Exact(10)
"Loss of disinfection and loss of phosphate feed may result in adverse water quality reactions that can take place rapidly," the letter stated.
When soluble phosphate concentration was about 0.04 g/L, phosphate feed began.
When amino nitrogen concentration was near 0.18 g/L, phosphate feed was terminated.
POT also sells these minerals as phosphate feed ingredients for animal nutrition and as nitrogen products for the industrial chemicals market.
The phosphate feed strategy was the same to that of mode 4. Fermentation broth was centrifuged at 4,000 rpm for 10 min and PMV (packed mycelium volume) was the percentage of the precipitation (v/v).
The further fermentation with a low-phosphorus-content nitrogen source (condensed soy protein) supported that phosphate feed combined with rational nitrogen regulation was an effective way to improve erythromycin production.
Similar(50)
The levels of soluble phosphate and amino nitrogen were chosen as the indicator for switching on and switching off phosphate feeding.
Only a minor portion of glucose-6-phosphate feeds the glycolytic pathway leading to the down-regulation of the PGI reaction.
When the SBR phosphate-P feed was increased to 70.7 mg/l the EBPR performance failed, and an average of 66.7 mg/l phosphate-P remained in the reactor effluent.
The Company focuses on the production of phosphate-based fertilizers, feed phosphate and high-grade phosphate rock, as well as ammonia and nitrogen-based fertilizers.
The company also produces nitrogen (used in fertilizer and a variety of industrial and consumer products) and phosphate (for feed products, food products and detergents).
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