Lecture 39 - Partitioning (VOCs)-Soil Lecture #39 ICP# 34d...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Partitioning (VOCs)-Soil ± Lecture #39 ± ICP# 34d (review) ± Sorption and sorption isotherms (water-soil) ± Octanol-water partition coefficient, natural organic matter, and sorption to soil ± ICP #34e ± Reading: N: 3.B.3 (CNP: pg. 28-32); M: 3.4.5 (CNP: 34-42) ICP #34 (VOCs Partitioning) ICP #34 (VOC Partitioning) ± d) Later one of the defendants said the calculations presented were flawed since the bottle of toluene had only been one-quarter full when it was disposed of. If only 250 mL were disposed of, how would the toluene have been distributed? ICP #34d (cont.) ± d) Solution: apply the same mass balance approach as well as the concept of solubility to determine whether enough toluene is present to saturate both the water and air phase. ± M TOT = C g V g + C H 2 O V H 2 O ± M TOT = 870g/4 = 217.5g ± V TOT = V g + V H 2 O = 3000L ± V H 2 O = (4in)(2.54cm/in)(1m/100cm)(2m)(1m) ± V H 2 O = 0.203m 3 (10 3 L/m 3 ) = 203L ICP #34d (cont.) ± 217.5g = C g V g + C H 2 O V H 2 O ± 217.5 = 0.273C H 2 O V g + C H 2 O V H 2 O ± V H 2 O = 203L; V g = 2797L ± 217.5 = 763.6C H 2 O + 203C H 2 O ± C H 2 O = 217.5g/966.6L = 0.225g ± M g = (763.6)(0.225g) = 171.8g ± M H 2 O = (203)(0.225g) = 45.7g ± Most still in air! ± C g = 171.8g/2797L = 0.0614g/L ICP #34d (cont.) ± C g = 171.8g/2797L = 0.0614g/L ± C g /M.W.= (0.0614g/L)/(92g/mol) = 6.67x10 -4 M ± P i = P g = C g (mol/L)RT = 1.63x10 -2 atm ± P i /P T = 1.63x10 -2 (pressure fraction) ± 1.63x10 -2 x10 6 ppm = 1.63x10 -4 ppm ± Still well above PEL of 200 ppm
Background image of page 1

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

View Full DocumentRight Arrow Icon
ICP #34 (VOC partitioning) ± e) The defendants hire their own expert
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/17/2008 for the course CEE 260 taught by Professor Kimf.hayes during the Fall '06 term at University of Michigan.

Page1 / 4

Lecture 39 - Partitioning (VOCs)-Soil Lecture #39 ICP# 34d...

This preview shows document pages 1 - 3. Sign up to view the full document.

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