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Mary B, Sottani A, Boaga J, Camerin I, Deiana R, Cassiani G. Non-invasive investigations of closed landfills: An example in a karstic area. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167083. [PMID: 37730071 DOI: 10.1016/j.scitotenv.2023.167083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 09/22/2023]
Abstract
The monitoring of existing landfills is a pending environmental issue for the years to come. This monitoring is particularly challenging in the more and more common case of closed landfills, where direct investigation is difficult or impossible, calling for non-invasive methods, which in turn are stretched to maximizing their imaging capabilities in front of difficult logistical constraints, requiring novel and well-conceived scientific approaches. In this study we present a non-invasive approach designed and calibrated to identify the state of the subsoil underlying a closed urban waste landfill. In the presented case, two main questions had to be addressed: (a) whether large karstic cavities are present under the landfill, and (b) if any leachate leakage is present. A 3D Electrical Resistivity Tomography (ERT) configuration was used to solve the problem. The survey design has made use of forward model simulations, in order to verify whether the proposed approach was capable of imaging the possible large karstic cavities. This preliminary study showed the importance of choosing a suitable measurement protocol to recover the true position of the cavities. The analysis of the real field data did not show any anomaly compatible with the presence of large cavities, and thus, in comparison with the previous simulations, led to the conclusion that such cavities are not present. However, the results showed the presence of an electrically conductive anomaly, potentially be linked to leachate release. Direct investigations (drilling and sampling) confirmed the presence of fresh water in a silty sediment environment, both contributing towards the observed larger electrical conductivity, larger than the surrounding drier limestone bedrock. The presented general approach proved to be a valuable, generalizable, tool towards for the characterization and monitoring of closed landfills.
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Affiliation(s)
- Benjamin Mary
- Department of Geosciences, University of Padova, Padova, Italy.
| | | | - Jacopo Boaga
- Department of Geosciences, University of Padova, Padova, Italy; Interdepartmental Center for Cultural Heritage - CIBA - University of Padova, Padova, Italy.
| | | | - Rita Deiana
- Interdepartmental Center for Cultural Heritage - CIBA - University of Padova, Padova, Italy; Department of Cultural Heritage, University of Padova, Padova, Italy.
| | - Giorgio Cassiani
- Department of Geosciences, University of Padova, Padova, Italy; Interdepartmental Center for Cultural Heritage - CIBA - University of Padova, Padova, Italy.
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2
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Juarez MB, Mondelli G, Giacheti HL. An overview of in situ testing and geophysical methods to investigate municipal solid waste landfills. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:24779-24789. [PMID: 36648718 PMCID: PMC9843669 DOI: 10.1007/s11356-023-25203-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Municipal solid waste (MSW) management is challenging as a whole. Global waste generation is expected to continue to increase in the coming years, and landfills are currently the primary destination. Therefore, the stability of these structures must be carefully evaluated to prevent failures and associated health and pollution risks, which implies the determination of waste properties using more reliable approaches. This paper presents a scoping review of field data from MSW landfills and outlines suggestions for future work. Studies published in the past twenty years were selected following a systematic search process in databases. Aspects discussed include (1) strength parameters and soil behavior type from in situ testing, (2) elastic moduli from seismic wave propagation, and (3) moisture content from geoelectrical measurements. Although the values of geotechnical parameters have varied due to waste heterogeneity and applied methods, the trends observed with depth and age could be compared. Research opportunities involve the spatial analysis of mechanical properties at a given site, seismic response of landfills with high organic content and saturation degree, interpretation of long-term resistivity monitoring, and combination of electrical properties to assess the degradation stages within the waste mass.
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Affiliation(s)
- Mariana Barbosa Juarez
- Department of Civil and Environmental Engineering, São Paulo State University (UNESP), Bauru, SP, Brazil.
| | - Giulliana Mondelli
- Department of Civil and Environmental Engineering, São Paulo State University (UNESP), Bauru, SP, Brazil
| | - Heraldo Luiz Giacheti
- Department of Civil and Environmental Engineering, São Paulo State University (UNESP), Bauru, SP, Brazil
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3
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Delgado-Gonzalez L, Forquet N, Choubert JM, Boutin C, Moreau M, Moreau S, Clement R. Flow path monitoring by discontinuous time-lapse ERT: An application to survey relationships between secondary effluent infiltration and roots distribution. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 326:116839. [PMID: 36435132 DOI: 10.1016/j.jenvman.2022.116839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 11/02/2022] [Accepted: 11/18/2022] [Indexed: 06/16/2023]
Abstract
The infiltration of secondary treated effluent (STE) into the soil downstream of wastewater treatment plants is becoming increasingly common in a climate change context. In STE infiltration, STE is discharged onto the soil over a large surface allowing for a gradual infiltration of the water. This paper investigates a novel time-lapse electrical resistivity tomography strategy to evaluate the impact of STE infiltration on the water pathways of two planted loamy-soil trenches located in a Fluvisol region in southwestern France. The system has been monitored for 3 years using discontinuous monitoring of electrical resistivity tomography during four saline tracer tests. Results show that: 1) the new methodology has successfully highlighted the evolution of water pathways in the soil over time; 2) such evolution is in agreement with reeds root distribution in the trenches which seems to be affected by water quality i.e. sludge losses and TSS, for this study case. Indeed, for the infiltration trench receiving STE with lower pollution levels (2.2 mg TSS. L-1, 26 mg COD. L-1), the infiltration capacity is maintained over the years (4-6 mm h-1) and reed roots developed deeper in the soil. A sludge deposit present at the bottom of the second infiltration trench receiving higher pollution levels (7.2 mg TSS. L-1, 45 mg COD. L-1, plus episodic sludge release) could lead roots to develop close to the surface affecting the infiltration capacity which did not evolve over time. This work highlights the importance of long-term flow pathway monitoring in understanding the hydraulic behavior of infiltration surfaces submitted to STE.
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Affiliation(s)
| | - Nicolas Forquet
- INRAE, UR-REVERSAAL, 5 Rue de La Doua, CS 20244, 69625, Villeurbanne Cedex, France
| | - Jean-Marc Choubert
- INRAE, UR-REVERSAAL, 5 Rue de La Doua, CS 20244, 69625, Villeurbanne Cedex, France
| | - Catherine Boutin
- INRAE, UR-REVERSAAL, 5 Rue de La Doua, CS 20244, 69625, Villeurbanne Cedex, France
| | - Magali Moreau
- INRAE, UR-PROSE, 1 Rue Pierre Gilles de Gennes, 92160, Antony, France
| | - Sylvain Moreau
- INRAE, UR-PROSE, 1 Rue Pierre Gilles de Gennes, 92160, Antony, France
| | - Rémi Clement
- INRAE, UR-REVERSAAL, 5 Rue de La Doua, CS 20244, 69625, Villeurbanne Cedex, France
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Assef FM, Steiner MTA, Lima EPD. A review of clustering techniques for waste management. Heliyon 2022; 8:e08784. [PMID: 35118205 PMCID: PMC8792088 DOI: 10.1016/j.heliyon.2022.e08784] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/09/2021] [Accepted: 01/14/2022] [Indexed: 11/29/2022] Open
Abstract
A variety of problems related to waste management systems can be found in the literature, as they have become tougher to solve over the years. With this in mind, a report of the most influential research concerns in this field could help develop innovative works for solving waste management applications. Literature reviews appear in most introductions and discussion sections of research reports, case reports, and expert opinion papers. It was immediately observed that Cluster Analysis, a multivariate data mining technique, has been used in various applications for sustainability issues. For this reason, this paper shows the results of a Systematic Literature Review on Cluster Analysis techniques applied to waste management. This paper's primary goal is to detect what is happening with the applications and techniques in clustering techniques for waste management and, in this way, define possible gaps in this research field. The 61 analyzed papers were categorized into nine application types within the field of waste management (logistics/business; landfill research; theoretical/consequential; waste collection problems; location/selection; monitoring/decision support systems; leachate/water contamination; waste incineration/energy production and, waste forecast/waste production behavior). Following an analysis of their content, gaps were found related to exploring the complex situations in each problem. Instead of using general rules and constraints for their methodologies to solve real-world problems, they resorted to theoretical orientation solutions. Furthermore, suggestions from specialists in the field and more fitting constraints related to the data evaluated could make the works seem less theoretical and more visually applicable. A methodological approach focusing on algorithms and applications used by waste management researchers. Waste management problems can be categorized into nine types of applications. Waste collection problems are the most influential research in this niche of work. Heuristics algorithms are the most frequently used class of methods in the selected papers. The k-means algorithm is the most commonly used clustering technique in waste management applications.
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Affiliation(s)
- Fernanda Medeiros Assef
- Industrial and Systems Engineering Program, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
- Corresponding author.
| | - Maria Teresinha Arns Steiner
- Industrial and Systems Engineering Program, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
| | - Edson Pinheiro de Lima
- Industrial and Systems Engineering Program, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
- Industrial and Systems Engineering Department, Universidade Tecnológica Federal do Paraná, Brazil
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5
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Rabouli S, Serre M, Dubois V, Gance J, Henine H, Molle P, Truffert C, Delgado-Gonzalez L, Clément R. Spatialization of saturated hydraulic conductivity using the Bayesian Maximum Entropy method: Application to wastewater infiltration areas. WATER RESEARCH 2021; 204:117607. [PMID: 34536682 DOI: 10.1016/j.watres.2021.117607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/15/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
Wastewater treatment, a major issue at the European level, focuses on improving surface water and groundwater quality, preserving the receiving environment, and ensuring a sustainable use of water. Soil infiltration is increasingly practiced downstream of wastewater treatment plants, particularly in rural areas without surface water bodies, as is the use of soil as an additional buffer and treatment step. However, the design of infiltration areas on heterogeneous soils remains an extremely complex task due to the costly and time-consuming spatial measurement of saturated hydraulic conductivity (Ks). This article proposes integrating 2D electrical resistivity tomography and infiltration tests into a Bayesian Maximum Entropy method, yielding a vertical mapping of soil heterogeneities at a metric scale. This updated method will facilitate infiltration area design in a heterogeneous soil setting.
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Affiliation(s)
- Sara Rabouli
- INRAE, REVERSAAL, F-69626 Villeurbanne Cedex, France.
| | - Marc Serre
- University of North Carolina, Chapel Hill, NC, USA
| | - Vivien Dubois
- INRAE, REVERSAAL, F-69626 Villeurbanne Cedex, France
| | | | - Hocine Henine
- INRAE, UR HYCAR, 1 Rue Pierre Gilles de Gennes, 92160 Antony, France
| | - Pascal Molle
- INRAE, REVERSAAL, F-69626 Villeurbanne Cedex, France
| | | | | | - Rémi Clément
- INRAE, REVERSAAL, F-69626 Villeurbanne Cedex, France
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Lu SF, Feng SJ. Comprehensive overview of numerical modeling of coupled landfill processes. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 118:161-179. [PMID: 32892093 DOI: 10.1016/j.wasman.2020.08.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 06/16/2020] [Accepted: 08/13/2020] [Indexed: 06/11/2023]
Abstract
Landfilling is the primary method used for municipal solid waste (MSW) disposal. To design, optimize, and manage landfills with a life span of several decades, a deeper understanding of long-term MSW behaviors is necessary and worthwhile. These behaviors should be modeled using approaches that account for coupled processes so as to capture the evolutionary mechanisms that are mainly dominated by biochemical, mechanical, hydraulic, and thermal processes, as well as the complex interactions among them. Many mathematical models have been developed over the past three decades to address this issue. However, most of them only emphasize some of these processes, with only few models accounting for all the processes. In this review, we present a comprehensive overview of the mathematical and numerical formulations of this coupled problem. Each process occurring in landfills is interpreted in detail using different sub-models and the corresponding parameter values. Then, the existing coupled models for MSW are reviewed, and the challenges and perspectives related to the modeling of the long-term behaviors of MSW are highlighted. We conclude that more reliable constitutive formulations based not only on well-designed laboratory tests but also on field tests are necessary to improve the modeling of MSW behaviors in future.
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Affiliation(s)
- Shi-Feng Lu
- Department of Civil Engineering, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China(1); Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China(2)
| | - Shi-Jin Feng
- Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China.
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7
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Clement R, Fargier Y, Dubois V, Gance J, Gros E, Forquet N. OhmPi: An open source data logger for dedicated applications of electrical resistivity imaging at the small and laboratory scale. HARDWAREX 2020; 8:e00122. [PMID: 35498256 PMCID: PMC9041214 DOI: 10.1016/j.ohx.2020.e00122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 06/01/2020] [Accepted: 06/24/2020] [Indexed: 05/10/2023]
Abstract
The use of electrical resistivity tomography in laboratory or field experiments for environmental purposes has been increasing in recent years. The development of commercial devices has thus far focused on the quality of measurements and their robustness in all field cases. However, both their costs and lack of flexibility to adapt to specific applications have limited their prevalence in the environmental sector. This article presents the development of a low-cost, open hardware resistivity meter to provide the scientific community with a robust and flexible tool for small-scale experiments. Called OhmPi, this basic resistivity meter features current injection and measurement functions associated with a multiplexer that allows performing automatic measurements with up to 32 electrodes (at a cost of less than $500). The device was first tested using a soil-analog electrical circuit to verify the reliability and robustness of the measurements. Results show that OhmPi offers a wide range of resistance measurements, from 0.2 to 1000 O, for contact resistances between 100 and 5000 O. Measurements were then carried out on a small field experiment, in demonstrating good stability of the OhmPi measurements, as well as a strong correlation with the output of a commercial reference instrument.
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Affiliation(s)
- Rémi Clement
- INRAE, REVERSAAL, F-69626 Villeurbanne Cedex, France
- Corresponding author at: INRAE, REVERSAAL, 5 rue de la Doua, CS 20244, F-69626 Villeurbanne Cedex, France.
| | - Yannick Fargier
- GERS-RRO, Univ Gustave Eiffel, IFSTTAR, Univ Lyon, F-69675 Lyon, France
| | - Vivien Dubois
- INRAE, REVERSAAL, F-69626 Villeurbanne Cedex, France
| | | | - Emile Gros
- INRAE, REVERSAAL, F-69626 Villeurbanne Cedex, France
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Morita AKM, Pelinson NDS, Elis VR, Wendland E. Long-term geophysical monitoring of an abandoned dumpsite area in a Guarani Aquifer recharge zone. JOURNAL OF CONTAMINANT HYDROLOGY 2020; 230:103623. [PMID: 32067847 DOI: 10.1016/j.jconhyd.2020.103623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 11/03/2019] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
Even though attenuation processes in the subsurface are known to reduce the impacts of contaminant plumes, their importance is significantly dependent on geological and climatic characteristics, as well as on the leachate quality. The knowledge of attenuation processes linked to different geological formations is therefore fundamental in predicting the impacts of waste disposal areas. Geophysical methods are useful tools for assessing and delineating contaminant plumes, as well as their changes with time, which enables their lower-cost monitoring and association with geological and environmental properties. This paper shows the results of geophysical surveys conducted in the years of 1996, 2005 and 2018 in a waste disposal area located at a Guarani Aquifer recharge zone in Brazil. The objective of this study was to show the evolution of the contamination plume, as well as discuss some possible transport and attenuation processes that the contaminants may undergo in similar areas. Five geophysical sections surveyed within a time span of 20 years were compared, and the information was integrated with physicochemical data from monitoring wells. The results show a horizontal plume spreading, reaching about 200 m from the deposit and about 60 m of depth, 20 years after the ending of disposal activities. The measured resistivities in 2018 are similar to the ones found in 1996 and 2005 in the same surveyed areas, showing that a significant temporal attenuation did not occur. Moreover, samples collected close to anomaly zones and within a distance of 200 m from the deposit presented concentrations of some heavy metals above the screening values according to the Brazilian legislation, showing a metals mobility higher than previously expected, which can be possibly explained by the aquifer's acidic conditions. The estimated plume velocity was about 7 m/yr, a plume deepening was observed until about 50 m and changes in water flow direction and/or diffusion processes made the plume spread to areas previously regarded as upgradient. Therefore, the present paper shows that the rehabilitation of sites neighboring waste disposal sites (less than 200 m from it) did not seem to be feasible through natural attenuation in sandy soils and that the plume spreading is significant in this geological formation. Thus, abandoned disposal areas, constantly considered to be closed after the ending of disposal activities in developing countries, generate plumes which move silently and may reach areas of concern in the future.
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Affiliation(s)
- Alice Kimie Martins Morita
- São Carlos School of Engineering (EESC), University of São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP 13566-590, Brazil.
| | - Natalia de Souza Pelinson
- São Carlos School of Engineering (EESC), University of São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP 13566-590, Brazil
| | - Vagner Roberto Elis
- Institute of Astronomy, Geophysics,and Atmospheric Sciences, University of São Paulo, Rua do Matão 1226, São Paulo, SP 05508090, Brazil.
| | - Edson Wendland
- São Carlos School of Engineering (EESC), University of São Paulo, Avenida Trabalhador São Carlense 400, São Carlos, SP 13566-590, Brazil.
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Digan L, Horgue P, Debenest G, Dubos S, Pommier S, Paul E, Dumas C. An improved hydrodynamic model for percolation and drainage dynamics for household and agricultural waste beds. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 98:69-80. [PMID: 31437712 DOI: 10.1016/j.wasman.2019.07.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 07/17/2019] [Accepted: 07/19/2019] [Indexed: 06/10/2023]
Abstract
This study focuses on the hydrodynamic modelling of percolation and drainage cycles in the context of solid-state anaerobic digestion and fermentation (VFA platform) of household solid wastes (HSW) in leach bed reactors. Attention was given to the characterization of the water distribution and hydrodynamic properties of the beds. The experimental procedure enabled the measurement of water content in waste beds at different states of compaction during injection and drainage, and this for two types of HSW and for two other type of wastes. A numerical model, set up with experimental data from water content measurements, highlighted that a capillary-free dual-porosity model was not able to correctly reproduce all the hydrodynamic features and particularly the drainage dynamics. The model was improved by adding a reservoir water fraction to macroporosity which allowed to correctly simulate dynamics. This model, validated with data obtained from agricultural wastes, enabled to explain more precisely the water behaviour during percolation processes and these results should be useful for driving either solid-state anaerobic digestion or fermentation reactors. Indeed, this implies that the recirculation regime will impact the renewal of the immobile water fraction in macroporosity, inducing different concentration levels of fermentation products in the leachate.
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Affiliation(s)
- Laura Digan
- TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France
| | - Pierre Horgue
- INPT, UPS, IMFT (Institut de Mécanique des Fluides de Toulouse), Université de Toulouse, Allée Camille Soula, F-31400 Toulouse, France and CNRS, IMFT, F-31400 Toulouse, France
| | - Gérald Debenest
- INPT, UPS, IMFT (Institut de Mécanique des Fluides de Toulouse), Université de Toulouse, Allée Camille Soula, F-31400 Toulouse, France and CNRS, IMFT, F-31400 Toulouse, France
| | - Simon Dubos
- TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France
| | | | - Etienne Paul
- TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France
| | - Claire Dumas
- TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France.
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Muaaz-Us-Salam S, Cleall PJ, Harbottle MJ. The case for examining fluid flow in municipal solid waste at the pore-scale - A review. WASTE MANAGEMENT & RESEARCH : THE JOURNAL OF THE INTERNATIONAL SOLID WASTES AND PUBLIC CLEANSING ASSOCIATION, ISWA 2019; 37:315-332. [PMID: 30791834 DOI: 10.1177/0734242x19828120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this paper, we discuss recent efforts from the last 20 years to describe transport in municipal solid waste (MSW). We first discuss emerging themes in the field to draw the reader's attention to a series of significant challenges. We then examine contributions regarding the modelling of leachate flow to study transport via mechanistic and stochastic approaches, at a variety of scales. Since MSW is a multiphase, biogeochemically active porous medium, and with the aim of providing a picture of transport phenomena in a wider context, we then discuss a selection of studies on leachate flow incorporating some of the complex landfill processes (e.g. biodegradation and settlement). It is clear from the literature survey that our understanding of transport phenomena exhibited by landfilled waste is far from complete. Attempts to model transport have largely consisted of applying representative elementary-scale models (the smallest volume which can be considered representative of the entire waste mass). Due to our limited understanding of fluid flow through landfilled waste, and the influence of simultaneously occurring biogeomechanical processes within the waste mass, elementary-scale models have been unable to fully describe the flow behaviour of MSW. Pore-scale modelling and experimental studies have proven to be a promising approach to study fluid flow through complex porous media. Here, we suggest that pore-scale modelling and experimental work may provide valuable insights into transport phenomena exhibited by MSW, which could then be used to revise elementary-scale models for improved representation of field-scale problems.
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Falzone S, Robinson J, Slater L. Characterization and Monitoring of Porous Media with Electrical Imaging: A Review. Transp Porous Media 2018. [DOI: 10.1007/s11242-018-1203-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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12
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de Medeiros Engelmann P, Dos Santos VHJM, Moser LI, do Canto Bruzza E, Barbieri CB, Barela PS, de Moraes DP, Augustin AH, Goudinho FS, Melo CL, Ketzer JMM, Rodrigues LF. Environmental monitoring of water resources around a municipal landfill of the Rio Grande do Sul state, Brazil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:21398-21411. [PMID: 28744679 DOI: 10.1007/s11356-017-9725-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 07/06/2017] [Indexed: 06/07/2023]
Abstract
In Brazil, landfills are commonly used as a method for the final disposal of waste that is compliant with the legislation. This technique, however, presents a risk to surface water and groundwater resources, owing to the leakage of metals, anions, and organic compounds. The geochemical monitoring of water resources is therefore extremely important, since the leachate can compromise the quality and use of surface water and groundwater close to landfills. In this paper, the results of analyses of metals, anions, ammonia, and physicochemical parameters were used to identify possible contamination of surface water and groundwater in a landfill area. A statistical multivariate approach was used. The values found for alkali metals, nitrate, and chloride indicate contamination in the regional groundwater and, moreover, surface waters also show variation when compared to the other background points, mainly for ammonia. Thus, the results of this study evidence the landfill leachate influence on the quality of groundwater and surface water in the study area.
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Affiliation(s)
- Pâmela de Medeiros Engelmann
- Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681, Building 96J, Porto Alegre, 90619-900, Brazil
| | - Victor Hugo Jacks Mendes Dos Santos
- Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681, Building 96J, Porto Alegre, 90619-900, Brazil
| | - Letícia Isabela Moser
- Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681, Building 96J, Porto Alegre, 90619-900, Brazil
| | - Eduardo do Canto Bruzza
- Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681, Building 96J, Porto Alegre, 90619-900, Brazil
| | | | - Pâmela Susin Barela
- Institute of Chemistry, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, Brazil
| | - Diogo Pompéu de Moraes
- Institute of Chemistry, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, Brazil
| | - Adolpho Herbert Augustin
- Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681, Building 96J, Porto Alegre, 90619-900, Brazil
| | - Flávio Soares Goudinho
- Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681, Building 96J, Porto Alegre, 90619-900, Brazil
| | - Clarissa Lovato Melo
- Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681, Building 96J, Porto Alegre, 90619-900, Brazil
| | - João Marcelo Medina Ketzer
- Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681, Building 96J, Porto Alegre, 90619-900, Brazil
| | - Luiz Frederico Rodrigues
- Institute of Petroleum and Natural Resources, Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga, 6681, Building 96J, Porto Alegre, 90619-900, Brazil.
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Václavík V, Ondrašiková I, Dvorský T, Černochová K. Leachate from Municipal Waste Landfill and Its Natural Degradation-A Case Study of Zubří, Zlín Region. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13090873. [PMID: 27598181 PMCID: PMC5036706 DOI: 10.3390/ijerph13090873] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 08/05/2016] [Accepted: 08/24/2016] [Indexed: 11/17/2022]
Abstract
This work deals with the natural degradation of leachate from an old reclaimed landfill by means of a biological pond. Hamra is a municipal waste landfill with a limited formation of leachate, which has already been reclaimed. Leachate in this location is disposed of using natural biogeochemical method, and it is subsequently discharged into a surface stream. The main issue dealt with here is the long-term effectiveness of natural degradation of leachate and the limits of its use. The solutions of these fundamental questions took advantage of a database of analytical assessments collected during a long-term monitoring of the landfill site. The primary degradation trends and the long-term development have been revealed and described on the basis of these assessments. The main benefit of the biological pond is the dilution of the dominant contaminants, especially of inorganic character. In the case of ammonium ions, they show nitrification caused by their transition from the reduction into oxidizing environment. From a long term point of view, the disadvantage of natural degradation of leachate can be seen in the gradual reduction in efficiency due to the concentration of the substances or an undesired growth of water plants, which can be successfully eliminated, for example, by means of targeted aeration and by maintaining vegetation in the pond and its surroundings. The biological potential of the locality is very favorable and, despite its anthropogenic load, it creates a location with suitable living conditions for many water animals and plants. That is why it can be concluded that the efficiency of the natural biochemical cleaning elements can be considered as sufficient, taking into account the nature of the deposited waste, the quantity and quality of leachate, as well as the climate character of the locality.
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Affiliation(s)
- Vojtěch Václavík
- Institute of Environmental Engineering, Faculty of Mining and Geology, VSB-Technical University of Ostrava, 17. listopadu15, Ostrava 708 00, Czech Republic.
| | - Ivana Ondrašiková
- AZ GEO s.r.o., Ostrava, Masná 1493/8, Ostrava 702 00, Czech Republic.
| | - Tomáš Dvorský
- Institute of Environmental Engineering, Faculty of Mining and Geology, VSB-Technical University of Ostrava, 17. listopadu15, Ostrava 708 00, Czech Republic.
| | - Kateřina Černochová
- Institute of Environmental Engineering, Faculty of Mining and Geology, VSB-Technical University of Ostrava, 17. listopadu15, Ostrava 708 00, Czech Republic.
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