Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore

Zhibo Zhang; Ziwen Yuan; Lei Hu; Frederic Coulon; Huaxin Liu; Zhanbo Cheng; Shifan Wu; Qian Liu; Xiaoqing Pi; Wei Wu; Xunchang Fei

doi:10.1016/j.jhazmat.2024.135908

Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore

Zhibo Zhang, Ziwen Yuan, Lei Hu, Frederic Coulon, Huaxin Liu, Zhanbo Cheng, Shifan Wu, Qian Liu, Xiaoqing Pi, Wei Wu, Xunchang Fei^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Comprehensive site investigation techniques, including Electrical Resistivity Tomography (ERT), Induced Polarization (IP), Multichannel Analysis of Surface Waves (MASW), and Microtremor Array Method (MAM), were integrated with geotechnical and geochemical tests of retrieved waste samples from Singapore's operational offshore landfill. The properties of landfill wastes vary widely, including shear-wave velocities 127–248 m/s, densities 1.2–2.1 Mg/m³, resistivity 3.0–25.3 Ω∙m, and chargeability 48–82 mV/V. The natural clay layer underneath was clearly delineated and effectively mitigated leachate leakage. K-means clustering of the geophysical data facilitates precise mapping of waste distribution and quantities of recoverable metals based on quantitative criteria. This study illustrates a thorough case study adopting the new site investigation and characterization paradigm for an offshore landfill, which provides insights into leachate leakage detection and evaluations of landfill mining and resource recovery.

Original language	English
Article number	135908
Journal	Journal of Hazardous Materials
Volume	480
DOIs	https://doi.org/10.1016/j.jhazmat.2024.135908
Publication status	Published - Dec 5 2024
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2024 Elsevier B.V.

ASJC Scopus Subject Areas

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

Keywords

3D geophysical modeling
Electrical resistivity tomography
K-means clustering
Landfill investigation
Shear-wave velocity
Time-domain induced polarization

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10.1016/j.jhazmat.2024.135908

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title = "Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore",

abstract = "Comprehensive site investigation techniques, including Electrical Resistivity Tomography (ERT), Induced Polarization (IP), Multichannel Analysis of Surface Waves (MASW), and Microtremor Array Method (MAM), were integrated with geotechnical and geochemical tests of retrieved waste samples from Singapore's operational offshore landfill. The properties of landfill wastes vary widely, including shear-wave velocities 127–248 m/s, densities 1.2–2.1 Mg/m3, resistivity 3.0–25.3 Ω∙m, and chargeability 48–82 mV/V. The natural clay layer underneath was clearly delineated and effectively mitigated leachate leakage. K-means clustering of the geophysical data facilitates precise mapping of waste distribution and quantities of recoverable metals based on quantitative criteria. This study illustrates a thorough case study adopting the new site investigation and characterization paradigm for an offshore landfill, which provides insights into leachate leakage detection and evaluations of landfill mining and resource recovery.",

keywords = "3D geophysical modeling, Electrical resistivity tomography, K-means clustering, Landfill investigation, Shear-wave velocity, Time-domain induced polarization",

author = "Zhibo Zhang and Ziwen Yuan and Lei Hu and Frederic Coulon and Huaxin Liu and Zhanbo Cheng and Shifan Wu and Qian Liu and Xiaoqing Pi and Wei Wu and Xunchang Fei",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

month = dec,

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doi = "10.1016/j.jhazmat.2024.135908",

language = "English",

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T1 - Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore

AU - Zhang, Zhibo

AU - Yuan, Ziwen

AU - Hu, Lei

AU - Coulon, Frederic

AU - Liu, Huaxin

AU - Cheng, Zhanbo

AU - Wu, Shifan

AU - Liu, Qian

AU - Pi, Xiaoqing

AU - Wu, Wei

AU - Fei, Xunchang

PY - 2024/12/5

Y1 - 2024/12/5

N2 - Comprehensive site investigation techniques, including Electrical Resistivity Tomography (ERT), Induced Polarization (IP), Multichannel Analysis of Surface Waves (MASW), and Microtremor Array Method (MAM), were integrated with geotechnical and geochemical tests of retrieved waste samples from Singapore's operational offshore landfill. The properties of landfill wastes vary widely, including shear-wave velocities 127–248 m/s, densities 1.2–2.1 Mg/m3, resistivity 3.0–25.3 Ω∙m, and chargeability 48–82 mV/V. The natural clay layer underneath was clearly delineated and effectively mitigated leachate leakage. K-means clustering of the geophysical data facilitates precise mapping of waste distribution and quantities of recoverable metals based on quantitative criteria. This study illustrates a thorough case study adopting the new site investigation and characterization paradigm for an offshore landfill, which provides insights into leachate leakage detection and evaluations of landfill mining and resource recovery.

AB - Comprehensive site investigation techniques, including Electrical Resistivity Tomography (ERT), Induced Polarization (IP), Multichannel Analysis of Surface Waves (MASW), and Microtremor Array Method (MAM), were integrated with geotechnical and geochemical tests of retrieved waste samples from Singapore's operational offshore landfill. The properties of landfill wastes vary widely, including shear-wave velocities 127–248 m/s, densities 1.2–2.1 Mg/m3, resistivity 3.0–25.3 Ω∙m, and chargeability 48–82 mV/V. The natural clay layer underneath was clearly delineated and effectively mitigated leachate leakage. K-means clustering of the geophysical data facilitates precise mapping of waste distribution and quantities of recoverable metals based on quantitative criteria. This study illustrates a thorough case study adopting the new site investigation and characterization paradigm for an offshore landfill, which provides insights into leachate leakage detection and evaluations of landfill mining and resource recovery.

KW - 3D geophysical modeling

KW - Electrical resistivity tomography

KW - K-means clustering

KW - Landfill investigation

KW - Shear-wave velocity

KW - Time-domain induced polarization

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Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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