Long term effects of temperature and substrate level on BNR with an external nitrification reactor

2003 ◽  
Vol 48 (8) ◽  
pp. 35-41
Author(s):  
J.S. Ha ◽  
E. Choi
Keyword(s):  
Phosphorus Content ◽  
Phosphorus Release ◽  
P Uptake ◽  
Biological Nutrient Removal ◽  
Long Term Effects ◽  
Kinetic Rates ◽  
Substrate Level ◽  
Higher Temperature ◽  
Effects Of Temperature

This study was conducted with a BNR (biological nutrient removal) process with an external nitrification and switching arrangement of anoxic and oxic stages. It was observed that the SPRR (specific phosphorus release rate) and SDNR(specific denitrification rate) were greatly affected by the organic loads, and SDNR had a higher temperature effect than other kinetic rates including nitrification. It was further observed that the stoichiometric values like PHA (poly hydroxyalkanoate) stored for P release and PHA consumed for P uptake also varied. Variations of % Px(phosphorus content) and PHA as intracellular matter suggest the PAOs were more active at lower temperatures with this process configuration, where more than 70% of NH4-N and phosphorus were removed at temperatures below 10°.

Short- and long-term effects of temperature on the Anammox process

2008 ◽  
Vol 154 (1-3) ◽  
pp. 688-693 ◽  
Author(s):  
J. Dosta ◽  
I. Fernández ◽  
J.R. Vázquez-Padín ◽  
A. Mosquera-Corral ◽  
J.L. Campos ◽  
...  
Keyword(s):  
Long Term Effects ◽  
Short And Long Term ◽  
Effects Of Temperature ◽  
Anammox Process

Long-Term Effects of Temperature Exposure on SLM 304L Stainless Steel

JOM ◽  
2017 ◽  
Vol 70 (3) ◽  
pp. 384-389 ◽  
Author(s):  
Tarak Amine ◽  
Caitlin S. Kriewall ◽  
Joseph W. Newkirk
Keyword(s):  
Stainless Steel ◽  
304L Stainless Steel ◽  
Long Term Effects ◽  
Effects Of Temperature ◽  
Temperature Exposure

Long-term effects of temperature on carbon mineralisation processes

2001 ◽  
Vol 33 (7-8) ◽  
pp. 1049-1057 ◽  
Author(s):  
P Dalias ◽  
J.M Anderson ◽  
P Bottner ◽  
M.-M Coûteaux
Keyword(s):  
Long Term Effects ◽  
Carbon Mineralisation ◽  
Effects Of Temperature

Long-term effects of temperature on gonad production, colour and flavour of the sea urchin Glyptocidaris crenularis

2014 ◽  
Vol 95 (1) ◽  
pp. 139-143 ◽  
Author(s):  
Chong Zhao ◽  
Xiaofei Tian ◽  
Ping Sun ◽  
Lunchao Hu ◽  
Wenping Feng ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Sea Urchins ◽  
Long Term Effects ◽  
Significant Difference ◽  
Glyptocidaris Crenularis ◽  
Temperature Group ◽  
Effects Of Temperature ◽  
Gonad Production

The increasing market demand for Glyptocidaris crenularis shapes its great potential for aquaculture. Temperature is an important factor affecting gonad production and quality of sea urchins. Therefore, it is essential and valuable to carry out an evaluation of the temperature effects on gonad production and quality in G. crenularis before potential aquaculture. Here, we investigated the long-term effects of temperature on gonad production, colour and flavour in G. crenularis. There was no significant difference of test diameter, height and body weight between the sea urchins in high (16–23°C) and low (12–16°C) temperatures (P > 0.05). Glyptocidaris crenularis showed significantly higher gonad production and index in high temperature and in low temperature (P < 0.05). L*, a*, b* readings were slightly higher in the low temperature groups, although no significant difference was found (P > 0.05). Subjective colour and flavour ratings found that G. crenularis in the low temperature group showed significantly better colour (P = 0.003) and flavour (P < 0.001) than those in the high temperature group. The present study provides valuable and insightful information into the establishing G. crenularis aquaculture.

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