Variability of leachate quality and polluting potentials in light of leachate pollution index (LPI) – A global perspective

Abunama, Taher; Moodley, Tyrone; Abualqumboz, Motasem S.; Kumari, Sheena; Bux, Faizal

doi:10.1016/j.chemosphere.2021.131119

Cited by 39 publications

(15 citation statements)

References 68 publications

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“…An assessment of water aggressiveness based on the estimation of saturation indices is also a useful method for identifying the groundwater contamination around landfills [56]. To assess the status of groundwater near the landfill, the leachate pollution index (LPI) (a mathematical equation that yields a single aggregated value of multiple physicochemical and biological leachate concentrations in a landfill) [57] or modifications of this method-revised leachate pollution index r-LPI [58] or m-LPI [59]-can be used. However, this conventional approach may not be effective in environments where the background levels of chemical indicators are already high such as wetland areas, sites with contamination that pre-dates the landfill, or sites contaminated with constituents originating from a source other than the landfill.…”

Section: Groundwater Contaminationmentioning

confidence: 99%

Carbon and Sulfur Isotope Methods for Tracing Groundwater Contamination: A Review of Sustainable Utilization in Reclaimed Municipal Landfill Areas

Porowska

2024

Sustainability

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Reclaimed landfill areas are excluded from various development options including construction, while contaminated zones around such places have no such restrictions. The successful reclamation of landfills means that the old landfill visually fits in well with its surroundings, but soil and water contamination problems remain valid. Former landfills were built without properly preparing the land, which resulted in the migration of contaminants in groundwater for a long period after these landfills were closed, further resulting in the limited use of such areas, at least for some purposes. Due to the development of cities, landfills formerly located in suburbs are becoming a part of these cities. In order to optimally and safely use these spaces, knowledge regarding the quality of the soil and water environment is necessary. This article presents methodological considerations regarding the use of carbon and sulfur isotope methods to assess groundwater contamination around former municipal waste landfills, especially reclaimed municipal landfills. It has been shown that natural groundwater is characterized by low values of both δ13CDIC and δ34S (δ13CDIC from −20 to −10‰ and δ34S at approximately −5‰), whereas leachate-contaminated groundwater is characterized by high values of both parameters (δ13CDIC from −10 to + 5‰ and δ34S from +5 to +20‰). The aim of this article is to demonstrate that carbon and sulfur isotope methods extended via SWOT analysis are universal and reliable methods for assessing the migration of pollutants, thus facilitating decisions regarding management.

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Section: Groundwater Contaminationmentioning

confidence: 99%

Carbon and Sulfur Isotope Methods for Tracing Groundwater Contamination: A Review of Sustainable Utilization in Reclaimed Municipal Landfill Areas

Porowska

2024

Sustainability

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“…The heavy metals included in r-LPI are Arsenic, Chromium, lead, and mercury. Heavy metals pose a significant threat to the environment and human health since they are extremely toxic, carcinogenic, and do not degrade (Abunama et al 2021;Hussein et al 2021). Thus, in the r-LPI, heavy metals obtained moderate weights.…”

Section: R-lpi Case Studymentioning

confidence: 99%

Revised Leachate Pollution Index (r-LPI): A Tool to Quantify Pollution Potential of Landfill Leachate

Kumar

Alappat

Bisht

2022

Preprint

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The leachate pollution index (LPI), a technique to quantify the contamination potential of landfill leachate, was developed in 2003. Since then, numerous factors have challenged the relevance of LPI, including advancements in technology, the long-term reliability of these indicators, the incidence of emerging contaminants, and the LPI’s efficacy. As a result, using LPI as a benchmark can lead to misinterpretation of the magnitude of leachate Pollution. To mitigate this, a revised leachate pollution index (r-LPI) was developed, which is more precise and robust in assessing the Pollution potential of landfill leachate. This article presents a comprehensive account of the development of r-LPI. The r-LPI was developed by incorporating fuzzy technique with a multi-criteria decision-making technique (MCDM), wherein the inputs from 60 experts in the field of the environment, specifically solid waste management, were acquired at different stages during its development. The fuzzy Delphi method (FDM) was used to select the parameters. The fuzzy analytic hierarchy process (FAHP) was used to compute the relative weights of the parameters and sub-index curves were used for normalization of the parameters. As an application, the LPI and the r-LPI of the Bhalswa, Okhla, and Ghazipur landfills were calculated. The results indicate that r-LPI provides a more comprehensive prediction of leachate Pollution than the LPI.

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“…Generally, the major sources of heavy metals in SW are batteries, consumer electronics, ceramic products, light bulbs, house dust and paint chips, lead foils such as used for wine bottle closures, as well as plastics and used motor oils, in addition to some inks and glass material (Abunama et al, 2021). Industrial activities-power plants, mining activities, metal-smelting industry, and chemical plants-are also pivotal sources of heavy metal pollution (Du et al, 2015;Zheng et al, 2010).…”

Section: Heavy Metals In Leachatementioning

confidence: 99%

Characteristics of leachate from refuse transfer stations in rural China

Xiang

Cheng

Liu

et al. 2022

Environ Sci Pollut Res

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The properties of leachate from refuse transfer stations (RTSs) in rural China was inde nite. In this study, a total of 14 leachate samples from RTSs in nine provinces of China were characterized for their pH, electric conductivity, chromaticity, concentration of organic substances, nitrogen distribution, volatile organic compounds (VOCs), organic phosphorous pesticide, and heavy metals. The structural composition of chromophoric dissolved organic matter (CDOM) was also determined. To evaluate the leachate pollution potential in this study, a leachate pollution index (LPI) was derived and used. Chromium (Cr) was the most polluting heavy metal present in rural leachate. Ethanol and ethyl acetate were the most frequently detected VOCs at high concentrations. Three-dimensional uorescence excitation-emission matrix spectra was used to characterize the CDOM. Three components, tryptophan (C 1 ), tyrosine-like (C 2 ), and humic and fulvic acid-like (C 3 ) substances were identi ed from all 14 samples. Tryptophan was the major component of CDOM and present in 45.7% of the samples by calculating the uorescence intensity percentage, on average. Pearson correlations revealed that the uorescence intensity of C 1 and C 3 was strongly related to soluble chemical oxygen demand and dissolved oxygen carbon, while C 2 had signi cant positive correlations with ammonia nitrogen and total phosphorus of the solid waste. This study provided detailed data and ndings that could serve as a preliminary basis for broadening options for the treatment and management of leachate from rural RTSs in China.

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Variability of leachate quality and polluting potentials in light of leachate pollution index (LPI) – A global perspective

Cited by 39 publications

References 68 publications

Carbon and Sulfur Isotope Methods for Tracing Groundwater Contamination: A Review of Sustainable Utilization in Reclaimed Municipal Landfill Areas

Carbon and Sulfur Isotope Methods for Tracing Groundwater Contamination: A Review of Sustainable Utilization in Reclaimed Municipal Landfill Areas

Revised Leachate Pollution Index (r-LPI): A Tool to Quantify Pollution Potential of Landfill Leachate

Characteristics of leachate from refuse transfer stations in rural China

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