Modeling the final phase of landfill gas generation from long-term observations |
| |
Authors: | Johannes Tintner Manfred Kühleitner Erwin Binner Norbert Brunner Ena Smidt |
| |
Institution: | (1) Department of Water, Atmosphere and Environment, Institute of Waste Management, University of Natural Resources and Life Sciences, Vienna, Austria;(2) Department of Integrative Biology, Institute of Mathematics, University of Natural Resources and Life Sciences , Vienna, Austria |
| |
Abstract: | For waste management, methane emissions from landfills and their effect on climate change are of serious concern. Current
models for biogas generation that focus on the economic use of the landfill gas are usually based on first order chemical
reactions (exponential decay), underestimating the long-term emissions of landfills. The presented study concentrated on the
curve fitting and the quantification of the gas generation during the final degradation phase under optimal anaerobic conditions.
For this purpose the long-term gas generation (240–1,830 days) of different mechanically biologically treated (MBT) waste
materials was measured. In this study the late gas generation was modeled by a log–normal distribution curve to gather the
maximum gas generation potential. According to the log–normal model the observed gas sum curve leads to higher values than
commonly used exponential decay models. The prediction of the final phase of landfill gas generation by a fitting model provides
a basis for CO2 balances in waste management and some information to which extent landfills serve as carbon sink. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|