Water Retention Behaviour of Unsaturated Soils Subjected to Various Temperatures in Northwest China DOI
Feifei Liu, Cheng Xu, Xuesong Mao

et al.

Published: Jan. 1, 2023

Soil water retention evaluation plays a crucial role analyzing unsaturated soil properties and addressing related engineering issues. The objectives of this study are to explore the behaviour soils subjected various temperatures, develop corresponding mathematical models for characteristic curves (SWCCs). In paper, simple time-saving method was employed measure suction experimental temperature range -20 °C 45 °C. Then influence moisture content on dependence investigated. Based data, performance three data-fitting (Brooks-Corey (BC), van Genuchten (VG) Fredlund-Xing (FX) models) were evaluated fitting SWCCs at temperatures. results showed that tended decay with increasing temperature. variation found be categorized into maximum value (Rmax), strong sensitive (RTS) weak (RTW). With an increase in content, Rmax decreased, while RTW increased. When greater than 0 °C, effect attenuated by growing when 15.6%, extremely weak. However, less appeared more pronounced content. Among models, best VG model highlighted throughout ranged from Finally, modification proposed consider

Language: Английский

Experimental and simulated microplastics transport in saturated natural sediments: Impact of grain size and particle size DOI Creative Commons
Wang Li, Giuseppe Brunetti, Christian Zafiu

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 468, P. 133772 - 133772

Published: Feb. 10, 2024

Microplastics (MPs) present in terrestrial environments show potential leaching risk to deeper soil layers and aquifer systems, which threaten health drinking water supply. However, little is known about the environmental fate of MPs natural sediments. To examine transport mechanisms sediments, column experiments were conducted using different sediments (10-150 µm) with conservative tracer. Particle breakthrough curves (BTCs) retention profiles (RPs) numerically interpreted HYDRUS-1D three models identify most plausible deposition mechanism MPs. Results that efficiency for a given particle size increased decreasing grain size, RPs exacerbated their hyper-exponential shape finer Furthermore, amounts effluent over 85% as decreased 10-20 µm both gravel coarse sand columns, while all larger (125-150 retained column. The modeling results suggested blocking becomes more important increasing sizes. In particular, attachment-detachment without was suited parameterization interpret movement small MPs, depth-dependent approach necessary adequately describe particles.

Language: Английский

Citations

18
Environmental pitfalls and associated human health risks and ecological impacts from landfill leachate contaminants: Current evidence, recommended interventions and future directions DOI Creative Commons
Viraj Gunarathne,

Ankur J. Phillips,

Alessandra Zanoletti

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169026 - 169026

Published: Dec. 4, 2023

The improper management of solid waste, particularly the dumping untreated municipal poses a growing global challenge in both developed and developing nations. generation leachate is one significant issues that arise from this practice, it can have harmful impacts on environment public health. This paper presents an overview primary waste types generate landfill their characteristics. includes examining distribution landfills globally how they changed over time, which provide valuable insights into potential pollutants given area trends. With lack specific regulations concerns regarding environmental health impacts, also focuses emerging contaminants. Furthermore, ecological leachate, along with associated risks, are analyzed. applications suggested interventions future directions discussed manuscript. Finally, work addresses research studies, attention, for first time to potentialities artificial intelligence offer management, applications.

Language: Английский

Citations

23
Effects of tire wear particles on the water retention of soils with different textures in the full moisture range DOI Creative Commons

Amir Verdi,

Mahyar Naseri

Journal of Contaminant Hydrology, Journal Year: 2024, Volume and Issue: 264, P. 104345 - 104345

Published: April 18, 2024

Tire wear particles (TWPs) are significant contributors to microplastic pollution in the environment, yet there is limited scientific information concerning their impact on soil hydraulic properties. This study aimed investigate of TWPs at different concentrations (1, 4, 8, and 16% air-dried mass packed samples, w/w) water retention curves (WRC) southern California soils with five textures (clay, clay loam, silt sandy loamy sand). The 8% were selected represent extreme scenarios that might occur near highway corridors. High-resolution data, spanning from saturation oven dryness, generated using HYPROP™ WP4C dew point meter instruments. We also developed WRC scaling equations based quantity TWPs. bulk density samples decreased as TWP concentration increased. inclusion very high (8% led a reduction moisture content intermediate dry ranges across various textures. However, same range, adding 1% had minimal reduction, while influence 4% treatment was noticeable only sand partially loam soils. Additionally, overall plant available increasing concentrations, except for soil. texture-specific models exhibited promising performance, RMSE values ranging 0.0061 0.0120 cm3 cm−3. When included an additional input predictor construct single model all textures, Nevertheless, it still indicated good fit 0.007 0.024 cm−3, highlighting suitability simple identifying TWPs-polluted soils, particularly practical purposes. findings this can contribute better understanding quantification hydrology.

Language: Английский

Citations

5
Insights into simultaneous changes of water evaporation and desiccation crack formation for microplastics-contained saline soils DOI Creative Commons

Haoxuan Feng,

Xuguang Xing,

Fengyue Zhao

et al.

Geoderma, Journal Year: 2024, Volume and Issue: 448, P. 116977 - 116977

Published: July 27, 2024

Increasing soil salinization and microplastics (MPs) pollution of farmland have become global agricultural issues that to be faced, destabilizing plant-soil systems bringing threats ecosystems. Few studies focused on the effects MPs saline water evaporation desiccation crack formation, underlying influencing mechanisms salts in soils. A mechanism test was conducted explore concentrations (0.5 %, 1 3 w/w) simultaneous changes cracking patterns soils with different salinities (0, 0.1 0.3 0.5 w/w). Quantitative findings showed (1) significantly reduced saturated conductivity by 14.9–46.8 % 4.6–54.5 non-saline lightly soil, respectively, which a decreasing trend increasing concentration; besides, also conductivity, but inhibition weakened salinity. (2) The total porosity 2.2–7.9 1.8–6.6 soils, exhibited slight concentration. (3) 0.4–6.1 0.9–6.5 respectively. As concentration increased, decreased, firstly decreased then increased. After evaporation, both salt inhibited cracking. Correlations indicated presence their interactions explained more than half variability characteristics parameters. Mechanism exploration suggested affect process behavior changing pore size distribution, damaging structure, repellency particles; inhibit surface through osmotic suction, blocking macropores, promoting inter-microaggregate cementation. Our provide evidences for influences physical properties, development, deserving attentions regulations developments soil-crop facing plastic pollution.

Language: Английский

Citations

5
Potential improvement in the mechanical performance and thermal resistance of geopolymer with appropriate microplastic incorporation: A sustainable solution for recycling and reusing microplastics DOI Creative Commons
Yuekai Xie, Chenman Wang, Hongxu Wang

et al.

Waste Management, Journal Year: 2024, Volume and Issue: 189, P. 137 - 147

Published: Aug. 27, 2024

The accumulation of microplastics (MPs) has been a major threat to the natural environment and human health. However, incineration landfilling may not be appropriate for management MPs. This paper evaluated feasibility incorporating MPs with diverse dimensions (50 500 μm) contents (2.5 % 10 %) into geopolymer cured under different temperatures (40 80 °C). compressive (f

Language: Английский

Citations

4
Modeling microplastic transport through porous media: challenges arising from dynamic transport behavior DOI Creative Commons
Xiaomei Yang, Darrell W.S. Tang

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 484, P. 136728 - 136728

Published: Nov. 30, 2024

Language: Английский

Citations

4
Enhanced mechanical and thermal performance of high-strength engineered geopolymer composites reinforced by hybrid polyethylene fibres and carbon nanotubes DOI Creative Commons
Yuekai Xie

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 472, P. 140884 - 140884

Published: March 19, 2025

Language: Английский

Citations

0
Development of a sustainable engineered geopolymer composite with mitigated autogenous shrinkage, enhanced mechanical performance, and improved thermal behaviour by recycled concrete powder DOI Creative Commons
Yuekai Xie, Yingying Guo, Jianfeng Xue

et al.

Powder Technology, Journal Year: 2025, Volume and Issue: unknown, P. 121087 - 121087

Published: May 1, 2025

Language: Английский

Citations

0
Effects of microplastic contamination on the hydraulic, water retention, and desiccation crack properties of a natural clay exposed to leachate DOI Creative Commons
Yuekai Xie, Hongxu Wang, Yingying Guo

et al.

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 351, P. 119858 - 119858

Published: Dec. 20, 2023

Microplastic (MP) can significantly affect soil behaviour and the ecosystem. This paper presents an experimental study to investigate effects of MP contamination leachate exposure on desiccation cracks, hydraulic conductivity, water retention properties natural black clay. The was from a landfill in Australia. clay incorporated with up 2.0% MPs by weight (w/w) diverse dimensions mixed water/leachate. measured include saturated conductivity (k

Language: Английский

Citations

9
Experimental investigations of water retention curves of fresh and decomposed municipal solid wastes under multiple drying and wetting cycles DOI Creative Commons
Yuekai Xie, Jianfeng Xue

Acta Geotechnica, Journal Year: 2024, Volume and Issue: 19(7), P. 4989 - 4999

Published: April 15, 2024

Abstract Municipal solid wastes (MSWs) disposed in landfills are generally exposed to drying and wetting cycles because of the variation environmental conditions, decomposition organics leachate recirculation. This paper studies water retention curves (WRCs) fresh degraded MSWs under various numbers with exposure. The result indicates that capacities decrease cycles. maximum hysteresis between is observed first for all MSW samples. WRCs medium highly decomposed similar those soils. can undergo substantial changes due discharge intra-particle moisture caused by compression. For both MSWs, stabilize after 3 However, only one initial composition void ratios were investigated. Further research should be conducted investigate behavior diverse compositions (e.g., food contents) ratios.

Language: Английский

Citations

3