Rock phosphate dissolution by specific yeast

Phosphate uptake by yeast cells

Froth flotation of phosphate rock

The development of froth flotation is traced from its earliest-known use through the discoveries leading to the present knowledge of the science. The factors influencing the flotation of non-sulfide and non-metallic minerals are discussed, and the machines used in commercial flotation operations are described. Experimental work on the flotation beneficiation of phosphate rock is presented as an...

Activation by phosphate of yeast phosphofructokinase.

The activity of yeast phosphofructokinase assayed in vitro at physiological concentrations of known substrates and effectors is 100-fold lower than the glycolytic flux observed in vivo. Phosphate synergistically with AMP activates the enzyme to a level within the range of the physiological needs. The activation by phosphate is pH-dependent: the activation is 100-fold at pH 6.4 while no effect i...

Specific Metamorphic Rock Names Recommended by IUGS

Mechanisms of lead, copper, and zinc retention by phosphate rock.

The solid-liquid interface reaction between phosphate rock (PR) and metals (Pb, Cu, and Zn) was studied. Phosphate rock has the highest affinity for Pb, followed by Cu and Zn, with sorption capacities of 138, 114, and 83.2 mmol/kg PR, respectively. In the Pb-Cu-Zn ternary system, competitive metal sorption occurred with sorption capacity reduction of 15.2%, 48.3%, and 75.6% for Pb, Cu, and Zn, ...