Diffusion coefficient of ethylene gas in water

Huq, Aminul; Wood, T.

doi:10.1021/je60037a036

Cited by 27 publications

(10 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the ratio of the aqueous diffusion coefficient of TCE compared to the daughter products, the D for the daughter products was multiplied by 1.2. 23 value for the daughter products by as much as an order of magnitude resulted in only a 10% change in the regressed firstorder rate constant.…”

Section: ■ Experimental Sectionmentioning

confidence: 94%

Coupled Diffusion and Abiotic Reaction of Trichlorethene in Minimally Disturbed Rock Matrices

Schaefer¹,

Towne²,

Lippincott³

et al. 2013

Environ. Sci. Technol.

View full text Add to dashboard Cite

Laboratory experiments were performed using minimally disturbed sedimentary rocks to measure the coupled diffusion and abiotic reaction of trichloroethene (TCE) through rock core samples. Results showed that, for all rock types studied, TCE dechlorination occurred, as evidenced by generation of acetylene, ethene, and/or ethane daughter products. First-order bulk reaction rate constants for TCE degradation ranged from 8.3 × 10(-10) to 4.2 × 10(-8) s(-1). Observed reaction rate constants showed a general correlation to the available ferrous iron content of the rock, which was determined by evaluating the spatial distribution of ferrous iron relative to that of the rock porosity. For some rock types, exposure to TCE resulted in a decrease in the effective diffusivity. Scanning electron microscopy (SEM) indicated that the decrease in the effective diffusivity was due to a decrease in the porosity that occurred after exposure to TCE. Overall, these coupled diffusion and reaction results suggest that diffusion of TCE into rock matrices as well as the rate and extent of back-diffusion may be substantially mitigated in rocks that contain ferrous iron or other naturally occurring reactive metals, thereby lessening the impacts of matrix diffusion on sustaining dissolved contaminant plumes in bedrock aquifers.

show abstract

Section: ■ Experimental Sectionmentioning

confidence: 94%

Coupled Diffusion and Abiotic Reaction of Trichlorethene in Minimally Disturbed Rock Matrices

Schaefer¹,

Towne²,

Lippincott³

et al. 2013

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Sources for diffusivities Ferrell and Himmelblau, 1967 Ferrell and Himmelblau, 1967 Wise and Houghton, 1968 Thomas and Adams, 1965 Ferrell and Himmelblau, 1967Himmelblau, 1964 Ferrell and Himmelblau, 1967 Wise and Houghton, 1968 Ferrell and Himnielblau, 1967 Groothuis and Kramers, 1955Himmelblau, 1964Vivian and Peaceman, 1956 Baird and Davidson, 1962 Wise and Houghton, 1968 Houghton et al, 1962 Bonoli, 1969 Chiang andToor, 1960 This work Bonoli, 1969 Huq andWood, 1968 Witherspoon and Bonoli, 1969Vivian and King, 1964 Witherspoon and Saraf, 1965 Witherspoon and Bonoli, 1969 Bonoli and Witherspoon, 1968 Bonoli and Witherspoon, 1968 Bonoli and Witherspoon, 1968 Ratcliff and Reid, 1961 Bonoli and Witherspoon, 1968 Bonoli and Witherspoon, 1968 Gary-Bob0 and Weber, 1969 Hammond and Stokes, 1953 Gary-Bob0 and Weber, 1969 Gary-Bob0 and Weber, 1969 Lyons and Sandquist, 1953 Garner and Marchant, 1961 Gary-Bob0 and Weber, 1969 Garner and Marchant, 1961Byers and King, 1966 Merliss and Colver, 1969Garner and Marchant, 1961Garner and Marchant, 1961Garner and Marchant, 1961Anderson et al, 1958 Chandrasekaran and King, 1972 Lewis, 1955 Robinson and Stokes, 1955Gosting and Akeley, 1952 Gary-Bob0 and Weber, 1969 Gary-Bob0 and Weber, 1969 Gary-Bob0 and Weber, 1969 Gary-Bob0 and Weber, 1969 Gary-Bob0 and Weber, 1969 Lewis, 1955 Lewis, 1955Bidstrup and Geankoplis, 1963 Lewis, 1955Albery et al, 1967Bidstrup and Geankoplis, 1963Albery et al, 1967Bidstrup and Geankoplis, 1963Albery et al, 1967Garland and Stockmayer, 1965Albery et al, 1967Bidstrup and Geankoplis, 1963Albery et al, 1967Albery et al, 1967...…”

mentioning

confidence: 99%

Prediction of diffusion coefficients for nonelectrolytes in dilute aqueous solutions

1974

View full text Add to dashboard Cite

Diffusivities of dissolved substances in water have been correlated by Wilke and Chang ( 1935), Scheibel ( 1954), and O t h e r and Thakar (1953). These correlations have proven to be fairly reliable yielding similar, but by no means identical, results, Othmer and Thakar:Wilke and Chang:( 2 ) 7.4(10-8) (2.6 M2)0.5 T P2v1°.6 0 1 2 = Scheibel:All three correlations were developed from data largely obtained prior to 1950 and included that from the International Critical Tables (1929) and the work of Arnold ( 1930). Reid and Sherwood (1966) analyzed these correlations for water as solvent and found that all three gave identical average absolute errors of 11%. It is noted, though, that the analysis was based on diffusivities of some 37 substances of which 15 were obtained from the International Critical Tables. It appeared of considerable interest, therefore, to determine the extent to which the correlations were still applicable in the light of the large number of diffusivities reported since 1950. For the purpose of mathematically testing the three correlations, only data appearing in the literature since 1950 were compiled. In some instances even relatively recent data were judged inaccurate when compared with those of other workers and were/excluded. The mathematical analysis initially took the form of determining average errors between measured diffusivities and those estimated from the three correlations.Subsequently it was possible to propose new constants for the Othmer-Thakar equation, and a new value for the association parameter for the Wilke-Chang equation when applied to water as solvent. The revised Othmer-Thakar equation based on diffusivities of some 87 different dissolved substances in dilute aqueous solutions is 13.26( Dl2 = P21.4V 0.589 (4)The revised association parameter for water of 2.26 instead of 2.6 is likewise recommended for use in the WilkeChang equation.Also reported in this work are the diffusivities of vinyl chloride monomer in water which were measured at atmospheric pressure and temperatures of 25", 50", and 75°C EXPERIMENTDistilled water and vinyl chloride having a specified minimum purity of 99.9% purchased krom llatheson of Canada, were used in these experiments. The calculation of diffusivity depended on a knowledge of equilibrium solubilities of vinyl chloride in water which have been measured in this laboratory and reported elsewhere (Hayduk and Laudie, 1974).Integral binary diffusivities were calculated from the steady state rate of shrinkage ok the gas confined within the capillaries of the diffusion cell. The equilibrium concentration at atmospheric pressure was sufficiently low, l e s than 0.002 mole fraction, so that the integral diffusivity was considered to approximate the diffusivity at infinite dilution. The appropriate equation for calculating the diffusivity for solutions of constant mass concentration was (5)The mass flux, length of diffusion path, and solution density (taken as solvent density) were measured or were readily calculated. The vinyl chloride concentrati...

show abstract

“…This value is the mean taken from the literature (Huq and Wood, 1968) The diffusion coefficient for oxygen in water at 25°C was set equal to 2.5e-5 cm 2 s −1 (Perry and Chilton, 1974 Note: Listed units are only intended for presentation of the results and not for direct substitution in the biophysical model equations which require SI units.…”

Section: Appendix Evaluation Of Required Overall Ethene Volumetric Mamentioning

confidence: 99%

Kinetic characterization of mass transfer limited biodegradation of a low water soluble gas in batch experiments—Necessity for multiresponse fitting

heyder

Vanrolleghem

Langenhove

et al. 1997

Biotechnol. Bioeng.

View full text Add to dashboard Cite

Diffusion coefficient of ethylene gas in water

Cited by 27 publications

References 10 publications

Coupled Diffusion and Abiotic Reaction of Trichlorethene in Minimally Disturbed Rock Matrices

Coupled Diffusion and Abiotic Reaction of Trichlorethene in Minimally Disturbed Rock Matrices

Prediction of diffusion coefficients for nonelectrolytes in dilute aqueous solutions

Kinetic characterization of mass transfer limited biodegradation of a low water soluble gas in batch experiments—Necessity for multiresponse fitting

Contact Info

Product

Resources

About