Tunisia

Terwayet Bayouli,

Zhang,

Terwayet Bayouli

2023

J. Arid Land

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Droughts and soil erosion are among the most prominent climatic driven hazards in drylands, leading to detrimental environmental impacts, such as degraded lands, deteriorated ecosystem services and biodiversity, and increased greenhouse gas emissions. In response to the current lack of studies combining drought conditions and soil erosion processes, in this study, we developed a comprehensive Geographic Information System (GIS)-based approach to assess soil erosion and droughts, thereby revealing the relationship between soil erosion and droughts under an arid climate. The vegetation condition index (VCI) and temperature condition index (TCI) derived respectively from the enhanced vegetation index (EVI) MOD13A2 and land surface temperature (LST) MOD11A2 products were combined to generate the vegetation health index (VHI). The VHI has been conceived as an efficient tool to monitor droughts in the Negueb watershed, southeastern Tunisia. The revised universal soil loss equation (RUSLE) model was applied to quantitatively estimate soil erosion. The relationship between soil erosion and droughts was investigated through Pearson correlation. Results exhibited that the Negueb watershed experienced recurrent mild to extreme drought during 2000–2016. The average soil erosion rate was determined to be 1.8 t/(hm2·a). The mountainous western part of the watershed was the most vulnerable not only to soil erosion but also to droughts. The slope length and steepness factor was shown to be the most significant controlling parameter driving soil erosion. The relationship between droughts and soil erosion had a positive correlation (r=0.3); however, the correlation was highly varied spatially across the watershed. Drought was linked to soil erosion in the Negueb watershed. The current study provides insight for natural disaster risk assessment, land managers, and stake-holders to apply appropriate management measures to promote sustainable development goals in fragile environments.

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“…Soils affected by fire have a longer persistence of SWR (Hewelke, Szatyłowicz, et al, 2018; Plaza‐Álvarez et al, 2018), whereas the longest effect has been observed in oil‐contaminated soils (Roy & McGill, 1998). Soil unpolluted with PHs may have a maintained or increased S w through proper cultivation, fertilisation, pH regulation and water management (Hewelke et al, 2022; Kraemer et al, 2019; Lichner et al, 2018; Shaver et al, 2003; Shaver et al, 2013; Villarreal et al, 2017). Oil‐induced hydrophobicity is much stronger and remains remarkably persistent for decades after the leakage has occurred (Roy & McGill, 1998) or even after biological soil treatment to reduce hydrocarbon concentrations (Li et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Influence of contamination with diesel oil on water sorptivity and hydrophobicity of sandy loam soil

et al. 2023

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This paper shows the changes in water sorptivity (S w ) and hydrophobicity following soil contamination with petroleum hydrocarbons (PHs) under different soil moistures.Laboratory experiments were carried out to verify that contamination with PHs reduces S w , thus affecting the infiltrability, which in practice influences the field water capacity and the availability of water for plants. Soil water repellency (SWR) was estimated by the repellency index (R) and water drop penetration time (WDPT).The increase in PHs contamination contributed to SWR and caused a significant decrease in S w . With the decrease in moisture, the water sorptivity of the soil increased, reaching its maximum at 0.12-0.15 cm 3 cm À3 , which was the threshold value in the case of the analysed soil, and then decreased drastically. The R index and the WDPT revealed a similar trend, inversely related to the level of soil contamination with PHs. The increase in SWR and the accompanying decrease in S w made the soil less resistant to drought. The total amount of water available to plants in the control soil was 19.04%, whereas contamination with PHs equal to 100 g kg À1 caused a decrease to 6.36%. The almost threefold decrease in the total amount of water has a fundamental influence on increasing the risk of soil drought. The results obtained indicated that the interrelationship presented between the level of contamination with PHs, water sorptivity, SWR and soil moisture are the keys to predicting the environmental effects of contamination with PHs. The obtained results indicate that the undertaken remediation measures aimed at restoring the hydrological function of the soil system should be preceded by an assessment of soil hydrophobicity.

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Influence of soil moisture on hydrophobicity and water sorptivity of sandy soil no longer under agricultural use

Cited by 17 publications

References 76 publications

Hydrogeochemical Responses of MTMS-Coated Capillary Cover under Heavy Rainfalls

Hydrogeochemical Responses of MTMS-Coated Capillary Cover under Heavy Rainfalls

Combining RUSLE model and the vegetation health index to unravel the relationship between soil erosion and droughts in southeastern Tunisia

Influence of contamination with diesel oil on water sorptivity and hydrophobicity of sandy loam soil

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