Energetic aspects of the metabolism of reduced sulphur compounds in Thiobacillus denitrificans

1976 ◽  
Vol 42 (4) ◽  
pp. 483-492 ◽  
Author(s):  
Anje Timmer-ten Hoor
Keyword(s):  
Thiobacillus Denitrificans ◽  
Sulphur Compounds ◽  
Reduced Sulphur Compounds

scholarly journals Oxidation of volatile reduced sulphur compounds in biotrickling filter inoculated with Thiobacillus thioparus

2010 ◽  
Vol 13 (5) ◽  
pp. 0-0 ◽  
Author(s):  
Manuel Cáceres ◽  
Marjorie Morales ◽  
Ricardo San Martín ◽  
Homero Urrutia ◽  
Germán Aroca
Keyword(s):  
Biotrickling Filter ◽  
Sulphur Compounds ◽  
Thiobacillus Thioparus ◽  
Reduced Sulphur Compounds

Emissions of reduced sulphur compounds from the surface of primary and secondary wastewater clarifiers at a Kraft Mill

2008 ◽  
Vol 156 (1-4) ◽  
pp. 37-49 ◽  
Author(s):  
Lionel Catalan ◽  
Victor Liang ◽  
Andrea Johnson ◽  
Charles Jia ◽  
Brian O’Connor ◽  
...  
Keyword(s):  
Sulphur Compounds ◽  
Kraft Mill ◽  
Reduced Sulphur Compounds

Erratum to “Monitoring of atmospheric reduced sulphur compounds and their oxidation in two coastal landfill areas”

2007 ◽  
Vol 41 (18) ◽  
pp. 3938
Author(s):  
Sang-Keun Song ◽  
Zang-Ho Shon ◽  
Ki-Hyun Kim ◽  
Seong Cheon Kim ◽  
Yoo-Keun Kim ◽  
...  
Keyword(s):  
Sulphur Compounds ◽  
Reduced Sulphur Compounds

scholarly journals Oxidation of atmospheric reduced sulphur compounds: perspective from laboratory studies

1997 ◽  
Vol 352 (1350) ◽  
pp. 171-182 ◽  
Author(s):  
A. R. Ravishankara ◽  
Yinon Rudich ◽  
Ranajit Talukdar ◽  
Stephen B. Barone
Keyword(s):  
Boundary Layer ◽  
Laboratory Experiments ◽  
Marine Boundary Layer ◽  
Field Observations ◽  
Dimethyl Sulphide ◽  
Laboratory Studies ◽  
Sulphur Compounds ◽  
Complex Sequence ◽  
End Products ◽  
Reduced Sulphur Compounds

Results of laboratory experiments which address the course of the OH + DMS (dimethyl sulphide) reaction in the atmosphere are presented. It is shown that OH reacts via a complex sequence of reactions to produce CH 3 S and other products, and argued that NO 3 is unlikely to be an important oxidizer of DMS in the marine boundary layer (MBL) because it is very efficiently taken up by water droplets. A simplified mechanism for the oxidation of DMS in the troposphere is presented. This mechanism explains some of the field observations on the end products of DMS oxidation and their variations with temperature.

Impact of septic compounds and operational conditions on the microbiology of an activated sludge system

2007 ◽  
Vol 55 (6) ◽  
pp. 135-142 ◽  
Author(s):  
Carl Pelletier ◽  
Mary Ann Fitzsimmons ◽  
Sophie Deschênes ◽  
Michael Paice
Keyword(s):  
Activated Sludge ◽  
Digital Imaging ◽  
Volume Index ◽  
Operating Parameters ◽  
Sludge Volume Index ◽  
Sulphur Compounds ◽  
Operational Conditions ◽  
Volatile Organic ◽  
Volatile Organic Acids ◽  
Reduced Sulphur Compounds

In activated sludge (AS) biotreatment, septic compounds such as volatile organic acids and reduced sulphur compounds have been frequently cited as a major cause of Thiothrix and Type 021N filamentous bulking. These filaments are common in Canadian pulp and paper biotreatment systems, where they cause settling problems in secondary clarifiers. We conducted a 14-week study of a TMP/newsprint mill effluent to characterize the septic compounds entering the biotreatment, and to determine correlations with AS biomass characteristics and biotreatment operating parameters. A significant correlation was found between the sludge volume index, the abundance of Type 021N, and the propionic acid (PA) concentration in the primary clarified effluent. PA also induced a significant change in the flocculating bacteria size distribution determined by digital imaging. Consequently, the correlation observed between PA and Type 021N bulking is an indirect effect of inhibition of floc-forming microorganisms, giving a competitive advantage to filaments.

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