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Author Bäumler, Rupert ♦ Kögel-Knabner, Ingrid
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher American Society of Agronomy
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Social sciences ♦ Social problems & services; associations ♦ Social welfare problems & services ♦ Natural sciences & mathematics ♦ Chemistry & allied sciences ♦ Life sciences; biology ♦ Biochemistry ♦ Technology ♦ Medicine & health ♦ Personal health & safety ♦ Pharmacology and therapeutics ♦ Diseases ♦ Agriculture & related technologies ♦ Techniques, equipment & materials ♦ Manufacture for specific uses ♦ Precision instruments & other devices
Subject Domain (in MeSH) Inorganic Chemicals ♦ Macromolecular Substances ♦ Carbohydrates ♦ Lipids ♦ Amino Acids, Peptides, and Proteins ♦ Complex Mixtures ♦ Chemicals and Drugs ♦ Investigative Techniques ♦ Analytical, Diagnostic and Therapeutic Techniques and Equipment ♦ Environment and Public Health ♦ Health Care ♦ Geographic Locations ♦ Geographic Locations
Subject Keyword Discipline Environmental Health ♦ Refuse Disposal ♦ Waste Products ♦ Analysis ♦ Carbohydrates ♦ Carbon ♦ Germany ♦ Lignin ♦ Lipids ♦ Magnetic Resonance Spectroscopy ♦ Nitrogen ♦ Proteins ♦ Journal Article ♦ Research Support, Non-u.s. Gov't
Abstract Landfill sites are potential sources of hazardous emissions by degradation and transformation processes of waste organic matter. Its chemical composition and microbial degradability are key factors for risk management, after-care, and estimation of potential emissions. The aim of the study is to provide information about composition and extent of transformation of waste organic matter in four landfill sites in Bavaria, Southern Germany by means of (13)C NMR spectroscopy, acid-hydrolyzable carbohydrates, chloroform-methanol extractable lipids, acid-hydrolyzable proteins, and lignin compounds after CuO oxidation. Ten samples of about 20 to 25 yr, 15 to 20 yr, and 5 to 10 yr of deposition each were taken at 2 m depth intervals by grab drilling till 10-m depth. Increasing temperatures from about 15 degrees C at 2-m depth to >40 degrees C at 10-m depth are found at some of the sites, representing optimum conditions for mesophile methane bacteria. Moisture contents of 160 to 310 g kg(-1) (oven dry), however, provide limiting conditions for anaerobic biodecay. Spectroscopic and chemical variables generally indicate a low extent of biodegradation and transformation at all sites despite a considerable heterogeneity of the samples. Independent of the time and depth of deposition more than 50% of the carbohydrate fraction of the waste organic matter provide a high potential for methane emissions and on-site energy production. There was no significant accumulation of long-chain organic and aromatic compounds, and of lignin degradation products even after more than 25 yr of rotting indicating higher extent of decomposition or stabilization of the waste organic matter. Installation of seepage water cleaning and recirculation systems are recommended to increase suboptimal moisture contents with respect to microbial methanogenesis, energy production, and long-term stabilization of municipal solid waste.
Spatial Coverage Germany
Description Country affiliation: Germany
Author Affiliation: Bäumler R ( Technische Universität München, Department für Okologie, Am Hochanger 2, D-85350 Freising-Weihenstephan, Germany.
ISSN 00472425
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2008-01-01
Publisher Place United States
e-ISSN 15372537
Journal Journal of Environment Quality
Volume Number 37
Issue Number 1

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Source: WHO-Global Index Medicus