苯甲酸对菱铁矿催化过氧化氢和过硫酸盐体系去除1,2 - 二氯乙烷的影响。
Effect of benzoic acid on the removal of 1,2-dichloroethane by a siderite-catalyzed hydrogen peroxide and persulfate system.
作者信息
Li Shengpin, Li Mengjiao, Luo Ximing, Huang Guoxin, Liu Fei, Chen Honghan
机构信息
Beijing Key Laboratory of Water Resources and Environmental Engineering, China University of Geosciences, Beijing, 100083, People's Republic of China.
China Meat Research Center, Beijing Academy of Food Sciences, Beijing, 100068, People's Republic of China.
出版信息
Environ Sci Pollut Res Int. 2016 Jan;23(1):402-7. doi: 10.1007/s11356-015-5124-0. Epub 2015 Aug 27.
Benzoic acid can affect the iron-oxide mineral dissolution and react with hydroxyl radical. This study investigated its effect on 1,2-dichloroethane removal process by siderite-catalyzed hydrogen peroxide and persulfate. The variation of benzoic acid concentrations can affect pH value and soluble iron concentrations; when benzoic acid varied from 0 to 0.5 mmol/L, pH increased while Fe(2+) and Fe(3+) concentrations decreased, resulting in 1,2-dichloroethane removal efficiency which decreased from 91.2 to 5.0%. However, when benzoic acid varied from 0.5 to 10 mmol/L, pH decreased while Fe(2+) and Fe(3+) concentrations increased, resulting in 1,2-dichloroethane removal efficiency which increased from 5.0 to 83.4%.
苯甲酸会影响铁氧化物矿物的溶解，并与羟基自由基发生反应。本研究调查了其对菱铁矿催化过氧化氢和过硫酸盐去除1,2 - 二氯乙烷过程的影响。苯甲酸浓度的变化会影响pH值和可溶性铁的浓度；当苯甲酸浓度从0变化到0.5 mmol/L时，pH升高，而Fe(2+)和Fe(3+)浓度降低，导致1,2 - 二氯乙烷的去除效率从91.2%降至5.0%。然而，当苯甲酸浓度从0.5变化到10 mmol/L时，pH降低，而Fe(2+)和Fe(3+)浓度升高，导致1,2 - 二氯乙烷的去除效率从5.0%增至83.4%。
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