scholarly journals Kinetic performance of CO2 absorption into a potassium carbonate solution promoted with the enzyme carbonic anhydrase: Comparison with a monoethanolamine solution

2015 ◽  
Vol 279 ◽  
pp. 335-343 ◽  
Author(s):  
Shihan Zhang ◽  
Yongqi Lu
Keyword(s):  
Carbonic Anhydrase ◽  
Potassium Carbonate ◽  
Carbonate Solution ◽  
Co2 Absorption ◽  
Potassium Carbonate Solution

Effect of separating giant foxtail (Setaria faberi) seeds from soil using potassium carbonate and centrifugation on viability and germination

Weed Science ◽  
1998 ◽  
Vol 46 (5) ◽  
pp. 545-548 ◽  
Author(s):  
Edward C. Luschei ◽  
Douglas D. Buhler ◽  
Jack H. Dekker
Keyword(s):  
Potassium Carbonate ◽  
Extraction Method ◽  
Inorganic Salt ◽  
Seed Viability ◽  
Carbonate Solution ◽  
Setaria Faberi ◽  
Seed Damage ◽  
Giant Foxtail ◽  
Pressure Test ◽  
Potassium Carbonate Solution

Changes in weed seedbank composition are often monitored by removing seeds from soil samples. One extraction method accomplishes this by creating a slurry of soil and a concentrated inorganic salt solution. Centrifugation is then used to separate constituents of differing densities. We have found that centrifugation of giant foxtail seeds in 3.2 M potassium carbonate solution as conducted in a centrifugation/flotation extraction method can reduce viability as measured by germination and tetrazolium tests. In one experiment, centrifugation/flotation separation reduced germination of giant foxtail seeds from 94 to 52%. The likely cause of seed damage was the high pH of the potassium carbonate solution in conjunction with the increased hydrostatic pressure due to centrifugation. While centrifugation affected quantitative measures of seed viability, it did not alter qualitative viability estimates using a pressure test.

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