Underground Leachate Distribution Based on Electrical Resistivity in Piyungan Landfill, Bantul

Harjito, Harjito; Suntoro, Suntoro; Gunawan, Totok; Maskuri, M.

doi:10.22146/ijg.18315

Cited by 4 publications

(6 citation statements)

References 3 publications

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“…< 4.26 -< 8.5 Ω.m), suggesting that contamination migrates in several directions. Similar anomalous values were interpreted as plumes in groundwater by Harjito et al [62] 3-9 Ω.m near a Bantul waste dump in Indonesia, Bichet et al [28] refer between 5 -12 Ω.m at a landfill in Belfort (France) and Ugbor et al [25] 3.12 -8.7 Ω.m in the surrounding of the Onitsha waste dump in southeast Nigeria. To the southwest of the natural basin reception there is a subplume of contamination resulting from new depositions producing leachate that migrates to the southwest during the wet season and in all directions during the dry season (profile 4).…”

Section: Spatial Distribution Of Possible Leachate Plumes (2020-2021)supporting

confidence: 59%

Characterisation of the Dynamics of Leachate Contamination Plumes in the Surrounding of the Hulene - B Waste Dump, Maputo, Mozambique

Bernardo¹,

Candeias²,

Rocha³

2021

Preprint

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The contamination of areas around solid urban waste dumps is a global challenge for the maintenance of environmental quality in large urban centres in developing countries. This study applied geophysical methods (electrical resistivity) to identify leachate contamina-tion plumes in the subsoil and groundwater, as well as to describe their temporal (2020 and 2021) dynamics in the lithology and groundwater around the Hulene - B waste dump, Maputo, Mozambique. Geophysical methods (electrical resistivity) were applied to identify possible groundwater contamination plumes, their dynamics, mechanisms of their enrichment and dispersion. Eight 400 m electrical resistivity profiles were performed, four profiles in January 2020 and four profiles in May 2021, overlapped, and the data were inverted with RES2D software. The electrical resistivity models indicate an E - W move-ment of large contamination plumes that dilute superficially into the natural surface wa-ter receiving basin and groundwater, creating zones of resistive anomalies. The thickness of the plumes in the subsurface environment was shown to be extensive in summer for profiles 1a and 2b and we associate it with the higher leachate production and migration mechanisms, which are intense in the hot and rainy season. Profile 4b showed the prop-agation of anomalous surface and subsurface areas, which was associated with higher leachate production and migration process in the new deposition zone (west). The spatial distribution of contamination plumes at both stations reduced significantly as we moved further away from the waste deposit, revealing the attenuating effect of groundwater and lithological substrate (Profile 3 a, b, and fig.7).

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Section: Spatial Distribution Of Possible Leachate Plumes (2020-2021)supporting

confidence: 59%

Characterisation of the Dynamics of Leachate Contamination Plumes in the Surrounding of the Hulene - B Waste Dump, Maputo, Mozambique

Bernardo¹,

Candeias²,

Rocha³

2021

Preprint

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“…At depth, in both profiles, the large mass of waste, <30.94 Ω•m (a) and <20.74 Ω•m (b), gains successive moisture in (a), establishing an extensive area of leachate production <24.5 Ω•m (a), whereas in (b), it is confined (<16.8 Ω•m). These differences are the result of the variation in precipitation and temperature in the two seasons studied, which are responsible for the variation in waste mass decomposition, production, and migration of leachate [54,55]. Profile 3, with an S-N orientation northwest of the dump (Figure 5).…”

Section: Geophysical Studies-electrical Resistivitymentioning

confidence: 99%

Characterization of the Dynamics of Leachate Contamination Plumes in the Surroundings of the Hulene-B Waste Dump in Maputo, Mozambique

2022

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The contamination of areas around solid urban waste dumps is a global challenge for the maintenance of environmental quality in large urban centres in developing countries. This study applied a geophysical method (electrical resistivity) to identify leachate contamination plumes in the subsoil and groundwater, as well as to describe their temporal dynamics (2020 and 2021) in the surroundings of the Hulene-B waste dump, Maputo, Mozambique. Eight 400 m electrical resistivity profiles were performed, four profiles in January 2020 and four profiles in May 2021 overlapped, and the data were inverted with RES2D software. The electrical resistivity models predominantly indicate an E-W movement of large contamination plumes that are successively diluted with saturated media and groundwater, creating zones of less resistive anomalies (<4.2–< 8.5 Ω·m) possibly contaminated at the two analysed seasons, between 2020–2021. The thickness of the contamination plumes was higher in summer (2020) for profiles 1 and 2, and we associate it with the production and migration mechanisms of leachate that are intense in the hot and rainy season. Southwest of the dump, profile 4b showed the propagation of anomalous areas on the surface and at depth, which are associated with the production of leachate resulting from the continuous decomposition of waste that is continuously deposited in a new area southwest of the dump, thus generating a slow and continuous migration of leachate at depth, mainly in winter (2021). The spatial distribution of contamination plumes during both seasons was reduced significantly farther away from the waste deposit, revealing the attenuating effect of groundwater and lithological substrate (Profile 3).

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“…The majority of environmental issues for landfill site selection exists in this parameter. Numerous reports of groundwater contamination in the landfill lie in shallow groundwater aquifers [15][16][17][18]. Groundwater in Pitay generally exists in alluvial and low hill land units [39] (Fig.…”

Section: Groundwater Depthmentioning

confidence: 99%

“…Methods on determining landfill sites have been excessively discussed [9][10][11][12][13], nonetheless, major issues concerning environmental degradation in Indonesia's landfill sites are still widely reported [14][15][16][17][18]. Most of these issues relate to groundwater contamination or are subject to geological principles.…”

Section: Introductionmentioning

confidence: 99%

Environmental geology assessment on the regional Pitay landfill site: a case study in Kupang, Indonesia

Titu-Eki

Kotta

2021

SN Appl. Sci.

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The Provincial Government of East Nusa Tenggara of Eastern Indonesia has intended to construct a new regional landfill site in Pitay–Kupang, which would accommodate municipal waste of two cities. Considering that environmental degradation in landfill sites has been a substantial issue for many developing cities in Indonesia, this study evaluates the pre-determined site on a local scale based on environmental geology parameters. It employs a conventional Geographical Information System based—Multi-Criteria Decision Analysis (GIS-MCDA) method which is based on the analysis of regional criterion, assessed by expressing values on each parameter presented on thematic maps and overlaid altogether as a screening process, and the exclusion criterion analysis, which sets a buffer zone to filter out irrelevant locations. The regional criterion parameters are: Lithology, groundwater depth, slope gradient and rainfall intensity, whilst the exclusion criterion parameters are: Distance from rivers and lakes, shorelines, settlements, main roads, airports and protected areas, distance from potential geological hazards such as fault zones, floods and mass movements, and distance from any geological potential which may be developed in the future. The biggest area reduction for suitable landfill site candidate is lithology, correlating with groundwater depths, and distance from rivers. Here we identified four potential sites located west and centre of Pitay, situated on Bobonaro scaly clay lithology unit, arguably possessing no groundwater with a slope gradient of 0–20%, rainfall intensity below 1000 mm, and is distant from any potential hazards, promising geological resources and other unfavorable criteria relating to environmental degradation.

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Underground Leachate Distribution Based on Electrical Resistivity in Piyungan Landfill, Bantul

Cited by 4 publications

References 3 publications

Characterisation of the Dynamics of Leachate Contamination Plumes in the Surrounding of the Hulene - B Waste Dump, Maputo, Mozambique

Characterisation of the Dynamics of Leachate Contamination Plumes in the Surrounding of the Hulene - B Waste Dump, Maputo, Mozambique

Characterization of the Dynamics of Leachate Contamination Plumes in the Surroundings of the Hulene-B Waste Dump in Maputo, Mozambique

Environmental geology assessment on the regional Pitay landfill site: a case study in Kupang, Indonesia

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