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  • Keyword = ’homeland security’ AND 'landfill' NOT (presentation OR poster).
Records 1 to 25 of 32

2023
A Critical Review of Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS) Landfill Disposal in the United States
(JOURNAL) [Published : Dec 20, 2023]
Landfills manage materials containing per- and polyfluoroalkyl substances (PFAS) from municipal solid waste (MSW) and other waste streams. This manuscript critically reviews state and federal initiatives and peer-reviewed literature to define best practices for managing these was...
Assessing moisture contributions from precipitation, waste, and leachate for active municipal solid waste landfills
(JOURNAL) [Published : Oct 15, 2023]
Weather, waste, and leachate data were used to perform a water balance and estimate the contributions of three water sources (infiltration, incoming waste, and leachate recycling) to active municipal solid waste (MSW) landfills in Ohio, USA. Hourly precipitation and ET values wer...
Assessment of Municipal Solid-Waste Landfill Liner Performance
(JOURNAL) [Published : Sep 01, 2023]
The leachate collection system (LCS) and leak detection system (LDS) flow rate data from 204 cells (or a combination of cells) at 54 municipal solid waste landfills (located in seven US states) with double-liner systems were analyzed to assess the performance of the primary liner...
Dataset of leachate volumes and surface areas for municipal solid waste (MSW) landfills in Ohio, USA from 1988-2020
(JOURNAL) [Published : Apr 01, 2023]
This data brief presents leachate disposal and management data for 43 active or closed municipal solid waste (MSW) landfills and planar surface areas for 40 of those landfills in Ohio, USA. Data were extracted from publicly available Annual Operational Reports from the Ohio Envir...
Effects of Landfill Food Waste Diversion: a Focus on Microbial Populations and Methane Generation
(JOURNAL) [Published : Oct 01, 2023]
The early stages of municipal solid waste degradation in landfills are complex harmonies of physical, biological, and chemical interactions that all work in concert to degrade trash into smaller and more stable materials. While many approaches have been taken to understand parts ...
Evaluation of Per- and Polyfluoroalkyl Substances (PFAS) in Leachate, Gas Condensate, Stormwater and Groundwater at Landfills
(JOURNAL) [Published : Mar 01, 2023]
Per- and polyfluoroalkyl substances (PFAS), found in many consumer products, are disposed in landfills at the end of their service lives. To identify landfill reservoirs that should be prioritized for treatment, this study aimed to evaluate PFAS levels in different aqueous sample...
Isothermal Dual-Phase Flow Modeling to Assess the Impact of Gas Collection on Geotechnical and Hydraulic Performance of Landfills
(JOURNAL) [Published : Aug 01, 2023]
Liquid addition to landfilled Municipal Solid Waste (MSW) is a practice employed to accelerate the biodegradation of the organic fraction of MSW and ensuing gas generation.  Pore landfill gas (LFG) and leachate pressure from the added moisture and enhanced gas generation are...
Leachate indicators of an elevated temperature landfill
(JOURNAL) [Published : Nov 01, 2023]
Elevated temperature landfills (ETLFs) are municipal solid waste (MSW) landfills that have been impacted by subsurface exothermic reactions (SERs) and display unusual gas and leachate composition. Leachate quantity and quality data were analyzed to identify indicators of a SER. A...
Literature-Derived Hydraulic Properties of Waste Materials for Use in Hydrologic Evaluation of Landfill Performance (HELP) Model
(PUBLISHED REPORT) [Published : Oct 01, 2023]
The Hydrologic Evaluation of Landfill Performance (HELP) model uses waste-specific properties such as hydraulic conductivity, porosity, wilting point, and field capacity for modeling vertical percolation of leachate through the deposited waste and cover layers to estimate the lea...
Per- and Polyfluoroalkyl Substances (PFAS) Distribution in Landfill Gas Collection Systems: leachate and gas condensate partitioning
(JOURNAL) [Published : Apr 15, 2023]
While per- and polyfluoroalkyl substances (PFAS) have been reported extensively in landfill leachate, discrete sources of leachate from within MSW landfills are not as well understood. Samples of gas condensate (GC) – a liquid formed when water vapor in landfill gas condenses – a...
Relationships between Per- and Polyfluoroalkyl Substances (PFAS) and Physical-Chemical Parameters in Aqueous Landfill Samples
(JOURNAL) [Published : Jul 03, 2023]
Investigating expected levels of per- and polyfluoroalkyl substances (PFAS)  at landfills is often confounded by variable chemistries present with different aqueous sample types.   The objective of the current study was to evaluate relationships between the physical-chemical prop...
Understanding Landfill Gas Behavior at Elevated Temperature Landfills
(JOURNAL) [Published : Jun 15, 2023]
Landfill gas (LFG) extraction wellhead data were compared to understand the range of observations due to unique conditions at five elevated temperature landfills (ETLFs) in the US. Correlations of CH4 and CO2 show distinct compositional indicators for 1. typical operation, 2. sub...
2022
Beneficial Use Options for Closed MSW Landfills
(PUBLISHED REPORT) [Published : Sep 01, 2022]
The main objective of this study is to function as a reference source that landfill owners and other stakeholders can use to evaluate potential beneficial use applications that can be undertaken after a landfill has been closed. This report focuses solely on MSW landfills and doe...
Concentrations of perfluoroalkyl and polyfluoroalkyl substances before and after full-scale landfill leachate treatment
(JOURNAL) [Published : Nov 01, 2022]
Many consumer and industrial products containing per- and polyfluoroalkyl substances (PFAS) are disposed of in landfills at the end of their usage, with PFAS in these products transferred into landfill leachates. On-site leachate treatment is one possible method to remove PFAS in...
Municipal solid waste incineration (MSWI) ash co-disposal: Influence on per- and polyfluoroalkyl substances (PFAS) concentration in landfill leachate
(JOURNAL) [Published : May 01, 2022]
To explore the contribution of municipal solid waste incineration (MSWI) ash to PFAS in landfills, leachate was collected from four landfills disposing of municipal solid waste incineration (MSWI) ash, either as a sole waste stream or co-disposed with other unburned materials (se...
Puerto Rico Municipal Landfill Leachate Quality Characterization
(PUBLISHED REPORT) [Published : May 01, 2022]
In this project, the physical and chemical properties of leachate from six landfills from different ecozones in Puerto Rico were analyzed during seven sampling events. Samples were obtained from leachate collection systems when available and from leachate storage ponds, seepage a...
When Does a Municipal Solid Waste Landfill become an Elevated Temperature Landfill (ETLF)?
(COMMUNICATION PRODUCT) [Published : Jan 03, 2022]
Analysis of existing landfill data. Specifically national characterization of landfill leachate, tons, and gas data from state regulators (Region 5) to detect or indicate elevated temperature landfills.
2021
From Waste Collection Vehicles to Landfills: Indication of Per- and Polyfluoroalkyl Substance (PFAS) Transformation
(JOURNAL) [Published : Jan 12, 2021]
Wastes produced daily from households and businesses contain a diverse and significant amount of per- and polyfluoroalkyl substances (PFAS) and these compounds may be transformed during transport and decomposition within landfills. Fresh vehicle leachates, from residential and co...
Greenhouse gas reporting data improves understanding of regional climate impact on landfill methane production and collection
(JOURNAL) [Published : Feb 26, 2021]
Closed landfills provide the best opportunity to analyze landfill methane production because gas collection efficiency is at its highest. In this paper, 5-8 years of annual methane collection data from 114 closed landfills located in 29 states of the contiguous United States were...
State of the Practice of Onsite Leachate Treatment at Municipal Solid Waste Landfills
(PUBLISHED REPORT) [Published : Oct 01, 2021]
Wastewater generated from solid waste, known as leachate, is one of the major environmental and human health risks posed by landfills. Management of leachate represents one of the major costs and operational challenges landfill owners face. The majority of landfills in non-arid a...
2020
Hydrologic Evaluation of Landfill Performance: HELP 4.0 User Manual
(DATA/SOFTWARE) [Published : Jan 31, 2020]
The Hydrologic Evaluation of Landfill Performance (HELP) model was developed by EPA’s Office of Research and Development in the 1990’s. The software is used by landfill designers and permit writers to calculate the head on the liner and to estimates water balances for landfills ...
Technical Considerations for Evaluating the Environmental Emissions from RCRA Subtitle D Landfills Beyond the 30-Year Post-Closure Care Period
(PUBLISHED REPORT) [Published : Jul 31, 2020]
The analyses provided in this report are intended to be relevant to state environmental agencies, MSWLF owners/operators, community decision-makers, and other stakeholders interested in understanding approaches for assessing the HHE impacts of modification or termination of MSWLF...
2018
Viral Persistence in Landfill Leachate Report
(PUBLISHED REPORT) [Published : Sep 24, 2018]
A report on experiments looking at persistence of viruses in landfill leachate.
2017
Evaluation of Persistence of Viruses in Landfill Leachate
(PUBLISHED REPORT) [Published : Mar 02, 2017]
Report
2016