Institut national de la recherche scientifique (INRS-Eau Terre et Environnement), Université du Quebec, 490 rue de la Couronne, Quebec, Qc G1K 9A9, Canada.
J Environ Manage. 2013 Jan 15;114:253-60. doi: 10.1016/j.jenvman.2012.10.009. Epub 2012 Nov 6.
Removal of microcystin-LR (MC-LR) from water was evaluated using an electro-oxidation process. Different operating parameters were investigated, including current density, reaction time, anode material and type of supporting electrolyte. The current density and the type of anode material played an important role in the MC-LR degradation efficiency, whereas the type of sodium salts influenced the removal efficiency. The degradation of MC-LR was mainly attributed to direct anodic oxidation. The best operating conditions (98% of MC-LR removal) for MC-LR (initial concentration of 11-13 μg L(-1)) degradation in solution were obtained at a current density of 38 mA cm(-2) for 60 min with a recycling rate of 0.1 L min(-1) using a Ti/BDD anode in the presence of 0.2 g L(-1) of Na(2)SO(4). The colour caused by the presence of natural organic matter (humic acid) could be diminished by up to 81%. Likewise, MC-LR decomposition exhibited first-order reaction behaviours with a rate coefficient of 0.049 min(-1).
采用电氧化法去除水中的微囊藻毒素-LR（MC-LR）。考察了不同的操作参数，包括电流密度、反应时间、阳极材料和支持电解质的类型。电流密度和阳极材料的类型对 MC-LR 的降解效率起着重要作用，而钠盐的类型则影响去除效率。MC-LR 的降解主要归因于直接阳极氧化。在电流密度为 38 mA cm(-2)、反应时间为 60 min、循环速率为 0.1 L min(-1)、使用 Ti/BDD 阳极并添加 0.2 g L(-1)的 Na(2)SO(4)的最佳操作条件下，初始浓度为 11-13 μg L(-1)的 MC-LR 溶液的去除率达到 98%。存在天然有机物（腐殖酸）时产生的颜色可减少 81%。同样，MC-LR 的分解表现出一级反应行为，速率系数为 0.049 min(-1)。
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