Ecotoxicological Effects of an Arsenic Remediation Method on Three Freshwater Organisms - Lemna disperma, Chlorella sp. CE-35 and Ceriodaphnia cf. dubia

Azizur Rahman, Ben Hogan, Christopher Doyle, Mohammad Rahman, Richard Lim, Bill MAHER, Ravi Naidu, Rick Krassoi, S Vigneswaran, Christel Hassler

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Chemical methods have been used for the remediation of arsenic (As)-contaminated water; however, ecological consequences of these methods have not been properly addressed. The present study evaluated the effects of the Fe-oxide-coated sand (IOCS) remediation method on As toxicity to freshwater organisms (Lemna disperma, Chlorella sp. CE-35, and Ceriodaphnia cf. dubia). The As removal efficiency by IOCS decreased substantially with time. The IOCS remediation method was less effective at suppressing the toxicity of AsV than AsIII to L. disperma but was highly effective in reducing both the AsIII and AsV toxicity to C. cf. dubia. The growth of Chlorella sp. was significantly higher (p <0.05) in remediated and pre-remediated water than in controls (non-As-contaminated filtered Colo River water) for AsIII, while the opposite was observed for AsV, indicating that AsV is more toxic than AsIII to this microalga. Although the IOCS can efficiently remove As from contaminated water, residual As and other constituents (e.g. Fe, nitrate) in the remediated water had a significant effect on freshwater organisms.
    Original languageEnglish
    Pages (from-to)1-10
    Number of pages10
    JournalWater, Air, and Soil Pollution
    Volume226
    Issue number12
    DOIs
    Publication statusPublished - 2015

    Fingerprint

    Remediation
    Arsenic
    arsenic
    remediation
    Toxicity
    Water
    toxicity
    water
    microalga
    chemical method
    river water
    Nitrates
    Sand
    Rivers
    freshwater organism
    method
    effect
    oxide
    nitrate
    Oxides

    Cite this

    Rahman, Azizur ; Hogan, Ben ; Doyle, Christopher ; Rahman, Mohammad ; Lim, Richard ; MAHER, Bill ; Naidu, Ravi ; Krassoi, Rick ; Vigneswaran, S ; Hassler, Christel. / Ecotoxicological Effects of an Arsenic Remediation Method on Three Freshwater Organisms - Lemna disperma, Chlorella sp. CE-35 and Ceriodaphnia cf. dubia. In: Water, Air, and Soil Pollution. 2015 ; Vol. 226, No. 12. pp. 1-10.
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    abstract = "Chemical methods have been used for the remediation of arsenic (As)-contaminated water; however, ecological consequences of these methods have not been properly addressed. The present study evaluated the effects of the Fe-oxide-coated sand (IOCS) remediation method on As toxicity to freshwater organisms (Lemna disperma, Chlorella sp. CE-35, and Ceriodaphnia cf. dubia). The As removal efficiency by IOCS decreased substantially with time. The IOCS remediation method was less effective at suppressing the toxicity of AsV than AsIII to L. disperma but was highly effective in reducing both the AsIII and AsV toxicity to C. cf. dubia. The growth of Chlorella sp. was significantly higher (p <0.05) in remediated and pre-remediated water than in controls (non-As-contaminated filtered Colo River water) for AsIII, while the opposite was observed for AsV, indicating that AsV is more toxic than AsIII to this microalga. Although the IOCS can efficiently remove As from contaminated water, residual As and other constituents (e.g. Fe, nitrate) in the remediated water had a significant effect on freshwater organisms.",
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    Ecotoxicological Effects of an Arsenic Remediation Method on Three Freshwater Organisms - Lemna disperma, Chlorella sp. CE-35 and Ceriodaphnia cf. dubia. / Rahman, Azizur; Hogan, Ben; Doyle, Christopher; Rahman, Mohammad; Lim, Richard; MAHER, Bill; Naidu, Ravi; Krassoi, Rick; Vigneswaran, S; Hassler, Christel.

    In: Water, Air, and Soil Pollution, Vol. 226, No. 12, 2015, p. 1-10.

    Research output: Contribution to journalArticle

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    AU - Hogan, Ben

    AU - Doyle, Christopher

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    AB - Chemical methods have been used for the remediation of arsenic (As)-contaminated water; however, ecological consequences of these methods have not been properly addressed. The present study evaluated the effects of the Fe-oxide-coated sand (IOCS) remediation method on As toxicity to freshwater organisms (Lemna disperma, Chlorella sp. CE-35, and Ceriodaphnia cf. dubia). The As removal efficiency by IOCS decreased substantially with time. The IOCS remediation method was less effective at suppressing the toxicity of AsV than AsIII to L. disperma but was highly effective in reducing both the AsIII and AsV toxicity to C. cf. dubia. The growth of Chlorella sp. was significantly higher (p <0.05) in remediated and pre-remediated water than in controls (non-As-contaminated filtered Colo River water) for AsIII, while the opposite was observed for AsV, indicating that AsV is more toxic than AsIII to this microalga. Although the IOCS can efficiently remove As from contaminated water, residual As and other constituents (e.g. Fe, nitrate) in the remediated water had a significant effect on freshwater organisms.

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