HW5+ChE+150B+F2010

HW5+ChE+150B+F2010 - ChE 150B Prolem Set 5 Due October 1,...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
ChE 150B Prolem Set 5 Due October 1, 2010 Problem 1. (20 points) To raise the oxygen concentration in wastewater, air is injected through spargers located near the bottom of a water-holding tank. Oxygen is transferred from the released air bubbles into the surrounding aqueous phase. Determine the overall liquid mass-transfer coefficient, K L , and the percent resistance encountered in the liquid phase if the individual mass-transfer coefficients of oxygen transferring from air into 293 K water k L = 2.15x10 -5 kg mole/m 2 ·s·(kg mole/m 3 ) and k G = 9.28x10 -8 kg mole/m 2 ·s·Pa. The Henry’s law modified coefficient for oxygen in water is reported to be 4.06x10 9 Pa/(moles of oxygen per total moles of solution). Problem 2. (20 points) Jasmone, C 11 H 16 O, a valuable intermediate in the fine chemical industry, is obtained from the jasmine plant. A common method of manufacture is to extract the plant material in water, and then use benzene to concentrate the jasmine in a simple liquid-liquid extraction process. Jasmone (species A) is 170 times more soluble in
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/23/2011 for the course CHM 150 taught by Professor Hey during the Fall '10 term at Berkeley.

Page1 / 2

HW5+ChE+150B+F2010 - ChE 150B Prolem Set 5 Due October 1,...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online