ERRATA
for Printings 1 and 2 of
“Separation Process
Principles” by Seader and Henley
In addition see Errata for Printings 3 and 5
Page 20
Table 1.5: The units are lbmol/h not kmol/h.
Page 34
Fig. 2.2: The left lower equation should have brackets added to give:
Ws = [1-(T0/Ts)]Qin
Page 42
Table 2.4, Eq. (6): In the last term on the right-hand side,
change R ln to R
Page 46
Just
above the middle of the page: Change
Near the bottom of the page: In the equation for 
, move the large right square bracket to the end of the
equation.
Page 47
Near the top of the page: Delete the left square bracket at the beginning of the right-hand side of the equation for sL
Page 53
In the caption for Fig. 2.9: Change -100oF to +100oF
Page 59
Equation
(2-53): Change the factor A2
to A and the factor BP to B
Equation
(2-54): Change the factor BP
to B
Equation (2-55): Change the two factors in BP to B and the factor A2 to A
Equation
(2-56): Change the factor A2
to A and the two factors in BP to B
Equation
(2-56): Change the term 
Page 85
Lines 8 to 11 in the left-side column table for Ethylbenzene, p-Xylene, and m-Xylene, under Product 3:
Change the three 0.00 entries to 0.000, 0.005, and 0.006, respectively.
Page 86
Next to last line of Exercise 2.8: At the end of the right-hand side of
the equation for 
,
change 3992.01/T-71.29 to 3992.01/(T-71.29)
Line 6 from the bottom of the left-side column: Change the word “smallest” to the word “largest”.
Line 5 from the bottom of the left-side column: Change the word “equilmolar” to the word “equimolar”.
Page 87
Line 10 of the left-side column: Change -1,788.51 to -2,788.51
Line 12 from the bottom of the left-side column: Change the words ”Figures 2.5 and 2.7” to the words “Perry’s Handbook”.
Line 11 of the right-side column: Delete the words “use data in Figures 2.5 and 2.7 to”
Page 88
Line 4 of the right-side column: Change the phrase “rate of work in W/kmol” to “work in kJ/kmol”.
Page 93
Equations (3-16) and (3-17): Change the two derivatives dcA
and dcB to dxA and dxB,
respectively
Page 97
Figure 3.2: Equation to the left of the beaker
should be 
Page 99
Line 2 from the bottom: Change (3-37) to (3-36)
Page 103
Equation (3-42): Change the exponent on PA from 0.5 to 0.42
Page 106
Line above Eq. (3-46): Change (3-44) to (3-45)
Page 119
Paragraph
below Semiinfinite Medium: Change
all 
Page 120
Equation
(3-76): Change the numeral 1
above the 
to the numeral 2
Page 130
Line 5: Delete the words “from (3-98),”
Page 132
Figure 3.13: Interchange the words “Long” and “Short”
Page 134
Third
line below Equation (3-125): Change
Page 139
First line of SOLUTION : In the numerator, change 0.089 to 0.0089
Page 145
Line above Eq. (3-178): Change (3-30) to (3-31)
Page 146
Second line above subtitle Penetration Theory: Delete the words “From (3-137),”
Page 148
Second line above Equation (3-187): Change (3-78) to (3-181)
Page 154
Equation
(3-227): Change 
Page 165
Figure 4.1: Change the equation 
Page 188
First equation: Change 8.61 to 7.61
Second equation: Change 8.61 to 7.61 and 163,000 to 144,000
Page 194
Line 5 from the bottom: Change “5 – 40.5” to “50 – 40.5”
Page 201
First line below Figure 4.22: Change the word “on” to the words “at the middle of “
Page 210
Line 4 above Figure 4.29: Change “L/G = 9.09/” to “-L/G = -9.09/”
Page 223
Exercise 4.10 on the right-side column: In two places change “mols” to “mol/h”
Bottom line of Exercise 4.11: Change the words “Construct an h-x-y diagram and” to “From the data below,”
Page 227
First equation of Exercise 4.33:
Change 
Second
equation of Exercise 4.33: Change 
Page 229
Line 10 of Exercise 4.49: After the word “the”, add the words “extract and”
Line 6 of Exercise 4.50: Change 1,000 to 500
Line 8 of Exercise 4.50: After the word “UNIFAC”, insert “L/L”
Page 231
Line 3 of Exercise 4.74: Change 30 to 40
Page 243
Equation (5-44): Change the subscript N-1 to N+1
Page 247
Figure 5.12(b): Change the condenser duty of 483 MBH to 646 MBH
Page 253
Table
at top of page: Change the column
heading (d/b) to (b/d)
Page 259
Sketch for Unit Operation (c): Add a line for a stream leaving from the top of the Partial Condenser
Page 264
Line 1 of Exercise 5.4: Change 4.10 to 4.9
Page 274
Figure 6.2(b): Add packing to the tower drawing
Page 287
Bottom line: Change 0.59 to 0.57 and change 101 to 97.5
Page 288
Equation on line 2: Change 101 to 97.5 and change 151.5 to 146.2
Right-side equation above Equation (1): Change 151.5 to 146.2 and change 0.0230 to 0.0239
Equation (1): Change 151.5 to 146.2 and change 0.859 to 0.829
Page 290
Line starting with “Therefore” near the middle of the page: Change superscript (1) to (2)
Page 293
Line starting with “data cover” near the middle of the page: Insert the word “range” after the word “wide”
Page 313
Equation (6-62): Change the symbol “f” to italic
Page 314
Figure 6.27: Move this figure up and just before Example 6.7
Page 315
Line starting with qL about 30% of the way down from the top: Change 1.86 to 18.6
Line starting with “From (6-61)”: Change 1.83 to 183
Line starting with “From (6-57)”: Change 0.57, 0.042, and 1.51 to 0.662, 0.048, and 1.49, respectively
Line starting with EOV =: Change 1.51, 0.78, and 78% to –1.49, 0.77, and 77%, respectively
Page 317
Line just below middle of page starting with “Ada = “: Change 431 to 43.1
Page 324
Under left-side column “EM Diffusion or Dilute UM Diffusion” in Table 6.7:
Item 5: In denominator, insert “P” before “S”
Items 7 and 10: In denominators, insert “(r/M)” before “S”
Under right-side column “EM Diffusiona or Dilute UM Diffusion” in Table 6.7:
Item 10: Change “dC” to “dc”
Page 331
Figure 6.36(a): To the ordinate values, add 0.001 at the bottom left corner and to the abscissa values, change 1 at the bottom right corner to 10
Page 332
Line below the middle of the page, starting with “Using g”: Change ft/s to ft/s2
Line 4 from the bottom: Change 0.088 to 0.0613
Page 348
Line 4 of Exercise 6.7: Change “amine” to “amine solution”
Line 5 of Exercise 6.7: Change 80% to 78.4%
Page 349
Lines 12 and 15 of
Exercise 6.8: Change L/G
to L’/G’
Line 12 of Exercise 6.9: Change the word “gas” to “steam”
Data line 5 of table at top right side under the column Y in Gas: Change 0.0405 to 0.042
Line 5 of Exercise 6.11: Before the word “air”, insert the word “maximum”
Line 8 of Exercise 6.11: Before the word “parts”, insert the word “in”
Page 350
Line 7 of Exercise 6.14: Change 90oF to 80oF
Part (f) of Exercise 6.16: Delete the words “and flood rate in scfm”
Page 351
Line 1 of Exercise 6.20: Change 287 gpm to 40,000 gpm
Line 2 of
Part (b) of Exercise 6.25: Change kG
, kL ,and KG to
kg and kL
Line 5 of
Part (b) of Exercise 6.25: Change kG to kg
Line 6 of Part (b) of Exercise 6.25: Delete entire line
Page 352
Line
11 of Exercise 6.26: Change kGa to kga
Line 1 of Part (e) of Exercise 6.26: Replace the words “height of a transfer unit, HOG” with the words “volume of packing in cubic meters”
Line 6 from the top of the right-side column: Replace kmol/m2-s by kmol/s
Line 4 from the bottom of the right-side column: Replace 240 with 2400
Page 353
Line
3 of Part (c) of Exercise 6.30: Replace KL with KLa
Line 1 of Part (b) of Exercise 6.34: Change 10 to 2
Page 354
Equation under Part (a) of Exercise 6.39: Change 0.0010 to 0.00010
Page 365
Figure
7.6(a): Change xN between stages m and m+1
to xm
Page 368
Equation
(7-23): Replace DxB with
DxD
Page 378
Line
under Item 4 just below the middle of the page: Change
xD to yD
Page 388
Figure
7.26: Change QB to QR
Page 393
Figure 7.31: Line up numbers for the ordinate with the tick marks
Page 399
Equation
7.52 in Table 7.6: Replace m
with l
Equation (7-47) near the middle of the page: Delete equation number
Page 409
Table in Exercise 7.10: Under the Column Test 1, change the values under Vapor from 80.2, 76.5, and 66.5 to 79.5, 74.0, and 67.9, respectively
Table in Exercise 7.10: Under the Column Test 1, change the values under Liquid from 72.0, 60.0, and 58.5 to 68.0, 60.0 (unchanged), and 51.0, respectively
Page 411
Vapor Pressure table in Exercise 7.21: For Maleic anhydride, change the values of 80.0, 122.5, 144.0, 167.8, and 181 to 78.7, 116.8, 135.8, 155.9, and 179.5, respectively
Page 418
Bottom of the left-side column: Add the sentence, “The enthalpy of the feed mixture is 765 Btu/lbmol.”
Page 435
Paragraph below the middle of the page, starting with the words “For high”:
Change three subscripts of “C” to ”A”
Page 445
Figure
8.18: At the bottom right, change the
P2 to the right of P2 to P3
Page 460
Line 3 under Figure 8.30: Replace the words “saturated raffinate curve” with the words “Y = 0 horizontal line”
Page 467
Figure 8.36(b): In the label for the abscissa, change the exponent on Di from 5 to 2
Page 469
Fifth equation line from the
bottom: On the right
side of the equation, change 3.47 x 10-19 to 3.47 x 10-14
Fourth equation line from the
bottom: On the right side
of the equation, change 3.47 x 10-19 to 3.47 x 10-14
Third equation line from the bottom: On the left side of the equation, change (0.0704) to (0.0740)
Page 488
Line 5 of Exercise 8.17: Change 3,750 to 5,000
Page 489
Top line on the right side column: Change 8,000 to 5,185
Line 2 of the right side column: Change 80 wt% to 76 wt%
Page 490
Lines 7 and 8 on the left side column: Replace the sentence that starts with “The feed contains” with the sentence “The feed contains 22,000 grams of Hf per million grams of Zr.”
Page 491
Line 2 from the bottom of Exercise 8.30: Change 0.022 N/m to 22 dyne/cm
Line 3 of Exercise 8.32: Change 8.29 to 8.30
Page 496
Figure 9.3: Change the first four components of the feed from C3, iC4 (LK), nC4 (HK), and iC5 to iC4, nC4 (LK), iC5 (HK), and nC5
Page 500
Equation near the top of the page that starts with Nmin: Interchange the factors 0.0147 and 0.0278
Page 515
Figure 9.15: Add the symbol LN+1 to the Feed liquid stream and add the symbol V0 to the Gas stripping agent stream
Page 522
Figure 9.20: Change the word “Tolene” to “Toluene”
Figure 9.20: Change the flow rate of C2 in the distillate leaving the first column from 4,995 to 4.995
Page 524
Part (c) of Exercise 9.16: Insert the word “ratio” after the word “reflux”
Exercise 9.21: Change (9-35) to (9-37)
Page 550
Figure 10.17: Change the label of the exiting gas at the top of the column from “Lead gas” to “Lean gas”
Page 574
Line 1 under the subheading Inner-loopCalculation Sequence: Change the word “oustide” to “outside”
Page 581
Exercises 10.21, 10.22, and 10.23: Change the words “Exercise 10.8” to “Exercise 10.20”
Page 583
Figure 10.35: Move the arrow for the Feed up to Stage 3
Page 585
Figure
10.41: Change Stage 7 to Stage N
Page 607
Table 11.2: In the second column under heading of “Flow rate”, add the words “mol/s:” and delete those words from the third column. All values in the Material Balances section of this table are in mol/s.
Page 618
Figure 11.26(e): In the lower right apex of the top left triangle of this part of the figure, change L = A to H = E
Page 635
Line 12 from the top: Change the words “in l/(mol/min)” to “in L/(mol/min)”, where L is liters.
Page 651
Reference 20: Change the name of the journal to “Ind. Eng. Chem. Res.”
Page 653
Line 4 of Exercise 11.17: Insert the word “azeotropic” before the word “distillation”
Page 709
Exercise 13.6: In the vapor-liquid equilibrium data, change mol% to weight % for both y and x
Page 718
Line 1 under the heading 14.1 MEMBRANE MATERIALS: Change the word “membranes” to the word “membrane”
Page 722
Line 1 of SOLUTION: Change 2.242 to 22.42
Equation starting with 
: Change 2.242 to
22.42 and change 0.554 to 0.0554
Equation starting with 
: Change 2.242 to 22.42
and change 0.00065 to 0.0000656
Line 3 from the bottom of SOLUTION section: Change
“1,000 times” to “100 times”
Page 730
Equation (14-22): On the right-hand side, raise the molecular-weight ratio to the ½ exponent.
Page 740
Equation (14.49): Change the last exponent on the
right-hand side of the equation from 
Page 776
Last two lines of Exercise 14.20: Change hyphenation from “cros- sflow” to “cross- flow”
Page 796
Figure 15.10(d): Insert into empty space in the figure, “q = -DHads”
Page 810
Equation (4): Change 0.049 in two places to 0.0049
Page 831
Line 2 above the subhead Fixed-Bed Adsorption (Percolation): Change 6.3 to 6.7
Page 843
Equation under SOLUTION starting with qF: Replace this equation with
Line starting with “From (15-122),”: Change
0.215 to 0.186 and change 1.68 ft to 1.96 ft
Line starting with ”From (15-120)”: Change 1.68 to 1.96 in two places, and change 1.80 to 2.08 in two places, and change 93.3% to 94.2%
Page 877
Line 4 of Exercise 15.27: Change “1 ft” to “2 ft”
Page 884
Condenser type under M: Change pages from “774-776” to
”374-376”