Salting-Out Parameters of Gas Solubility in Aqueous Salt Solutions

Onda, Kakusaburo; Sada, Eizô; Kobayashi, Takeshi; Kito, Shigeharu; Ito, Kunimitsu

doi:10.1252/jcej.3.18

Cited by 131 publications

(88 citation statements)

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“…Thus, we assumed that all single charged electrolytes such as NaCl (∑z i 2 = 2) have a similar salt effect coefficient, whereas double charged electrolytes such as Na 2 SO 4 (∑z i 2 = 6) have a three times higher k value. Actually, salt effect coefficients (in parentheses) of single charged electrolytes NaCl (0.139) (Onda et al 1970a), KCl (0.136), and KBr (0.118) (Yano et al 1974) are indeed in relatively close agreement with each other, whereas Na 2 SO 4 (0.394) is 2.8 times higher and thus lies within the expectation (Onda et al 1970a). However for electrolytes such as NaHCO 3 (0.195), a simple ionic strength-based method seems less accurate (Onda et al 1970b).…”

Section: Assessmentsupporting

confidence: 58%

“…Actually, salt effect coefficients (in parentheses) of single charged electrolytes NaCl (0.139) (Onda et al 1970a), KCl (0.136), and KBr (0.118) (Yano et al 1974) are indeed in relatively close agreement with each other, whereas Na 2 SO 4 (0.394) is 2.8 times higher and thus lies within the expectation (Onda et al 1970a). However for electrolytes such as NaHCO 3 (0.195), a simple ionic strength-based method seems less accurate (Onda et al 1970b). Nevertheless, the mole fraction (x i ) of NaCl in seawater relative to the total salt content is very high (0.837).…”

Section: Assessmentsupporting

confidence: 58%

“…Experimental data for the solubility of ethylene in water and aqueous electrolyte solutions are published by Clever et al (1970), Grollman (1929), McAuliffe (1966), Morrison and Billett (1952), Narasimhan et al (1981), Onda et al (1970aOnda et al ( , 1970b, Orcutt and Seevers (1937), Taft et al (1955), Truchard et al (1961), Wu et al (1985), Yano et al (1968), and Yano et al (1974). The aforementioned publications are compiled and evaluated in the IUPAC Solubility Data Series by Hayduk et al (1994).…”

Section: Materials and Proceduresmentioning

confidence: 99%

“…Semiempirical calculation of ethylene solubility coefficient (α) in seawater-We adapted the equation for the temperature dependence of gas solubility at a constant salinity from Weiss (1970) and obtained a fit of α versus temperature ( Fig. 1) based on the measurements by Clever et al (1970), Grollman (1929), McAuliffe (1966), Morrison and Billett (1952), Onda et al (1970a), Orcutt and Seevers (1937), R. Battino (pers. comm.…”

Section: Materials and Proceduresmentioning

confidence: 99%

“…We derived a temperature function for k based on data for NaCl given by Morrison and Billett (1952) and Onda et al (1970a). A linear function was found to be sufficient, since the application of a quadratic function had an insignificant effect on the calculated Bunsen coefficients as a function of temperature and salinity ( Fig.…”

Section: Materials and Proceduresmentioning

confidence: 99%

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The Bunsen gas solubility coefficient of ethylene as a function of temperature and salinity and its importance for nitrogen fixation assays

Breitbarth

Mills

Friedrichs

et al. 2004

Limnology & Ocean Methods

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The acetylene reduction assay is a common method for assessing nitrogen fixation in a variety of marine and freshwater systems. The method measures ethylene, the product of the conversion of the gas acetylene to its reduced form by nitrogenase. Knowledge of the solubility of ethylene in aqueous solution is crucial to the calculation of nitrogen fixation rates and depends on the temperature and salinity of the assay conditions. Despite the increasing interest in marine nitrogen fixation, no gas solubility (Bunsen) coefficients for ethylene in seawater are published to date. Here, we provide a set of equations and present semiempirically derived Bunsen coefficients for ethylene in water (ranging from 0.069 to 0.226) for a range of temperatures and salinities that are relevant for aquatic nitrogen fixation. We apply these data to nitrogen fixation scenarios at different temperatures and salinities and stress the importance of using accurate Bunsen coefficients in nitrogen fixation assays.

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Section: Assessmentsupporting

confidence: 58%

Section: Assessmentsupporting

confidence: 58%

Section: Materials and Proceduresmentioning

confidence: 99%

Section: Materials and Proceduresmentioning

confidence: 99%

Section: Materials and Proceduresmentioning

confidence: 99%

See 3 more Smart Citations

The Bunsen gas solubility coefficient of ethylene as a function of temperature and salinity and its importance for nitrogen fixation assays

Breitbarth

Mills

Friedrichs

et al. 2004

Limnology & Ocean Methods

View full text Add to dashboard Cite

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Determination of carbon dioxide evolution rate using on-line gas analysis during dynamic biodegradation experiments

Spérandio

Paul

1997

Biotechnol. Bioeng.

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Respirometry is a precious tool for determining the activity of microbial populations. The measurement of oxygen uptake rate is commonly used but cannot be applied in anoxic or anaerobic conditions or for insoluble substrate. Carbon dioxide production can be measured accurately by gas balance techniques, especially with an on‐line infrared analyzer. Unfortunately, in dynamic systems, and hence in the case of short‐term batch experiments, chemical and physical transfer limitations for carbon dioxide can be sufficient to make the observed carbon dioxide evolution rate (OCER) deduced from direct gas analysis very different from the biological carbon dioxide evolution rate (CER). To take these transfer phenomena into account and calculate the real CER, a mathematical model based on mass balance equations is proposed. In this work, the chemical equilibrium involving carbon dioxide and the measured pH evolution of the liquid medium are considered. The mass transfer from the liquid to the gas phase is described, and the response time of the analysis system is evaluated. Global mass transfer coefficients (KLa) for carbon dioxide and oxygen are determined and compared to one another, improving the choice of hydrodynamic hypotheses. The equations presented are found to give good predictions of the disturbance of gaseous responses during pH changes. Finally, the mathematical model developed associated with a laboratory‐scale reactor, is used successfully to determine the CER in nonstationary conditions, during batch experiments performed with microorganisms coming from an activated sludge system. © 1997 John Wiley & Sons, Inc. Biotechnol Bioeng 53: 243–252, 1997.

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