Stability and performance enhancements of Electrokinetic-Fenton soil remediation

Y S Ng, B. Sen Gupta, M A Hashim

    Research output: Contribution to journalArticle

    13 Citations (Scopus)
    18 Downloads (Pure)

    Abstract

    Electrokinetic process is a potential in situ soil remediation process which transports the contaminants via electromigration and electroosmosis. For organic compounds contaminated soil, Fenton’s reagent is utilized as a flushing agent in electrokinetic process (Electrokinetic-Fenton) so that removal of organic contaminants could be achieved by in situ oxidation/destruction. However, this process is not applied widely in industries as the stability issue for Fenton’s reagent is the main drawback. The aim of this mini review is to summarize the developments of Electrokinetic-Fenton process on enhancing the stability of Fenton’s reagent and process efficiency in past decades. Generally, the enhancements are conducted via four paths: (1) chemical stabilization to delay H2O2 decomposition, (2) increase of oxidant availability by monitoring injection method for Fenton’s reagent, (3) electrodes operation and iron catalysts and (4) operating conditions such as voltage gradient, electrolytes and H2O2 concentration. In addition, the types of soils and contaminants are also showing significant effect as the soil with low acid buffering capacity, adequate iron concentration, low organic matter content and low aromatic ring organic contaminants generally gives better efficiency.
    Original languageEnglish
    Pages (from-to)251-263
    Number of pages13
    JournalReviews in Environmental Science and Bio/technology
    Volume13
    Issue number3
    Early online date23 Feb 2014
    DOIs
    Publication statusPublished - Sep 2014

    Fingerprint

    soil remediation
    Remediation
    Soil
    Impurities
    Soils
    pollutant
    Iron
    Electroosmosis
    iron
    Electromigration
    buffering
    flushing
    Oxidants
    transport process
    Organic compounds
    oxidant
    Biological materials
    electrolyte
    Electrolytes
    organic compound

    Keywords

    • Electrokinetic-Fenton H2O2 stability enhancement Chemical stabilization Oxidant delivery Electrodes operation and iron catalysts

    Cite this

    @article{ff46736b9c1e4b2db43155daf49e928a,
    title = "Stability and performance enhancements of Electrokinetic-Fenton soil remediation",
    abstract = "Electrokinetic process is a potential in situ soil remediation process which transports the contaminants via electromigration and electroosmosis. For organic compounds contaminated soil, Fenton’s reagent is utilized as a flushing agent in electrokinetic process (Electrokinetic-Fenton) so that removal of organic contaminants could be achieved by in situ oxidation/destruction. However, this process is not applied widely in industries as the stability issue for Fenton’s reagent is the main drawback. The aim of this mini review is to summarize the developments of Electrokinetic-Fenton process on enhancing the stability of Fenton’s reagent and process efficiency in past decades. Generally, the enhancements are conducted via four paths: (1) chemical stabilization to delay H2O2 decomposition, (2) increase of oxidant availability by monitoring injection method for Fenton’s reagent, (3) electrodes operation and iron catalysts and (4) operating conditions such as voltage gradient, electrolytes and H2O2 concentration. In addition, the types of soils and contaminants are also showing significant effect as the soil with low acid buffering capacity, adequate iron concentration, low organic matter content and low aromatic ring organic contaminants generally gives better efficiency.",
    keywords = "Electrokinetic-Fenton H2O2 stability enhancement Chemical stabilization Oxidant delivery Electrodes operation and iron catalysts",
    author = "Ng, {Y S} and {Sen Gupta}, B. and Hashim, {M A}",
    year = "2014",
    month = "9",
    doi = "10.1007/s11157-014-9335-5",
    language = "English",
    volume = "13",
    pages = "251--263",
    journal = "Reviews in Environmental Science and Bio/technology",
    issn = "1569-1705",
    publisher = "Springer Netherlands",
    number = "3",

    }

    Stability and performance enhancements of Electrokinetic-Fenton soil remediation. / Ng, Y S; Sen Gupta, B.; Hashim, M A .

    In: Reviews in Environmental Science and Bio/technology, Vol. 13, No. 3, 09.2014, p. 251-263.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Stability and performance enhancements of Electrokinetic-Fenton soil remediation

    AU - Ng, Y S

    AU - Sen Gupta, B.

    AU - Hashim, M A

    PY - 2014/9

    Y1 - 2014/9

    N2 - Electrokinetic process is a potential in situ soil remediation process which transports the contaminants via electromigration and electroosmosis. For organic compounds contaminated soil, Fenton’s reagent is utilized as a flushing agent in electrokinetic process (Electrokinetic-Fenton) so that removal of organic contaminants could be achieved by in situ oxidation/destruction. However, this process is not applied widely in industries as the stability issue for Fenton’s reagent is the main drawback. The aim of this mini review is to summarize the developments of Electrokinetic-Fenton process on enhancing the stability of Fenton’s reagent and process efficiency in past decades. Generally, the enhancements are conducted via four paths: (1) chemical stabilization to delay H2O2 decomposition, (2) increase of oxidant availability by monitoring injection method for Fenton’s reagent, (3) electrodes operation and iron catalysts and (4) operating conditions such as voltage gradient, electrolytes and H2O2 concentration. In addition, the types of soils and contaminants are also showing significant effect as the soil with low acid buffering capacity, adequate iron concentration, low organic matter content and low aromatic ring organic contaminants generally gives better efficiency.

    AB - Electrokinetic process is a potential in situ soil remediation process which transports the contaminants via electromigration and electroosmosis. For organic compounds contaminated soil, Fenton’s reagent is utilized as a flushing agent in electrokinetic process (Electrokinetic-Fenton) so that removal of organic contaminants could be achieved by in situ oxidation/destruction. However, this process is not applied widely in industries as the stability issue for Fenton’s reagent is the main drawback. The aim of this mini review is to summarize the developments of Electrokinetic-Fenton process on enhancing the stability of Fenton’s reagent and process efficiency in past decades. Generally, the enhancements are conducted via four paths: (1) chemical stabilization to delay H2O2 decomposition, (2) increase of oxidant availability by monitoring injection method for Fenton’s reagent, (3) electrodes operation and iron catalysts and (4) operating conditions such as voltage gradient, electrolytes and H2O2 concentration. In addition, the types of soils and contaminants are also showing significant effect as the soil with low acid buffering capacity, adequate iron concentration, low organic matter content and low aromatic ring organic contaminants generally gives better efficiency.

    KW - Electrokinetic-Fenton H2O2 stability enhancement Chemical stabilization Oxidant delivery Electrodes operation and iron catalysts

    U2 - 10.1007/s11157-014-9335-5

    DO - 10.1007/s11157-014-9335-5

    M3 - Article

    VL - 13

    SP - 251

    EP - 263

    JO - Reviews in Environmental Science and Bio/technology

    JF - Reviews in Environmental Science and Bio/technology

    SN - 1569-1705

    IS - 3

    ER -