Zelmanov Grigory, Semiat Raphael
Grand Water Research Institute, Technion - Israel Institute of Technology, Technion City, Haifa 32000, Israel.
Water Res. 2008 Aug;42(14):3848-56. doi: 10.1016/j.watres.2008.05.009. Epub 2008 Jun 21.
The influence of inorganic ions (HCO(3), PO(4)/HPO(4)/H(2)PO(4), Cl, SO(4), Ca, Na and Mg) on the advanced chemical oxidation process of organic compounds dissolved in water is reported here. The catalytic behavior of iron(3)-oxide-based nano-particles was investigated together with inorganic ions and hydrogen peroxide concentrations, and pH level. Phenol was chosen as a typical organic contaminant for this study as a simulating pollutant. The limiting concentrations of radical scavengers making the oxidation process inefficient were identified. The strong effect of concentration of radical scavengers HCO(3), PO(4)/HPO(4)/H(2)PO(4), the nano-catalyst and hydrogen peroxide concentrations, and pH on the phenol oxidation rate and lag time period before reaction starts was determined. It was shown that Cl, SO(4), Ca, Na and Mg ions had no significant effect on the kinetics of phenol oxidation.
本文报道了无机离子（HCO₃⁻、PO₄³⁻/HPO₄²⁻/H₂PO₄⁻、Cl⁻、SO₄²⁻、Ca²⁺、Na⁺和Mg²⁺）对溶解在水中的有机化合物的高级化学氧化过程的影响。研究了基于氧化铁的纳米颗粒与无机离子、过氧化氢浓度和pH值的催化行为。本研究选择苯酚作为典型的有机污染物作为模拟污染物。确定了使氧化过程效率低下的自由基清除剂的极限浓度。确定了自由基清除剂HCO₃⁻、PO₄³⁻/HPO₄²⁻/H₂PO₄⁻的浓度、纳米催化剂、过氧化氢浓度和pH值对苯酚氧化速率和反应开始前的滞后时间段的强烈影响。结果表明，Cl⁻、SO₄²⁻、Ca²⁺、Na⁺和Mg²⁺离子对苯酚氧化动力学没有显著影响。
