Quantitative modeling incorporating surface complexation for the treatment of acid mine drainage

Tatsuya Kato, Makoto Yagisawa, Mitsuaki Matsuoka, Chiharu Tokoro, Taisuke Sakakibara, Kentaro Hayashi

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Some of the many kinds of sulfide ore previously produced in Japan have generated acid mine drainage (AMD) by exposure to oxygen in groundwater or air after closure of the mines. AMD is typically treated by neutralization with lime (Ca(OH)2) or calcium carbonate (CaCO3). This process can remove many toxic elements from the AMD in a simple way, but the amount of neutralizer used is often decided based on experience because the removal mechanism of each element has not been quantified. Seasonal variation in the quality and quantity of AMD is considerable, and for many mines their AMD needs to be treated semi-permanently. Thus, more efficient and stable treatment is required in order to reduce chemical input and sludge generation. With a view to construction of a more efficient AMD treatment method and process, this study aims to develop a simulator that can represent water quality. To this end, a quantitative model that can represent changes in pH and the concentration of each element was constructed using a chemical equilibrium calculation that incorporates surface complexation by ferrihydrite and aluminum hydroxide, which have the potential to remove many kinds of toxic elements. For the surface complexation model of each hydroxide, the double layer model was used. By comparing the calculated results with experimental results obtained from neutralization of two kinds of actual AMD, it was confirmed that the quantitative model constructed in this study could successfully represent the changes in pH and residual concentration of each element.

    Original languageEnglish
    Pages (from-to)207-212
    Number of pages6
    JournalKagaku Kogaku Ronbunshu
    Volume43
    Issue number4
    DOIs
    Publication statusPublished - 2017

    Fingerprint

    Complexation
    Drainage
    Acids
    Poisons
    Aluminum Hydroxide
    Hydrated alumina
    Calcium Carbonate
    Calcium carbonate
    Sulfides
    Lime
    Chemical elements
    Ores
    Water quality
    Groundwater
    Simulators
    Oxygen
    Air

    Keywords

    • Acid Mine Drainage (AMD)
    • Aluminum Hydroxide
    • Ferric Hydrooxide
    • Surface Complexation Model

    ASJC Scopus subject areas

    • Chemistry(all)
    • Chemical Engineering(all)

    Cite this

    Quantitative modeling incorporating surface complexation for the treatment of acid mine drainage. / Kato, Tatsuya; Yagisawa, Makoto; Matsuoka, Mitsuaki; Tokoro, Chiharu; Sakakibara, Taisuke; Hayashi, Kentaro.

    In: Kagaku Kogaku Ronbunshu, Vol. 43, No. 4, 2017, p. 207-212.

    Research output: Contribution to journalArticle

    Kato, Tatsuya ; Yagisawa, Makoto ; Matsuoka, Mitsuaki ; Tokoro, Chiharu ; Sakakibara, Taisuke ; Hayashi, Kentaro. / Quantitative modeling incorporating surface complexation for the treatment of acid mine drainage. In: Kagaku Kogaku Ronbunshu. 2017 ; Vol. 43, No. 4. pp. 207-212.
    @article{c1832bf0d9bc4cebbe3c7f1027009f50,
    title = "Quantitative modeling incorporating surface complexation for the treatment of acid mine drainage",
    abstract = "Some of the many kinds of sulfide ore previously produced in Japan have generated acid mine drainage (AMD) by exposure to oxygen in groundwater or air after closure of the mines. AMD is typically treated by neutralization with lime (Ca(OH)2) or calcium carbonate (CaCO3). This process can remove many toxic elements from the AMD in a simple way, but the amount of neutralizer used is often decided based on experience because the removal mechanism of each element has not been quantified. Seasonal variation in the quality and quantity of AMD is considerable, and for many mines their AMD needs to be treated semi-permanently. Thus, more efficient and stable treatment is required in order to reduce chemical input and sludge generation. With a view to construction of a more efficient AMD treatment method and process, this study aims to develop a simulator that can represent water quality. To this end, a quantitative model that can represent changes in pH and the concentration of each element was constructed using a chemical equilibrium calculation that incorporates surface complexation by ferrihydrite and aluminum hydroxide, which have the potential to remove many kinds of toxic elements. For the surface complexation model of each hydroxide, the double layer model was used. By comparing the calculated results with experimental results obtained from neutralization of two kinds of actual AMD, it was confirmed that the quantitative model constructed in this study could successfully represent the changes in pH and residual concentration of each element.",
    keywords = "Acid Mine Drainage (AMD), Aluminum Hydroxide, Ferric Hydrooxide, Surface Complexation Model",
    author = "Tatsuya Kato and Makoto Yagisawa and Mitsuaki Matsuoka and Chiharu Tokoro and Taisuke Sakakibara and Kentaro Hayashi",
    year = "2017",
    doi = "10.1252/kakoronbunshu.43.207",
    language = "English",
    volume = "43",
    pages = "207--212",
    journal = "Kagaku Kogaku Ronbunshu",
    issn = "0386-216X",
    publisher = "Society of Chemical Engineers, Japan",
    number = "4",

    }

    TY - JOUR

    T1 - Quantitative modeling incorporating surface complexation for the treatment of acid mine drainage

    AU - Kato, Tatsuya

    AU - Yagisawa, Makoto

    AU - Matsuoka, Mitsuaki

    AU - Tokoro, Chiharu

    AU - Sakakibara, Taisuke

    AU - Hayashi, Kentaro

    PY - 2017

    Y1 - 2017

    N2 - Some of the many kinds of sulfide ore previously produced in Japan have generated acid mine drainage (AMD) by exposure to oxygen in groundwater or air after closure of the mines. AMD is typically treated by neutralization with lime (Ca(OH)2) or calcium carbonate (CaCO3). This process can remove many toxic elements from the AMD in a simple way, but the amount of neutralizer used is often decided based on experience because the removal mechanism of each element has not been quantified. Seasonal variation in the quality and quantity of AMD is considerable, and for many mines their AMD needs to be treated semi-permanently. Thus, more efficient and stable treatment is required in order to reduce chemical input and sludge generation. With a view to construction of a more efficient AMD treatment method and process, this study aims to develop a simulator that can represent water quality. To this end, a quantitative model that can represent changes in pH and the concentration of each element was constructed using a chemical equilibrium calculation that incorporates surface complexation by ferrihydrite and aluminum hydroxide, which have the potential to remove many kinds of toxic elements. For the surface complexation model of each hydroxide, the double layer model was used. By comparing the calculated results with experimental results obtained from neutralization of two kinds of actual AMD, it was confirmed that the quantitative model constructed in this study could successfully represent the changes in pH and residual concentration of each element.

    AB - Some of the many kinds of sulfide ore previously produced in Japan have generated acid mine drainage (AMD) by exposure to oxygen in groundwater or air after closure of the mines. AMD is typically treated by neutralization with lime (Ca(OH)2) or calcium carbonate (CaCO3). This process can remove many toxic elements from the AMD in a simple way, but the amount of neutralizer used is often decided based on experience because the removal mechanism of each element has not been quantified. Seasonal variation in the quality and quantity of AMD is considerable, and for many mines their AMD needs to be treated semi-permanently. Thus, more efficient and stable treatment is required in order to reduce chemical input and sludge generation. With a view to construction of a more efficient AMD treatment method and process, this study aims to develop a simulator that can represent water quality. To this end, a quantitative model that can represent changes in pH and the concentration of each element was constructed using a chemical equilibrium calculation that incorporates surface complexation by ferrihydrite and aluminum hydroxide, which have the potential to remove many kinds of toxic elements. For the surface complexation model of each hydroxide, the double layer model was used. By comparing the calculated results with experimental results obtained from neutralization of two kinds of actual AMD, it was confirmed that the quantitative model constructed in this study could successfully represent the changes in pH and residual concentration of each element.

    KW - Acid Mine Drainage (AMD)

    KW - Aluminum Hydroxide

    KW - Ferric Hydrooxide

    KW - Surface Complexation Model

    UR - http://www.scopus.com/inward/record.url?scp=85025594313&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=85025594313&partnerID=8YFLogxK

    U2 - 10.1252/kakoronbunshu.43.207

    DO - 10.1252/kakoronbunshu.43.207

    M3 - Article

    VL - 43

    SP - 207

    EP - 212

    JO - Kagaku Kogaku Ronbunshu

    JF - Kagaku Kogaku Ronbunshu

    SN - 0386-216X

    IS - 4

    ER -