ABSTRACT The removal of cyanotoxins, microcystin-LR (MLR), anatoxin-a (ANA), and cylindrospermopsin (CYN) in Detroit River water (DRW) was investigated by ozone and advanced oxidation process (AOP). Enhanced removal of all cyanotoxins was observed with increasing applied ozone dose. The reactivity of cyanotoxins with ozone followed the order of MLR>CYN>ANA in DRW at its natural pH of 7.6, as indicated by the calculated pseudo first-order oxidation coefficients (kd) of 17.5, 7.41, and 2.03 L/mg, respectively. The most efficient oxidations of MLR, CYN, and ANA with ozone in DRW were obtained at pH 5, 7.6, and 10, respectively, with kd values of 29.5, 7.41, and 4.65 L/mg. Ozone-based AOP with hydrogen peroxide did not make a significant difference in the removal of cyanotoxins compared to the application of ozone alone.

中文翻译：

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使用基于臭氧的高级氧化工艺去除底特律河水中的蓝藻毒素

摘要 通过臭氧和高级氧化工艺 (AOP) 研究了底特律河水 (DRW) 中蓝藻毒素、微囊藻毒素-LR (MLR)、毒藻毒素-a (ANA) 和圆柱藻毒素 (CYN) 的去除情况。随着所施加的臭氧剂量的增加，观察到所有蓝藻毒素的去除增强。在 DRW 的天然 pH 值为 7.6 时，蓝藻毒素与臭氧的反应性顺序为 MLR>CYN>ANA，如计算出的伪一级氧化系数 (kd) 分别为 17.5、7.41 和 2.03 L/mg . MLR、CYN 和 ANA 与 DRW 中臭氧的最有效氧化分别在 pH 5、7.6 和 10 下获得，kd 值为 29.5、7.41 和 4.65 L/mg。与单独使用臭氧相比，基于臭氧的 AOP 与过氧化氢在去除蓝藻毒素方面没有显着差异。