The pure water flux of a membrane with a diameter of 7.5 cm has to be determined  as a function of the applied pressure (see Table). The following results are obtained. Determine the water permeability coefficient by means of a graph

(a) Water supplies are often treated with chlorine as one of the processing steps in treating wastewater. Estimate the liquid diffusion coefficient of chlorine in an infinitely dilute solution of water at 289 K using the Wilke-Chang equation. (b) Estimate the liquid diffusivity of the following solutes that are transferred through dilute solutions: (i) oxygen in water at 18ºC; (ii) CO2 in water at 25ºC.

How does the melt temperature of the main phase affect diffusion?

Which of the following conditions is NOT necessary for diffusion to occur?a.) a difference in concentrations in the fluid between solute and solventb.) a difference in pressure between solute and solventc.) a difference in the materials composing the solute and solvent

The molar conductivity at infinite dilution of hydrobromic acid, sodium acetate, & sodium bromide at 298 K are 520.1 Scm2mol-1, 105.9 Scm2mol" 1, and 186.3 Scm?mol-1, respectively. Determine the molar conductivity at infinite dilution of acetic acid.

The Debye radius in a solution with an ionic strength of 75.0 mol/m3 was determined to be 0.301 nm. a. If all factors remain constant, but an ionic strength of 15.0 mol/m3 is used instead of 75.0 mol/m3, calculate the Debye radius. b. Which condition is more favorable for particle-particle attachment?

From the equivakent molar conductance at infinite dilution of potassium chloride (0.0149), sodium chloride (0.0127) amd potassium nitrate (0.0145). Solve for the equivalent conductance of sodium nitrate

Differentiate between preformed and self-forming density gradients in respect of the following: I. Type of gradient material used. II. The mode of gradient formation.

In flotation, what would happen to the attachment and detachment between the bubble and the particle given the following conditions: 1.) The particle size is much larger than the bubble size2.) The particle size is much smaller than the bubble size3.) The particle size and bubble size have roughly the similar sizes Please answer both the effects on attachment and detachment

Aluminum atoms are to be diffused into a silicon wafer using both predeposition and drive-in heat treatments; the background concentration of Al in this silicon material is known to be 2.5 x 101⁹ atoms/m³. The drive-in diffusion treatment is to be carried out at 1050°C for a period of 4.0 h, which gives a junction depth x; of 3.0 μm. Compute the predeposition diffusion time at 950°C if the surface concentration is maintained at a constant level of 2 x 1025 atoms/m³. For the diffusion of Al in Si, values of Qd and Do are 3.41 eV and 1.38 x 10-4 m²/s, respectively. min