The effect of temperature and acid concentration on corrosion of low carbon steel in hydrochloric acid media

Anees A. Khadom, Aprael S. Yaro, Abdul Amir H Kadum, Ahmed S. Altaie, Ahmed Y. Musa

    Research output: Contribution to journalArticle

    46 Citations (Scopus)

    Abstract

    Problem statement: The effect of different temperatures and acid concentrations on the corrosion of low carbon steel in hydrochloric acid were addressed in this study. Approach: The effect of temperature was explained by application of Arrhenius equation and transition state theory, while the acid concentration effect was explained using reaction kinetic equations. The combined effect of temperature and acid concentration then modeled using a nonlinear regression method. Results: A detail of thermodynamic parameters of activation (E, ΔH* and ΔS*) and kinetic studies for the corrosion reaction were obtained. Nonlinear corrosion rates as a function of temperature and acid concentration equation were estimated with a good prediction corrosion rates values. Conclusion: The values of activation energy E and enthalpy of activation ΔH* decrease with increase in acid concentration indicating the increasing in reaction rate. Entropy of activation ΔS* tend to lower values with increasing in acid concentration which indicated that the activated complex was more orderly relative to the initial state. The corrosion reaction was approximately firs order reaction. The observed corrosion rate values from the experimental data were in a good agreement with that predicated by the mathematical equation.

    Original languageEnglish
    Pages (from-to)1403-1409
    Number of pages7
    JournalAmerican Journal of Applied Sciences
    Volume6
    Issue number7
    DOIs
    Publication statusPublished - 2009

    Fingerprint

    Hydrochloric Acid
    Low carbon steel
    Corrosion
    Acids
    Corrosion rate
    Chemical activation
    Temperature
    Reaction kinetics
    Reaction rates
    Enthalpy
    Entropy
    Activation energy
    Thermodynamics
    Kinetics

    Keywords

    • Activation parameters
    • Corrosion kinetic equation
    • Transition state theory

    ASJC Scopus subject areas

    • General

    Cite this

    The effect of temperature and acid concentration on corrosion of low carbon steel in hydrochloric acid media. / Khadom, Anees A.; Yaro, Aprael S.; Kadum, Abdul Amir H; Altaie, Ahmed S.; Musa, Ahmed Y.

    In: American Journal of Applied Sciences, Vol. 6, No. 7, 2009, p. 1403-1409.

    Research output: Contribution to journalArticle

    Khadom, Anees A. ; Yaro, Aprael S. ; Kadum, Abdul Amir H ; Altaie, Ahmed S. ; Musa, Ahmed Y. / The effect of temperature and acid concentration on corrosion of low carbon steel in hydrochloric acid media. In: American Journal of Applied Sciences. 2009 ; Vol. 6, No. 7. pp. 1403-1409.
    @article{a2824905a49d4a22a90e759f63be1409,
    title = "The effect of temperature and acid concentration on corrosion of low carbon steel in hydrochloric acid media",
    abstract = "Problem statement: The effect of different temperatures and acid concentrations on the corrosion of low carbon steel in hydrochloric acid were addressed in this study. Approach: The effect of temperature was explained by application of Arrhenius equation and transition state theory, while the acid concentration effect was explained using reaction kinetic equations. The combined effect of temperature and acid concentration then modeled using a nonlinear regression method. Results: A detail of thermodynamic parameters of activation (E, ΔH* and ΔS*) and kinetic studies for the corrosion reaction were obtained. Nonlinear corrosion rates as a function of temperature and acid concentration equation were estimated with a good prediction corrosion rates values. Conclusion: The values of activation energy E and enthalpy of activation ΔH* decrease with increase in acid concentration indicating the increasing in reaction rate. Entropy of activation ΔS* tend to lower values with increasing in acid concentration which indicated that the activated complex was more orderly relative to the initial state. The corrosion reaction was approximately firs order reaction. The observed corrosion rate values from the experimental data were in a good agreement with that predicated by the mathematical equation.",
    keywords = "Activation parameters, Corrosion kinetic equation, Transition state theory",
    author = "Khadom, {Anees A.} and Yaro, {Aprael S.} and Kadum, {Abdul Amir H} and Altaie, {Ahmed S.} and Musa, {Ahmed Y.}",
    year = "2009",
    doi = "10.3844/ajassp.2009.1403.1409",
    language = "English",
    volume = "6",
    pages = "1403--1409",
    journal = "American Journal of Applied Sciences",
    issn = "1546-9239",
    publisher = "Science Publications",
    number = "7",

    }

    TY - JOUR

    T1 - The effect of temperature and acid concentration on corrosion of low carbon steel in hydrochloric acid media

    AU - Khadom, Anees A.

    AU - Yaro, Aprael S.

    AU - Kadum, Abdul Amir H

    AU - Altaie, Ahmed S.

    AU - Musa, Ahmed Y.

    PY - 2009

    Y1 - 2009

    N2 - Problem statement: The effect of different temperatures and acid concentrations on the corrosion of low carbon steel in hydrochloric acid were addressed in this study. Approach: The effect of temperature was explained by application of Arrhenius equation and transition state theory, while the acid concentration effect was explained using reaction kinetic equations. The combined effect of temperature and acid concentration then modeled using a nonlinear regression method. Results: A detail of thermodynamic parameters of activation (E, ΔH* and ΔS*) and kinetic studies for the corrosion reaction were obtained. Nonlinear corrosion rates as a function of temperature and acid concentration equation were estimated with a good prediction corrosion rates values. Conclusion: The values of activation energy E and enthalpy of activation ΔH* decrease with increase in acid concentration indicating the increasing in reaction rate. Entropy of activation ΔS* tend to lower values with increasing in acid concentration which indicated that the activated complex was more orderly relative to the initial state. The corrosion reaction was approximately firs order reaction. The observed corrosion rate values from the experimental data were in a good agreement with that predicated by the mathematical equation.

    AB - Problem statement: The effect of different temperatures and acid concentrations on the corrosion of low carbon steel in hydrochloric acid were addressed in this study. Approach: The effect of temperature was explained by application of Arrhenius equation and transition state theory, while the acid concentration effect was explained using reaction kinetic equations. The combined effect of temperature and acid concentration then modeled using a nonlinear regression method. Results: A detail of thermodynamic parameters of activation (E, ΔH* and ΔS*) and kinetic studies for the corrosion reaction were obtained. Nonlinear corrosion rates as a function of temperature and acid concentration equation were estimated with a good prediction corrosion rates values. Conclusion: The values of activation energy E and enthalpy of activation ΔH* decrease with increase in acid concentration indicating the increasing in reaction rate. Entropy of activation ΔS* tend to lower values with increasing in acid concentration which indicated that the activated complex was more orderly relative to the initial state. The corrosion reaction was approximately firs order reaction. The observed corrosion rate values from the experimental data were in a good agreement with that predicated by the mathematical equation.

    KW - Activation parameters

    KW - Corrosion kinetic equation

    KW - Transition state theory

    UR - http://www.scopus.com/inward/record.url?scp=70349288029&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=70349288029&partnerID=8YFLogxK

    U2 - 10.3844/ajassp.2009.1403.1409

    DO - 10.3844/ajassp.2009.1403.1409

    M3 - Article

    AN - SCOPUS:70349288029

    VL - 6

    SP - 1403

    EP - 1409

    JO - American Journal of Applied Sciences

    JF - American Journal of Applied Sciences

    SN - 1546-9239

    IS - 7

    ER -