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Lecture23 - ChE 210 Meeting 23 March 9 2011 Outline(F&R...

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Unformatted text preview: ChE 210: Meeting 23 March 9, 2011 Outline (F&R Sections 6.6-6.7) Homework Due Friday 03/11/2011 - Liquid-Liquid Equilibrium 6.14, 6.21, 6.26, 6.78, 6.88 - Adsorption on Solid Surfaces Please locate the paper with your last name, sit at that desk and DO NOT turn over the pages until you are asked to do so. You will receive a zero on today’s quiz if you turn the pages over before you are told to. Also, PLEASE NO TALKING. 1/5 ChE 210: Meeting 23 March 9, 2011 Eguilibrium between Two Liguid Phases Immiscible liquid phases contain a negligible amount of the other component Partially miscible liquid phases contain low concentrations of the other component If a third substance is added to a two-phase liquid mixture it distributes according to its relative solubility in each phase mass fraction solute in solvent 1 mass fraction solute in solvent 2 distribution coefficient = ) 1 "N: r . .I-, ,r' x , ‘ , 2/5 ChE 210: Meeting 21 March 2, 2011 Examgle Problem 6.89a mm = mpl = mOA,po = Extraction Unit mci =100.0 kg/h I XOA,ci = 0.0500 mC co = Xw = 0.9500 ' mOA,co = ,fi“\. . .- :,'7§\ ”Al/“N : ,. . .- \_ N . - k ‘k ”\ymu. ‘ LUCK! qu‘fflm 410d 1 mp: tbcttzfm} : .__/ ‘ 4» U u w I ‘ F " \dm ." l'\’\o| ’r (“'n._- -r m»: — {mmno ~mmt. "mo-0.00 * U I _L__‘ "H n’L/M ‘ ” (Q ,, f I \j 1/ K. '_ . r. ‘7 r: s b .- E21“ mo. “’ magi”? " 0 69 I}3 ' “Jr ,_. ‘ ' “i" ”$.90 '= O Q/ C ‘ X030; “la ‘Y\CF."LFC J (“$.90 : 0 v (CID ”‘1‘ ___— f\ . I' , ,, fl / \ “1* ) (N Lilly {Ram : Q 11> 1 kw “ / {fit-J3. *- mi?!“ \ (kwflfim )K (“0*th /\./l/‘« f , M»;— 0:)“; 4 0:31 103 ”K \ / l 3/5 ChE 210: Meeting 21 March 2, 2011 Ternam Phase Diagrams Acetone AV’AVAV‘y ,. VAVAVA AWAYA .55 AVAVAVA a, AVAVAVAV AVAVAVAVA - I 1' W AVflf‘VQVQw W'VA' ‘ .. , ’Vflg‘l’m‘fi?‘ VAVAVAVAVA VVA "VfiV‘YA’ga‘g-‘AVA VAVAVAVAVA‘VA ' AVAVAVMVAVAVAVAVAVAVAVAVAVAVA, , Hag Mimi ' 1 iiUN £33111 1;}, <1, flit/L'xf b0111p<;1;‘[email protected] QCLUW SLUQ \‘3 LL bull/1.; *m.N1w€ 901er K 13 1 131111151; ' L955)» (mg-(«4.1V 71C}; (‘1‘116‘1 1\ 1151 1‘13 L1 90““ m 13 5991"1<,1:\1:—“is i; L 1171—1117. C V E": ; 1'11; \> ’13/ “(Lka < wwtr flU‘g L" 33717. 11111551; 5 N 91 VM : «'1 5%. m aft-K ~13 4/5 ChE 210: Meeting 21 March 2,2011 Adsorption on Solid Surfaces Adsorbent is a solid with a high surface area that attracts particular components Adsorbate is a component attracted to a solid surface Equilibrium amount of adsorbate on surface depends on T 8.8 ‘- 13 29 4e 6%} an me "126 14:) 5mg (mm 8s} - Adsorption isotherms plot maximum amount of adsorbate on surface Xi* vs. concentration ci or partial pressure pi of adsorbate in contacting fluid - At low ci or pi isotherm is nearly linear m* ,- X? a ,/\ y‘fi : KC CL/ XL — %\’C> g, L: K gum dam; "(txrt'i’h‘ifil um i": at“ \< (and ’9 CM “if - Langmuir isotherm is valid over a wide range of ci or pi l 17‘ fl » (3 w ‘{ ,,»., x3 .~ firings, Cr >57 J grasp L .3 _ ‘, 1'7 l +’ k\l~ PL \ + .KL Q; K“ . K J ‘ fn‘ _ ’ r 1- ‘ Kt/L (1‘ l' 0“ 7 VI'L flag/1‘ fix d (”173/ L \‘V \‘ ‘4 KN 5/5 ...
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