Breakthrough times for barrier systems at typical municipal solid waste landfills in China

Shu, Shi; Peng, Chengjian; Liu, Huan; Meng, Lifu

doi:10.1007/s11356-023-26645-7

Cited by 5 publications

(4 citation statements)

References 27 publications

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“…Previous studies have shown that the GCL can reduce the ground subsidence caused by garbage leakage, improve the stability of landfills and prolong the service life of landfills [35,36]. One of the main components of the GCL is bentonite particles, and the adsorption of bentonite particles is pretty large, resulting in the fact that the retention mechanism of the GCL is quite different from traditional porous media [37]. However, investigations on the transport of GONPs in the GCL are still ongoing.…”

Section: Introductionmentioning

confidence: 99%

Effects of Temperature, Ionic Strength and Humic Acid on the Transport of Graphene Oxide Nanoparticles in Geosynthetic Clay Liner

Liu,

Jiang

2024

Materials

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With the wide application of graphene oxide nanoparticles (GONPs), a great amount of GONP waste is discarded and concentrated in landfills. It has been proven that GONPs have strong toxicity and could gather toxic substances due to their high adsorption capacity. GONPs will seriously pollute the surrounding environment if they leak through the geosynthetic clay liner (GCL) in landfills. To investigate various factors (temperature, ionic strength (IS) and humic acid (HA)) on the transport and retention of GONPs in the GCL, a self-designed apparatus was created and column tests were carried out. The experimental results show that GONPs could be transported through the GCL. The mobility and sorption ratio of GONPs in GCL decreased with an increase in temperature and IS, and increased with an increase in HA. The temperature had little effect on the deposition ratio of GONPs in the GCL. The deposition ratio of GONPs in the GCL increased with IS, and decreased with an increase in HA. The transport of GONPs in GCL, glass beads and quartz sand was compared, and the results show that the retention ability of the GCL is much better than other porous materials. The experimental results could provide significant references for the pollution treatment in landfills.

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Section: Introductionmentioning

confidence: 99%

Effects of Temperature, Ionic Strength and Humic Acid on the Transport of Graphene Oxide Nanoparticles in Geosynthetic Clay Liner

Liu,

Jiang

2024

Materials

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“…In the design of vertical barriers, the determination of potential service life is typically essential (Touze-Foltz et al, 2021). Previous studies have reported that the service life depends on the breakthrough time, which is defined as the time when the contaminant concentration at the outer edge of the barrier exceeds 10% of the source concentration (Chen et al, 2020;Shu et al, 2023;Xie et al, 2018;Yang et al, 2022). The anticipated breakthrough time should be greater than the sum of landfill operation period (20-30 years) and the waste stabilization time (10-20 years), typically 50 years (Chen et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Traditional analytical solutions, such as the advection-diffusion equation (ADE), have been proposed to describe contaminant transport, but their application is often limited in practical engineering sites due to the complex hydrogeological conditions encountered (Peng et al, 2020;Sanskrityayn et al, 2018;Xie et al, 2018;Yan et al, 2021). As a result, numerical simulation studies have gained popularity for analysing the migration of pollutants within vertical barrier and aquifer systems (Golmohammadi et al, 2016;Jafari et al, 2021;Matiatos et al, 2019;Shu et al, 2023;Touze-Foltz et al, 2021). For instance, Kumar analysed and compared several groundwater transport simulation software and proposed requirements for determining specific simulation studies and collecting/ monitoring necessary data (Kumar, 2015).…”

Section: Introductionmentioning

confidence: 99%

Modelling of contaminant transport in heterogeneous vertical barrier

Shaoyi,

Jiawei,

Peifu

et al. 2023

Water & Environment J

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Vertical barrier technique is an ideal candidate for site contamination control. In practical application, the characteristic of vertical cut‐off wall is heterogeneous with permeability decreases with depth due to the increasing geostatic stress. In this study, a numerical model was established considering the coupling effect of groundwater flow and contaminant transport considering depth dependent permeability. The results showed that a heterogeneous barrier with variable permeability can reduce the breakthrough time by 63.7% compared to a fixed permeability barrier. The contaminant concentration inside the wall was up to 10 times higher than outside. Shallow leakage occurs where the horizontal migration is dominated by advection. The distribution of pore‐water pressure in the system after the installation of high‐density polyethylene (HDPE) membranes significantly reduced the shallow convective effect by reducing up to 90% pore‐water pressure. Reinforcing the vertical barrier wall using HDPE membrane can effectively prevent the shallow leakage caused by the heterogeneity.

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“…Benchmarking against success stories Learning from others extends beyond passive knowledge acquisition; it involves benchmarking against successful projects worldwide. By evaluating projects that have achieved exemplary outcomes, project managers can distill valuable lessons and principles that transcend geographical boundaries [39][40][41][42]. The study by Loushine and Smith et al (2006) [43] specifically underscores the significance of benchmarking against these success stories.…”

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confidence: 99%

Critical Study Quality Management for the Anti-Seepage System in Macau’s Landfill Area

Li,

Tang,

Mak

et al. 2024

Applied Sciences

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This paper delves into the Macau landfill’s anti-seepage system project quality management, highlighting its environmental significance. We summarize global research and provide an overview of the project, emphasizing the importance of quality control across phases. We focus on monitoring, evaluation, and inspection methods to ensure quality objectives. Our findings contribute to environmental preservation and sustainability.

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Breakthrough times for barrier systems at typical municipal solid waste landfills in China

Cited by 5 publications

References 27 publications

Effects of Temperature, Ionic Strength and Humic Acid on the Transport of Graphene Oxide Nanoparticles in Geosynthetic Clay Liner

Effects of Temperature, Ionic Strength and Humic Acid on the Transport of Graphene Oxide Nanoparticles in Geosynthetic Clay Liner

Modelling of contaminant transport in heterogeneous vertical barrier

Critical Study Quality Management for the Anti-Seepage System in Macau’s Landfill Area

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