Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore
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 Singap...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/180709 |
| _version_ | 1826125405136879616 |
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| author | Zhang, Zhibo Yuan, Ziwen Hu, Lei Coulon, Frederic Liu, Huaxin Cheng, Zhanbo Wu, Shifan Liu, Qian Pi, Xiaoqing Wu, Wei Fei, Xunchang |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Zhang, Zhibo Yuan, Ziwen Hu, Lei Coulon, Frederic Liu, Huaxin Cheng, Zhanbo Wu, Shifan Liu, Qian Pi, Xiaoqing Wu, Wei Fei, Xunchang |
| author_sort | Zhang, Zhibo |
| collection | NTU |
| description | 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. |
| first_indexed | 2025-03-09T14:01:37Z |
| format | Journal Article |
| id | ntu-10356/180709 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-03-09T14:01:37Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1807092024-10-21T07:33:59Z Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore Zhang, Zhibo Yuan, Ziwen Hu, Lei Coulon, Frederic Liu, Huaxin Cheng, Zhanbo Wu, Shifan Liu, Qian Pi, Xiaoqing Wu, Wei Fei, Xunchang School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Residues and Resource Reclamation Centre Engineering Landfill investigation Electrical resistivity tomography 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. National Environmental Agency (NEA) National Research Foundation (NRF) This research/project is supported by the National Research Foundation, Singapore, and the National Environment Agency, Singapore under its Closing the Waste Loop Funding Initiative (Award No. USS-IF2021–4). Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not reflect the views of National Research Foundation, Singapore, and the National Environment Agency, Singapore. 2024-10-21T07:33:59Z 2024-10-21T07:33:59Z 2024 Journal Article Zhang, Z., Yuan, Z., Hu, L., Coulon, F., Liu, H., Cheng, Z., Wu, S., Liu, Q., Pi, X., Wu, W. & Fei, X. (2024). Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore. Journal of Hazardous Materials, 480, 135908-. https://dx.doi.org/10.1016/j.jhazmat.2024.135908 0304-3894 https://hdl.handle.net/10356/180709 10.1016/j.jhazmat.2024.135908 39307015 2-s2.0-85204493221 480 135908 en USS-IF2021–4 Journal of Hazardous Materials © 2024 Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies. |
| spellingShingle | Engineering Landfill investigation Electrical resistivity tomography Zhang, Zhibo Yuan, Ziwen Hu, Lei Coulon, Frederic Liu, Huaxin Cheng, Zhanbo Wu, Shifan Liu, Qian Pi, Xiaoqing Wu, Wei Fei, Xunchang Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore |
| title | Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore |
| title_full | Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore |
| title_fullStr | Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore |
| title_full_unstemmed | Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore |
| title_short | Comprehensive geophysical, geotechnical, and geochemical assessments of an offshore landfill in Singapore |
| title_sort | comprehensive geophysical geotechnical and geochemical assessments of an offshore landfill in singapore |
| topic | Engineering Landfill investigation Electrical resistivity tomography |
| url | https://hdl.handle.net/10356/180709 |
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