Multimedia Environmental Models - Chapter 7 ppsx

... mass is 78 g/mol, N is 585 /78 or 7. 5 mol/h. Df = (1 270 0 – 0) Pa D = 7. 5/1 270 0 = 5.9 ¥ 10 –4 mol/Pa h A is 0.5 ¥ 0.3 or 0.15 m 2 . Z A is 1/RT or 4.04 ¥ 10 –4 . Since D is k M AZ, k M is 9 .7 m/h. In ... diffusion processes, since it may not be obvious which route is faster. 7. 7 DIFFUSION BETWEEN PHASES: THE TWO-RESISTANCE CONCEPT 7. 7.1 Derivation Using Concentrations So far...

Ngày tải lên: 11/08/2014, 04:20

... Chapter 7 Intermedia Transport 7. 1 Introduction 7. 2 Diffusive and Nondiffusive Processes 7. 3 Molecular Diffusion within a Phase 7. 4 Turbulent or Eddy Diffusion within a Phase 7. 5 Unsteady-State ... Unsteady-State Diffusion 7. 6 Diffusion in Porous Media 7. 7 Diffusion between Phases: The Two-Resistance Concept 7. 8 Measuring Transport D Values 7. 9 Combining Series and Para...

Ngày tải lên: 11/08/2014, 04:20

... Heptadecane 2-Butanone Hexanedioc acid 2-Butoxyethanol 4-Hydroxy benzaldehyde Butyl 2-methylpropyl phthalate 3-Methylene-2-pentanone Caproloactum 2-Methyl-2-propenoic acid Cresol Ozone Decamethyl ... Phenol Diisoctyl phthalate Phosphoric acid Dimethylbenzene 2- tert -butylazo-2-methoxy-4-methyl-pentane Dodecamethyl cyclohexasiloxane Toluene 2-Ethoxyethyl acetate Xylene Source: From...

Ngày tải lên: 11/08/2014, 04:20

... – 12 .78 C)/(–12 .78 ) = 10 –6 t + IC When t is zero, C is zero, thus, IC = –ln(2)/12 .78 and ln[(2 – 12 .78 C)/2] = –12 .78 ¥ 10 –6 t or (2 – 12 .78 C) = 2 exp(–12 .78 ¥ 10 –6 t) or C = (2/12 .78 )[1 ... C approaches (2/12 .78 ) or 0.1 57 mol/m 3 . At such times, the input of 2 mol/s is equal to the total of the output by flow of 10 ¥ 0.1 57 or 1. 57 mol/s plus the output by reaction o...

Ngày tải lên: 11/08/2014, 04:20

... 349 2-nitrotoluene 1 37. 14 17. 9 651.42 2.3 –3.85 17 55 170 0 5500 891 4-nitrotoluene 1 37. 14 0.653 254.4 2. 37 51 .7 17 55 170 0 5500 1960 2,4-dinitrotoluene 182.14 0.133 270 2.01 70 17 55 170 0 5500 268 chlorobenzene ... 170 0 3280 PCB -7 223.1 0.254 1.25 5 24.4 170 5500 170 00 170 00 n/a PCB-15 223.1 0.0048 0.06 5.3 149 170 5500 170 00 170 00 n/a PCB-29 2 57. 5 0.0132 0.14 5.6 78...

Ngày tải lên: 11/08/2014, 04:20

... Deposition 500 1200 500 500 1000 170 0 250 Resuspension 200 480 200 200 400 680 100 OM conversion – – 233 233 233 233 1 17 Burial (solids) 300 72 0 67 67 3 67 7 87 33 Total burial is 1000 cm 3 ... The tem- perature, density, and pressure of the atmosphere fall steadily with increasing height, McKay, Donald. "The Nature of Environmental Media" Multimedia Environmental...

Ngày tải lên: 11/08/2014, 04:20

... 10 6 • 0 10 7 0 4000 4000 Water 7 ¥ 10 6 0.1 7 ¥ 10 5 693 0.001 1000 70 0 100 800 Soil 45000 12.3 5.5 ¥ 10 5 69.3 0.01 0 5535 0 5535 Sediment 21000 24.6 5. 17 ¥ 10 5 6930 0.0001 0 51 .7 0 51 .7 Total ... ¥ 10 –4 0.4 0.0 277 0.021 210 22.55 Water 100 0.1 0.1 0.0924 5. 27 5 27 10.14 Soil 10 1.0 0.0 0.1386 52 .7 5 27 7.31 Total 0.5 0.25 87 1264 40 ©2001 CRC Press LLC A key con...

Ngày tải lên: 11/08/2014, 04:20

... 28.3 cc/min 10 -6 10 -5 10 -4 10 -3 10 -2 0.1 1.0 10 10 2 10 3 10 4 10 -6 10 -5 10 -4 10 -3 10 -2 0.1 1.0 10 10 2 10 3 10 4 10 5 .004 0.04 0.4 3.8 38 379 10 -6 10 -5 10 -4 10 -3 10 -2 0.1 1.0 10 10 2 10 3 10 4 ... Alameda 3-Day 3-Day 4-Day 3-Day 3-Day 3-Day Time Time Flow Time Flow Time BOD 5 3564 904 25 37 2492 1540 311 a COD 876...

Ngày tải lên: 11/08/2014, 04:20

... 3 4 5 6 7 8 Control site 0.94 1.02 0.80 0.89 0.88 0 .76 0 .71 0 .75 Mined site 0 .75 0.94 1.01 0. 67 0 .75 0.88 0.53 0.89 z value 0.00 0.12 0. 37 -0 .04 0.05 0. 27 -0 .04 0.29 Mean of z = 0.1 27, Standard ... pair 1 2 3 4 5 6 7 8 Control site 0.94 1.02 0.80 0.89 0.88 0 .76 0 .71 0 .75 Mined site 0 .75 0.94 1.01 0. 67 0 .75 0.88 0.53 0.89 Difference 0.19 0.08 -0 .21 0.22 0.1...

Ngày tải lên: 11/08/2014, 09:21

... 1981a: NF-X-1 1-6 83; 1981b: NF-X-1 1-6 30; 1982: NF-X-1 1-6 42; 1983a: NF-X-1 1-6 85; 1983b: NF-X-1 1-6 93; 1983c: NF-X-3 1-1 07; 1984: NF-X-1 1-6 82; 1990: NF-X-1 1-6 61; 1992: NF-X-1 1-6 67; 1997a: NF-X-1 1- 671 ; ... Brookhaven Instruments Corp., 75 0 Blue Point Road, Holtsville NY 1 174 2, USA (www.bic.com/) Horiba Ltd., 176 71 Armstrong Ave., Irvine, CA 9 271 4, U...

Ngày tải lên: 11/08/2014, 15:20