Methane emissions from 3 different landfills in the Netherlands were estimated using a mobile Tuneable Diode Laser system (TDL). The methane concentration in the cross section of the plume is measured downwind of the source on a transect perpendicular to the wind direction. A Gaussian plume model was used to simulate the concentration levels at the transect. The emission from the source is calc...

Basically, the activity of the methane oxidizing bacteria is limited by the availability of oxygen in the landfill cover soil. Enforced by the use of fine-grained soils like silt, the surface tends to crust due to vertical erosion, blocking pores required for gas exchange. A column study was carried out to examine the impact of vegetation on improving the aeration of critical soil material and ...

The potential for natural attenuation of volatile organic compounds (VOCs) in landfill covers was investigated in soil microcosms incubated with methane and air, simulating the gas composition in landfill soil covers. Soil was sampled at Skellingsted Landfill at a location emitting methane. In total, 26 VOCs were investigated, including chlorinated methanes, ethanes, ethenes, fluorinated hydroc...

Selected heavy metals (HMs) including Cd, Cr, Cu, Ni, Pb and Zn initially released from a full-scale bioreactor landfill were monitored over the first 20 months of operation. At the initial landfill stage, the leachate exhibited high HMs release, high organic matter content (27000-43000gl(-1) of TOC) and low pH (5-6). By the fifth month of landfilling, the methanogenic stage had been establishe...

BACKGROUND The migratory patterns of animals are changing in response to global environmental change with many species forming resident populations in areas where they were once migratory. The white stork (Ciconia ciconia) was wholly migratory in Europe but recently guaranteed, year-round food from landfill sites has facilitated the establishment of resident populations in Iberia. In this study...

Within the project RECLAF (Resource Classification Framework for Old Landfills in Flanders) the resource recovery potential of approximately 2,000 historic landfills in Flanders is prospected. The research project’s goal is to systematically provide information for the future management of these former landfill sites, e.g. whether the sites are to be mined or not and under which conditions. The...

In a bioreactor landfill, waste biodegradation, generation of gas and leachate, two-phase flow mechanical deformation closely couple with each other. Recirculated leachate can accelerate biodegradation landfill gas. A significant occurs due to suction change, the increase in both pressure could affect slope stability decrease effective stress. this paper, full coupled hydro-mechanical-biodegrad...

This proposal is in response to item 13 of the FCSHWM request for proposals asking for research that examines the long-term treatment and disposal options for landfill leachate. Mature landfill leachates will require a complex sequence of biological, physical, and chemical treatment processes to reach discharge limits. It is likely that ammonia-nitrogen, humics, and xenobiotic compounds in thes...

Landfill leachate recirculation is applied to manage the landfill as a bioreactor enhance biogas production, limiting impact due greenhouse gas emissions and optimizing energy recovery from biogas. This study deals with geophysical monitoring of within waste pretreated landfill. For this aim, electrical resistivity tomography (ERT) was adopted, detecting main distribution moisture both through ...

The city of Astana, the capital of Kazakhstan, which has a population of 804,474, and has been experiencing rapid growth over the last 15 years, generates approximately 1.39 kg capita(-1) day(-1) of municipal solid waste (MSW). Nearly 700 tonnes of MSW are collected daily, of which 97% is disposed of at landfills. The newest landfill was built using modern technologies, including a landfill gas...