scholarly journals Effect of Dissolved Oxygen Concentration on the Microbiologically Influenced Corrosion of Q235 Carbon Steel by Halophilic Archaeon Natronorubrum tibetense

2019 ◽  
Vol 10 ◽  
Author(s):  
Hongchang Qian ◽  
Pengfei Ju ◽  
Dawei Zhang ◽  
Lingwei Ma ◽  
Yuting Hu ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Dissolved Oxygen ◽  
Oxygen Concentration ◽  
Microbiologically Influenced Corrosion ◽  
Halophilic Archaeon ◽  
Dissolved Oxygen Concentration ◽  
Q235 Carbon Steel

scholarly journals Effects of Dissolved Oxygen Concentration and Flow Velocity on Corrosion of Carbon Steel in Tap Water

1998 ◽  
Vol 47 (5) ◽  
pp. 326-332 ◽  
Author(s):  
Masahiro Murata ◽  
Muneki Ohuchi ◽  
Tetsuo Fujii ◽  
Hitoshi Shiraishi ◽  
Akiyoshi Kawahito
Keyword(s):  
Carbon Steel ◽  
Dissolved Oxygen ◽  
Flow Velocity ◽  
Oxygen Concentration ◽  
Tap Water ◽  
Dissolved Oxygen Concentration

Method to Evaluate Fatigue Life of Carbon Steel Under Simulated Synchronously Changing BWR Condition

2007 ◽  
Author(s):  
Akihiko Hirano ◽  
Kazunari Uchida ◽  
Katsumi Sakaguchi
Keyword(s):  
Fatigue Life ◽  
Carbon Steel ◽  
Dissolved Oxygen ◽  
Strain Rate ◽  
Oxygen Concentration ◽  
Water Flow ◽  
Flow Rate ◽  
Water Flow Rate ◽  
Fatigue Tests ◽  
Dissolved Oxygen Concentration

The environmental fatigue life of carbon steel is influenced by BWR conditions such as water temperature, dissolved oxygen concentration, water flow rate and so on. These parameters change inconstantly during operation of BWR plants and strain rate changes in the structural components due to the temperature change. In general, fatigue life evaluation equations have been formulated based on the fatigue data obtained under constant conditions. To apply these equations to evaluate the fatigue life of actual components, a study is necessary to confirm the applicability of the proposed equations to the changing conditions. In this study, fatigue tests were performed under changing conditions of strain amplitude, strain rate, temperature, dissolved oxygen concentration and water flow rate. It was confirmed that the proposed fatigue life equation could predict the fatigue life under changing conditions.

Effect of Physicochemical Variables on Algal Autoflotation

1992 ◽  
Vol 26 (7-8) ◽  
pp. 1769-1778 ◽  
Author(s):  
S.-I. Lee ◽  
B. Koopman ◽  
E. P. Lincoln
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Concentration ◽  
Retention Time ◽  
Contact Time ◽  
Pilot Scale ◽  
Dissolved Oxygen Concentration ◽  
Physicochemical Variables ◽  
Rise Rate ◽  
Mixing Intensity ◽  
Maximum Rise

Combined chemical flocculation and autoflotation were examined using pilot scale process with chitosan and alum as flocculants. Positive correlation was observed between dissolved oxygen concentration and rise rate. Rise rate depended entirely on the autoflotation parameters: mixing intensity, retention time, and flocculant contact time. Also, rise rate was influenced by the type of flocculant used. The maximum rise rate with alum was observed to be 70 m/h, whereas that with chitosan was approximately 420 m/h. The efficiency of the flocculation-autoflotation process was superior to that of the flocculation-sedimentation process.

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