Effects of gamma-ray treatment on wastewater toxicity from a rubber products factory

E. J. Park, H. J. Jo, H. J. Kim, K. Cho, J. Jung

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)

    Abstract

    In order to reduce the toxicity of both raw wastewater and effluent from a rubber products factory, γ-ray treatment was applied at different dose levels. The γ-ray treatment did not completely removed the toxicity, suggesting that there were major toxicants other than destroyable organic compounds. Toxicity identification evaluation (TIE phase 1) was conducted to characterize major toxicants using Daphnia magna. The suspected toxicants in both raw wastewater and effluent were mostly filterable materials and EDTA chelatable metals and, to some degree, non-polar organic compounds. Anion-exchange removable compounds, most likely organics, were found only in raw wastewater. Metal analyses showed that zinc and copper concentrations were above levels causing toxicity to D. magna. After 20 kGy γ-ray treatment of raw wastewater, filtrations both at pH 3 and at the initial pH (pH 3.6) showed dramatic change (9 to 77% and 29 to 85%, respectively) in toxicity reduction, suggesting the formation of toxic filterable materials which are stable even at acidic conditions. Unlike raw wastewater, there was no significant change in TIE results after γ-ray treatment at 20 kGy for rubber effluent.

    Original languageEnglish
    Pages (from-to)619-624
    Number of pages6
    JournalJournal of Radioanalytical and Nuclear Chemistry
    Volume277
    Issue number3
    DOIs
    Publication statusPublished - 2008 Sept

    Bibliographical note

    Funding Information:
    This work was supported by the Nuclear R&D Program and by the Basic Research Program (Grant No. R01-2005-000-10317-0) of the Korea Science & Engineering Foundation.

    Copyright:
    Copyright 2010 Elsevier B.V., All rights reserved.

    ASJC Scopus subject areas

    • Analytical Chemistry
    • Nuclear Energy and Engineering
    • Radiology Nuclear Medicine and imaging
    • Pollution
    • Spectroscopy
    • Public Health, Environmental and Occupational Health
    • Health, Toxicology and Mutagenesis

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