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通过浸渍法制备了活性炭负载钌催化剂(Ru/AC),分析了水中常见阴离子对Ru/AC催化去除溴酸盐的影响。结果表明,NO_2~-、Cl O_3~-、Cl~-、CO_3~(2-)和SO_4~(2-)均会不同程度地抑制Ru/AC对溴酸盐的催化去除。其中,NO_2~-和Cl O_3~-因会被Ru/AC同步催化还原,从而与溴酸盐的还原过程形成竞争;Cl~-、CO_3~(2-)和SO_4~(2-)则因占据催化剂表面的吸附位而与溴酸盐的吸附过程形成竞争,且吸附竞争效应比还原竞争效应对Ru/AC催化去除溴酸盐的抑制效果更明显。
The activated carbon loaded ruthenium catalyst (Ru / AC) was prepared by impregnation method. The effect of common anions in water on the bromate removal by Ru / AC catalyst was analyzed. The results showed that NO 2 -, ClO_3 ~ -, Cl ~ -, CO_3 ~ (2-) and SO_4 ~ (2-) all inhibited the catalytic removal of bromate by Ru / AC to varying degrees. Among them, NO_2 ~ - and Cl__3 ~ - will be catalyzed by Ru / AC simultaneously and thus compete with the bromate reduction process. Cl ~ -, CO_3 ~ (2-) and SO_4 ~ (2-) Occupying the adsorption sites on the catalyst surface and competing with the bromate adsorption process, and the adsorption competitive effect is more obvious than the reducing competitive effect on the Ru / AC catalytic removal of bromate.