Nitrogen as inert gas

Nitrogen as inert gas. Near normal room temperature, increase is from 0 MPa gauge,... 

Adjust to pH 4.2 to 4.5. Adjust volume with item 13 use more if necessary. Use nitrogen as inert gas during packaging. 

A sorption colloid flotation method has been developed for the separation of vanadium from sea water. The separation is based on a surfactant-collector inert gas system in which vanadate is sorbed on a positively charged colloidal iron(III) hydroxide collector. The vanadate enriched collector rises to the sea water surface and floats as a separable foam with aid of sodium dodecylsulfate as surfactant and nitrogen as inert gas. The major advantages of this method are the rapid attainment of flotation and the excellent recovery of 86 % vanadium based on spiked sea water samples. Flotation was found to be highly pH sensitive optimal values were found to be 5.00 + 0.02. In effect, at pH 4.90 a slight decline in recovery of vanadium could already be observed, whereas at pH 7 and above there was no vanadium float 53). 

Modine (1963) carried out his experiments in an adiabatic wetted-wall column 0.6096 m in length and 0.025019-m inside diameter. A gas-vapor stream containing acetone (1)-benzene(2)-nitrogen(3) or helium(3) was contacted with a cocurrently flowing liquid stream containing only the first two components. Seven runs were carried out with nitrogen as inert gas and six runs with helium. The experimental results are most accessible in a paper by... 

Source of dry argon (or nitrogen) as inert gas Syringe (10 ml) and needle Ice bath... 

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