Document Detail

Influence of the addition of sulphate and ferric ions in a methanogenic anaerobic packed-bed reactor treating gasoline-contaminated water.
MedLine Citation:
PMID:  16939094     Owner:  NLM     Status:  MEDLINE    
Benzene, toluene and xylene (BTX) are relatively soluble aromatic compounds of gasoline. Gasoline storage tank leakages generally lead to an extensive contamination of groundwater. In the natural environment for instance, these compounds might be biodegraded under a variety of reducing potentials. The objective of this work was to examine the influence of the addition of sulphate and Fe(OH)3 in a methanogenic horizontal-flow anaerobic immobilized-biomass reactor treating gasoline-contaminated water. Three different conditions were evaluated: methanogenic, sulphidogenic and sulphidogenic with the addition of ferric ions. Methanogenic condition showed the higher BTX degradation rates and the addition of sulphate negatively affected BTX removal rates with the production of H2S. However, the addition of ferric ions resulted in the precipitation of sulphur, improving BTX degradation by the consortium. Metanosphaera sp., Methanosarcina barkeri and Methanosaeta concilii were identified in the consortium by means of 16S and directly related to the addition of ferric ions.
B S Fernandes; F A Chinalia; A Sarti; A J Silva; E Foresti; M Zaiat
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Water science and technology : a journal of the International Association on Water Pollution Research     Volume:  54     ISSN:  0273-1223     ISO Abbreviation:  Water Sci. Technol.     Publication Date:  2006  
Date Detail:
Created Date:  2006-08-30     Completed Date:  2006-12-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9879497     Medline TA:  Water Sci Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  135-41     Citation Subset:  IM    
Departamento de Hidráulica e Saneamento, Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, SP, Brazil.
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MeSH Terms
Electrophoresis, Polyacrylamide Gel
Environmental Remediation
Ferric Compounds / chemistry*
Methane / biosynthesis*
Polymerase Chain Reaction
Sulfates / chemistry*
Water Pollutants, Chemical*
Reg. No./Substance:
0/Cations; 0/Ferric Compounds; 0/Gasoline; 0/Sulfates; 0/Water Pollutants, Chemical; 74-82-8/Methane

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