liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Mono- and diesters of o-phthalic acid esters in leachates from young landfills
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
Linköping University, The Tema Institute, Department of Water and Environmental Studies. Linköping University, Faculty of Arts and Sciences.
(English)Manuscript (preprint) (Other academic)
Abstract [en]

Phthalic acid diesters are additives in a variety of materials that can end up in landfills. ln a previous laboratory landfill simulation study, it was fouod that degradation intermediates such as phthalic acid monoesters and phthalic acid accumulate during the change from acidic to methanogenic conditions in municipal solid waste. In the present investigation, leachates from a series of fullscale youog landfill cells were analysed over time for dimethyl, diethyl, dibutyl, butylbenzyl, and di(2-ethylheliyl) phthalate (respectively designated DMP, DEP, DBP, BBP, and DEHP), and their corresponding monoesters monomethyl, monoethyl, monobutyl, monobenzyl, and mono(2 ethylhexyl) phthalate (MMP, MEP, MbutP, MbenzP, and MEHP, respectively), as well as ophthalic acid. One landfill cell was created in each of three consecutive years by deposition of the same type of waste in July and August. The pH, volatile fatty acids (VF As), and total orgaulc carbon (TOC) were measured to characterise development of the degradation phases in three landfill cells, which revealed early acidogenic to initial methanogenic stages. Analysis of the phthalate compounds showed that levels of the degradation products were below the detection limit in the acidogenic leachates but exceeded concentrations of their corresponding diesters in leachates from cells in the initial methanogenic phase. Maximmn and average concentrations of phthalic acid were 50 and 23 mg/L, respectively, and the corresponding values for the other phthalates were 430 and 27 µg/L. The concentrations of all phthalates decreased during the evolution of stable methanogenic conditions. The results were in aggrement with the landfill simulation reactor study.

National Category
Social Sciences Interdisciplinary
Identifiers
URN: urn:nbn:se:liu:diva-80182OAI: oai:DiVA.org:liu-80182DiVA: diva2:546057
Available from: 2012-08-22 Created: 2012-08-22 Last updated: 2012-08-22Bibliographically approved
In thesis
1. Phthalates in landfill leachates: a signature of their degradation: Analytical aspects & toxicological considerations
Open this publication in new window or tab >>Phthalates in landfill leachates: a signature of their degradation: Analytical aspects & toxicological considerations
2003 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Phthalic acid diesters comprise a large group of organic compounds that are used to manufacture a variety of products all over the world, and this has raised concerns about the fate of these compounds in the environment. The diester-containing products often end up in landfills, where they are degraded by various micro-organisms, which gives rise to transient intermediates such as phthalic acid monoesters and ortho-phthalic acid. These degradation products escape detection when applying the analytical protocols used to investigate the well-elucidated diesters, hence other methods are needed.

In the present work, the temporal pattern of degradation was scrutinised by studying leachates from both laboratory-scale Iandfill simulation reactors and newly established fullscale landfill cells. Leachate samples from a transect downstream of a landfill were also examined to highlight possible groundwater contamination from unlined landfills. In addition, extraction techniques were developed for simultaneous detection of diesters, monoesters of o-phthalic acid, and o-phthalic acid itself.

The degradation products of phthalate diesters (i.e. the monoesters and phthalic acid) were found in the landfill leachates, which demonstrates proves that phthalic acid diesters are degraded/transformed in situ in landfills. The monoesters and phthalic acid may accumulate in leachates during certain parts of landfill degradation development, for example, during establishment of the methanogenic micro-flora. The phthalates leached from landfills are potential groundwater contaminants, whereas breakdown of the diesters and monoesters was observed in the studied Iandfill plume. The monoesters and phthalic acid could be detected by proper acidification of the samples and derivatization of the extracts, followed by gas chromatography and mass spectrometry. Acute toxicity tests showed that the monoesters were generally less toxic than the corresponding diesters, and that phthalic acid was the least toxic. These results suggest that degradation of the diesters to monoesters and phthalic acidwill reduce the risk for acute toxic effects on the environment.

Place, publisher, year, edition, pages
Linköping: Linköpings universitet, 2003. 66 p.
Series
Linköping Studies in Arts and Science, ISSN 0282-9800 ; 268
National Category
Social Sciences Interdisciplinary
Identifiers
urn:nbn:se:liu:diva-29573 (URN)14948 (Local ID)91-7373-588-4 (ISBN)14948 (Archive number)14948 (OAI)
Public defence
2003-01-31, Sal Elysion, Hus-T, Universitetssjukhuset, Linköping, 10:00 (Swedish)
Supervisors
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2014-09-01Bibliographically approved

Open Access in DiVA

No full text

Authority records BETA

Jonsson, SusanneEjlertsson, JörgemSvensson, Bo H.

Search in DiVA

By author/editor
Jonsson, SusanneEjlertsson, JörgemSvensson, Bo H.
By organisation
Department of Water and Environmental StudiesFaculty of Arts and Sciences
Social Sciences Interdisciplinary

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 32 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf