Phosphorus uptake from struvite is modulated by the nitrogen form applied

Phosphorus Recovery from Wastewater by Struvite Crystallisation: a Review

The present review provides an understanding of principles of struvite crystallisation and examines the techniques and processes experimented to date by researchers at laboratory, pilot and full scale to maximise phosphorus removal and reuse as struvite from wastewater effluents. Struvite is mainly known as a scale deposit causing concerns to wastewater companies. Indeed struvite naturally occu...

Astroglial uptake is modulated by extracellular K+.

Primary cultures of rat brain astrocytes were used to examine the uptake of the glucose analogue, 2-deoxy-d-glucose (2-DOG). 2-DOG competes with glucose for uptake, indicating that both are transported by the same carrier system. Extracellular K + at 1 1 . 9 m ~ increased the uptake of 2-DOG at 2-DOG concentrations greater than 100 p ~ . Uptake appears Na+-dependent only at high concentrations ...

Phosphorus Recovery from Animal Manures using Optimized Struvite Precipitation

The over-application of phosphorus, as manure by animal feeding operations, is a threat to surface water quality. Concentration of animal feeding operations and over application of manures to cropland has lead to a build-up of phosphorus on many farms (Greaves et al., 1999). Relative to crop needs, manure slurries contain higher levels of phosphorus than nitrogen. When manure is applied to meet...

Update on Phosphorus Uptake Phosphorus Uptake by Plants: From Soil to Cell

P is an important plant macronutrient, making up about 0.2% of a plant’s dry weight. It is a component of key molecules such as nucleic acids, phospholipids, and ATP, and, consequently, plants cannot grow without a reliable supply of this nutrient. Pi is also involved in controlling key enzyme reactions and in the regulation of metabolic pathways (Theodorou and Plaxton, 1993). After N, P is the...

Growth and nitrogen content of sunflower as affected by the rate and form of nitrogen