Effect of Dissolved Carbon Dioxide on Accumulation of Organic Acids in Liquid Hot Water Pretreated Biomass Hydrolyzates

2007 ◽  
pp. 301-311 ◽  
Author(s):  
G. Peter Van Walsum ◽  
Maurilio Garcia-Gil ◽  
Shou-Feng Chen ◽  
Kevin Chambliss
Keyword(s):  
Carbon Dioxide ◽  
Organic Acids ◽  
Hot Water ◽  
Dissolved Carbon ◽  
Liquid Hot Water ◽  
Dissolved Carbon Dioxide ◽  
Pretreated Biomass

Impact of Dursban and Abate on Microbial Numbers and Some Chemical Properties of Standing Ponds

1975 ◽  
Vol 10 (1) ◽  
pp. 33-41 ◽  
Author(s):  
J. Butcher ◽  
M. Boyer ◽  
CD. Fowle
Keyword(s):  
Carbon Dioxide ◽  
Active Ingredient ◽  
Algal Blooms ◽  
Chemical Properties ◽  
Total Carbon ◽  
Dissolved Carbon ◽  
Photosynthetic Productivity ◽  
Dissolved Carbon Dioxide ◽  
Microbial Numbers

Abstract Eleven small ponds, lined with polyethylene, were used to assess the consequences of applications of *DursbanR at 0.004, 0.030, 0.100 and 1.000 ppm and AbateR at 0.025 and 0.100 ppm active ingredient. The treated ponds showed a more pronounced long-term increase in pH and dissolved oxygen and decreasing total and dissolved carbon dioxide in comparison with untreated ponds. Algal blooms were of longer duration in treated ponds than in controls. Total photosynthetic productivity was higher in treated ponds but bacterial numbers did not change significantly. Photosynthetic productivity was estimated by following the changes in total carbon dioxide.

scholarly journals FORMATION CONDITIONS OF GROUNDWATER OF THE UPPER JURASSIC OF THE CENTRAL REGIONS OF THE ZAURAL MEGAMONOCLYSIS

2021 ◽  
Vol 2 (1) ◽  
pp. 181-190
Author(s):  
Dmitry A. Novikov ◽  
Aleksandr N. Pyrayev ◽  
Fedor F. Dultsev ◽  
Anatoliy V. Chernykh ◽  
Svetlana V. Bakustina ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Isotopic Composition ◽  
Upper Jurassic ◽  
Biogenic Origin ◽  
Dissolved Carbon ◽  
Dissolved Carbon Dioxide ◽  
Oxygen And Hydrogen Isotopes ◽  
Central Regions ◽  
First Results ◽  
Formation Conditions

The article presents the first results of complex isotope-hydrogeochemical studies of reservoir waters of the Upper Jurassic deposits of the central regions of the Zaural megamonoclysis. It was shown that most waters have a narrow distribution of oxygen and hydrogen isotopes (δD from -103.2 to -85.6 ‰ and δO from -15.4 to -12.9 ‰). Some of them have pronounced excursions on the isotopic composition, which indicates a difference in their genesis: from condensate to mixed with ancient infiltrogenic. The isotopic composition of carbon of water-dissolved carbon dioxide (δС from -41.6 to -16.3 ‰) indicates its biogenic origin and the possibility of interstratal flows from overlying horizons.

Holding of Atlantic Mackerel (Scomber scombrus) in Refrigerated Sea Water

1977 ◽  
Vol 34 (3) ◽  
pp. 439-443 ◽  
Author(s):  
D. W. Lemon ◽  
L. W. Regier
Keyword(s):  
Carbon Dioxide ◽  
Sea Water ◽  
Fish Muscle ◽  
Sodium Content ◽  
Oxidative Rancidity ◽  
Dissolved Carbon ◽  
Atlantic Mackerel ◽  
Scomber Scombrus ◽  
Dissolved Carbon Dioxide ◽  
Lower Temperature

Refrigerated sea water proved to be an improved method of holding Atlantic mackerel (Scomber scombrus). The uniform lower temperature and reduction in available oxygen retarded the development of oxidative rancidity. Textural deterioration was also retarded. The sodium uptake from and the potassium loss to the sea water was not excessive, and taste panelists could not consistently identify samples with elevated sodium content. The addition of carbon dioxide to the RSW did not regularly affect the level of spoilage as monitored by the measurement of trimethylamine. The values, however, were low for all holding systems, even after 9 days. The presence of dissolved carbon dioxide in the fish muscle made the fish unacceptable for canning.

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