Interfacial Energy and the Molecular Structure of Organic Compunds III. The Effect of Organic Structure on Adsorbability

Linner, Edward R.; Gortner, Ross Aiken

doi:10.1021/j150361a004

Cited by 20 publications

(8 citation statements)

References 18 publications

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“…(Murrell, Olsen & Scott, 1950). But although charcoal treatment of media can alleviate their toxicity, and charcoal is known to adsorb fatty acids (Linner & Gortner, 1935;Dubinin, 1955), these acids do not appear to be implicated here since starch, which is also known to adsorb fatty acids (Foster & Wynne, 1948; ; Murrell, Olsen & Scott, 1950), was not effective in the present work. Nor does the toxicity appear to be of the type observed by Proom, Woiwod, Barnes & Orbell (1950) and by Taylor (1957), where the property developed only when broth and agar were autoclaved together; here the broth itself has been shown to possess toxicity.…”

Section: Discussionmentioning

confidence: 64%

The Effect of Environmental Conditions on the Viability and Growth of Bacteria Damaged by Phenols

Jacobs

Harris

1960

Journal of Applied Bacteriology

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SUMMARY The effects of various environmental conditions on the viability and growth of normal Escherichia coli and Staphylococcus aureus cells, and of cells of these species which had been damaged by exposure to phenol, o‐cresol and p‐chloro‐m‐cresol, have been examined. With normal cells none of the conditions tried had any effect on the initial counts, but sometimes, more often with Staph. aureus, the bulk of growth eventually obtained in broth media was larger, especially when the medium had been made with pyridine extracted peptone, or when it had been treated with 0·1% of Norit charcoal or 0·02% of FeCl3. In contrast, damaged cells of both species were very sensitive to their environment. At room temperature, 0·1% of Norit added to tap water adsorbed more than 80% of the cells and the initial count was increased. Nevertheless the cells died thereafter. Damaged cells inoculated into broth also died, but when Norit was present both the rate and the extent of death were markedly reduced, though few cells were adsorbed. The addition of FeCl3 (0·02 or 0·03%) had no effect. At 37° damaged cells died faster than at room temperature, but the protective effect of Norit was still evident. In nephelometric studies of cultures growing in Norit treated broth the times to turbidity were shorter than those of control cultures in untreated broth, but broth treated with FeCl3 often gave longer times than the controls. In a comparison of broths prepared with peptone and/or Lab‐Lemco which had been extracted with pyridine to remove suspected toxic substances, the initial counts of treated cells were highest when only the peptone had been extracted. With media containing extracted Lab‐Lemco, or with both ingredients extracted, the counts were smaller but were still generally higher than in normal broth. The results of nephelometric studies were consonant with these findings: broths prepared with extracted ingredients generally gave shorter turbidity times than normal broth, especially with E. coli. The addition to broth of cations, especially Mg2+ (10–3 M), favoured the survival of damaged E. coli but did not influence that of Staph. aureus. But with both species, five times that concentration of Mg2+ was as effective as 0·1% of Norit, which was shown to adsorb lead, tin, copper, zinc, silver and cobalt from broth. Temperatures above 37° were unfavourable to the survival of damaged cells of both species, 44° often being completely inhibitory for Staph. aureus, but this effect was not due to traces of phenol in the inoculum. At 25° damaged E. coli recovered less well than at 30° and 37°, but damaged Staph. aureus did better at 25° and 30° than at 37°.

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Section: Discussionmentioning

confidence: 64%

The Effect of Environmental Conditions on the Viability and Growth of Bacteria Damaged by Phenols

Jacobs

Harris

1960

Journal of Applied Bacteriology

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“…of Butyl-Amyl- Langmuir's equation [9) frequently appears in the following form: This equation shows that b is equal to A" when C is a maximum, and thus b is the maximum adsorption. Tinner and (iortner (12) compared values of b obtained experimentally with those of X calculated using concentrations of saturated solutions of several organic aliphatic acids on charcoal and found good agreement.…”

Section: Implication Of Traube's Rulementioning

confidence: 89%

Nitrogen-Containing Organic Inhibitors of Corrosion

Ch'iao¹,

Mann²

1947

Ind. Eng. Chem.

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“…The data of Linner and Gortner (9) indicate that there are nearly twice as many equivalents of caproic acid as of acetic acid adsorbed from a 0.05 molar solution by a gram of Norite. This difference is not reflected in the mobility of the char suspended in solutions of these acids.…”

Section: Fig 1 the Electrokinetic Mobility-concentration Curve For mentioning

confidence: 97%

“…the number of equivalents of the various acids which will be adsorbed on a gram of this particular char from solutions of the same concentration. The data of Dinner and Gortner (9) indicate that there are nearly twice as many equivalents of caproic acid as of acetic acid adsorbed from a 0.05 molar solution by a gram of Norite. This difference is not reflected in the mobility of the char suspended in solutions of these acids.…”

Section: The Experimental Datamentioning

confidence: 97%

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Electrokinetics. XVIII. Interfacial Energy and the Molecular Structure of Organic Compounds. IV. The Electrokinetic Behavior of Charcoals in Aqueous Solutions of Organic Acids

Frampton¹,

Gortner²

1937

J. Phys. Chem.

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Interfacial Energy and the Molecular Structure of Organic Compunds III. The Effect of Organic Structure on Adsorbability

Cited by 20 publications

References 18 publications

The Effect of Environmental Conditions on the Viability and Growth of Bacteria Damaged by Phenols

The Effect of Environmental Conditions on the Viability and Growth of Bacteria Damaged by Phenols

Nitrogen-Containing Organic Inhibitors of Corrosion

Electrokinetics. XVIII. Interfacial Energy and the Molecular Structure of Organic Compounds. IV. The Electrokinetic Behavior of Charcoals in Aqueous Solutions of Organic Acids

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