Abstract
The gamma degradation of toxic non-oxidizing biocide dodecyl dimethyl benzyl ammonium chloride (DDBAC) was investigated. The degradation of DDBAC achieved 70–100% depending on the initial concentration and the absorbed dose, but only 10–33% dissolved organic carbon was removed. The presence of NO3 −, HCO3 −, 2-propanol and tert-butanol inhibited the degradation of DDBAC. The DDBAC degradation rate constant ratios of ·OH, ·H and e −aq was calculated as 7.4:1.4:1. The acute toxicity of 10 mg L−1 DDBAC was removed by 60% at absorbed doses of 0.5–3.0 kGy. The results showed that gamma irradiation was effective to remove DDBAC and its toxicity.
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This work was supported by Changjiang Scholars and Innovative Research Team in University [IRT-13026]; and the Science & Technology project of Tsinghua University [20141081125].
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Xu, Z., Zhang, X., Huang, N. et al. Oxidation of benzalkonium chloride by gamma irradiation: kinetics and decrease in toxicity. J Radioanal Nucl Chem 312, 631–637 (2017). https://doi.org/10.1007/s10967-017-5255-5
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DOI: https://doi.org/10.1007/s10967-017-5255-5