The Kinetics of Dissolution of the Carbonate Minerals of Phosphate Ores using Dilute Acetic Acid Solutions: The Case of pH Range from 3.96 to 6.40

Our objective was to determine the effects of organic acids and pH on the rate at which selected strains ofEscherichia coli O157:H7 die in acid solutions representative of acidified pickle products (pH < 4.6). We used gluconic acid/sodium gluconate (pKa = 3.7) as a noninhibitory buffer to maintain pH at selected values in the absence of other organic acids. This was possible because we found that the inhibitory effects of this acid onE. coli strains at pH 3.1 were independent of acid concentration over a range of 2 to 200 mM. By this method, the lethal effects of acetic acid solutions (100 to 400 mM) at selected pH values between 3.1 and 4.1 were compared with the effects of pH alone (as determined using gluconate buffer). We found D-values were two- to fourfold lower with acetic acid compared with the effect of pH alone for simulated pickle brines in this pH range. Glutamic acid, an amino acid that is known to enhance acid resistance inE. coli and is a component of pickle brines, protected theE. coli strains from the specific effects of acetic acid.

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Kinetics of dissociation of tris-1,10-phenanthroline-iron(II) complex cation in aqueous acetic acid solutions

Reaction Kinetics and Catalysis Letters ◽

10.1007/bf02477537 ◽

1997 ◽

Vol 61 (1) ◽

pp. 209-215 ◽

Cited By ~ 4

Author(s):

K. Sriramam ◽

Ch. Ramakrishna ◽

J. Sreelakshmi

Keyword(s):

Acetic Acid ◽

Complex Cation ◽

Aqueous Acetic Acid ◽

Acid Solutions ◽

Kinetics Of

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Kinetics of the chromic acid oxidation of alcohols in aqueous acetone solutions

Canadian Journal of Chemistry ◽

10.1139/v68-070 ◽

1968 ◽

Vol 46 (3) ◽

pp. 441-449 ◽

Cited By ~ 13

Author(s):

Donald G. Lee ◽

William L. Downey ◽

R. Michael Maass

Keyword(s):

Acetic Acid ◽

Chromic Acid ◽

Aqueous Acetone ◽

Acid Oxidation ◽

Aqueous Acetic Acid ◽

Acid Solutions ◽

Deuterium Isotope Effect ◽

Chromic Acid Oxidation ◽

Oxidation Of Alcohols ◽

Kinetics Of

The rate law for oxidation of 2-propanol by chromic acid in aqueous acetone solutions has been found to be V = k3 [Cr(VI)| [2-propanol]ho, with the magnitude of k3 being over 700 times as great in 93.3% acetone as it is in water. In other respects (primary deuterium isotope effect, Hammett "rho" value, and salt effects) the general features of the reaction strongly resemble those observed in aqueous acetic acid solutions.

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Application of the Shrinking-Core Models for Determination of Dissolution Kinetics of Mn and Zn from Spent Zinc–Carbon Battery Powder in Organic Acid Solution

Acta Chemica Iasi ◽

10.2478/achi-2019-0008 ◽

2019 ◽

Vol 27 (1) ◽

pp. 99-109 ◽

Cited By ~ 1

Author(s):

Tevfik Agacayak ◽

Hasan Ali Taner

Keyword(s):

Acetic Acid ◽

Acid Solution ◽

Acetic Acid Solution ◽

Dissolution Kinetics ◽

Kinetic Studies ◽

Product Layer ◽

Different Temperatures ◽

Shrinking Core ◽

Kinetics Of Dissolution ◽

Kinetics Of

Abstract In this study, dissolution kinetics of manganese and zinc from spent zinc–carbon batteries in acetic acid solution was investigated. To determine the kinetics of dissolution of manganese and zinc, shrinking core model was applied to dissolution recoveries obtained at different temperatures. As a result of kinetic studies, it was determined that manganese and zinc were dissolved in acetic acid solution by diffusion from product layer and then activation energies (Ea) were calculated.

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