Document Detail

Structural characterization of organic intermediates arising from xylenol degradation by laboratory-scale constructed wetlands.
MedLine Citation:
PMID:  24393564     Owner:  NLM     Status:  Publisher    
A mixture of xylenols (2,6-, 3,4-, 3,5-) was subjected to laboratory-scale constructed wetland treatment using helophytes. Conversion efficiencies under aerobic conditions ranged from 89% to 94%; the corresponding numbers under anaerobic conditions were lower. The studies were focused on the identification of stable organic intermediates. Identification was performed by a combination of GC/MS analysis and pre-chromatographic derivatization of the lyophilizates. In addition to common intermediates including citraconate, succinate and dimethyl benzenediols, an array of α- and β-ketoadipic acid carboxylates could be identified. The ketoadipic acid carboxylates have not been known to be formed in bioremediation of phenols including xylenols so far. Mechanisms for the formation of ketoadipic acid carboxylates are proposed. Chemotaxonomic considerations using diagnostic fatty acids provided mounting evidence that organic matter originating from plants prevailed over bacterial organic matter. Biomarkers indicated a virtual absence of fungi and algae.
J Poerschmann; L Schultze-Nobre
Related Documents :
23002234 - A common mechanism of inhibition of the mycobacterium tuberculosis mycolic acid biosynt...
19727504 - Deliquescence behaviour and crystallisation of ternary ammonium sulfate/dicarboxylic ac...
18961334 - Dichloramine-t as a new oxidimetric titrant in non-aqueous and partially aqueous media-...
24481664 - An investigation of the causes of cocrystal dissociation at high humidity.
19153974 - Pseudo-bridging silanols as versatile brønsted acid sites of amorphous aluminosilicate...
10970044 - Contents of sulfur amino acids, and cystathionine beta-synthase and gamma-lyase activit...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-1-4
Journal Detail:
Title:  Chemosphere     Volume:  -     ISSN:  1879-1298     ISO Abbreviation:  Chemosphere     Publication Date:  2014 Jan 
Date Detail:
Created Date:  2014-1-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2013 Elsevier Ltd. All rights reserved.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Pyrolytic temperatures impact lead sorption mechanisms by bagasse biochars.
Next Document:  Use of stable isotope probing to assess the fate of emerging contaminants degraded by white-rot fung...