Geophysical investigation of glass ‘hotspots’ in glass dumps as potential secondary raw material sources
(2020) In Waste Management 106. p.213-225- Abstract
This study investigates the potential for Electrical Resistivity Tomography (ERT) to detect buried glass ‘hotspots’ in a glass waste dump based on results from an open glass dump investigated initially. This detection potential is vital for excavation and later use of buried materials as secondary resources. After ERT, test pits (TPs) were excavated around suspected glass hotspots and physico-chemical characterisation of the materials was done. Hotspots were successfully identified as regions of high resistivity (>8000 Ωm) and were thus confirmed by TPs which indicated mean glass composition of 87.2% among samples (up to 99% in some). However, high discrepancies in material resistivities increased the risk for introduction of... (More)
This study investigates the potential for Electrical Resistivity Tomography (ERT) to detect buried glass ‘hotspots’ in a glass waste dump based on results from an open glass dump investigated initially. This detection potential is vital for excavation and later use of buried materials as secondary resources. After ERT, test pits (TPs) were excavated around suspected glass hotspots and physico-chemical characterisation of the materials was done. Hotspots were successfully identified as regions of high resistivity (>8000 Ωm) and were thus confirmed by TPs which indicated mean glass composition of 87.2% among samples (up to 99% in some). However, high discrepancies in material resistivities increased the risk for introduction of artefacts, thus increasing the degree of uncertainty with depth, whereas similarities in resistivity between granite bedrock and crystal glass presented data misinterpretation risks. Nevertheless, suitable survey design, careful field procedures and caution exercised by basing data interpretations primarily on TP excavation observations generated good results particularly for near-surface materials, which is useful since glass waste dumps are inherently shallow. Thus, ERT could be a useful technique for obtaining more homogeneous excavated glass and other materials for use as secondary resources in metal extraction and other waste recycling techniques while eliminating complicated and often costly waste sorting needs.
(Less)
- author
- Mutafela, Richard Nasilele ; Lopez, Etzar Gomez LU ; Dahlin, Torleif LU ; Kaczala, Fabio ; Marques, Marcia ; Jani, Yahya and Hogland, William
- organization
- publishing date
- 2020-04-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Circular economy, Electrical resistivity tomography, Glass waste, Landfill mining, Secondary resources, Waste characterisation
- in
- Waste Management
- volume
- 106
- pages
- 13 pages
- publisher
- Elsevier
- external identifiers
-
- pmid:32240938
- scopus:85082613411
- ISSN
- 0956-053X
- DOI
- 10.1016/j.wasman.2020.03.027
- language
- English
- LU publication?
- yes
- id
- 396d4c78-357f-458c-95f7-fac2cec371e1
- date added to LUP
- 2020-04-17 14:45:36
- date last changed
- 2024-05-15 10:37:49
@article{396d4c78-357f-458c-95f7-fac2cec371e1,
abstract = {{<p>This study investigates the potential for Electrical Resistivity Tomography (ERT) to detect buried glass ‘hotspots’ in a glass waste dump based on results from an open glass dump investigated initially. This detection potential is vital for excavation and later use of buried materials as secondary resources. After ERT, test pits (TPs) were excavated around suspected glass hotspots and physico-chemical characterisation of the materials was done. Hotspots were successfully identified as regions of high resistivity (>8000 Ωm) and were thus confirmed by TPs which indicated mean glass composition of 87.2% among samples (up to 99% in some). However, high discrepancies in material resistivities increased the risk for introduction of artefacts, thus increasing the degree of uncertainty with depth, whereas similarities in resistivity between granite bedrock and crystal glass presented data misinterpretation risks. Nevertheless, suitable survey design, careful field procedures and caution exercised by basing data interpretations primarily on TP excavation observations generated good results particularly for near-surface materials, which is useful since glass waste dumps are inherently shallow. Thus, ERT could be a useful technique for obtaining more homogeneous excavated glass and other materials for use as secondary resources in metal extraction and other waste recycling techniques while eliminating complicated and often costly waste sorting needs.</p>}},
author = {{Mutafela, Richard Nasilele and Lopez, Etzar Gomez and Dahlin, Torleif and Kaczala, Fabio and Marques, Marcia and Jani, Yahya and Hogland, William}},
issn = {{0956-053X}},
keywords = {{Circular economy; Electrical resistivity tomography; Glass waste; Landfill mining; Secondary resources; Waste characterisation}},
language = {{eng}},
month = {{04}},
pages = {{213--225}},
publisher = {{Elsevier}},
series = {{Waste Management}},
title = {{Geophysical investigation of glass ‘hotspots’ in glass dumps as potential secondary raw material sources}},
url = {{https://lup.lub.lu.se/search/files/82514376/Mutafela_et_al_2020_Geophysical_investigation_of_glass_hotspots_in_glass_dumps_as_potential_secondary_raw_material_sources_Waste_Management_106_213_225.pdf}},
doi = {{10.1016/j.wasman.2020.03.027}},
volume = {{106}},
year = {{2020}},
}