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探讨了次氯酸盐氧化法制备的高纯度高铁酸钾对微污染水中双酚A(BPA)的降解效果以其影响因素。结果表明,采用次氯酸盐氧化法自制的高铁酸钾的质量分数可以稳定在90%以上;在pH为5、7.1和9时,高铁酸钾降解BPA效果较好,降解率分别为95.4%、99.0%和98.5%;BPA降解率与高铁酸钾投加量之间的关系符合Slogistic模型,高铁酸钾的投加量越大,BPA去除率越高,但m(K2FeO4):m(BPA)大于5时,去除率增长缓慢。高铁酸钾去除微污染水中BPA的优化pH在5~9,K2FeO4与BPA的质量浓度比应当控制在5~6,优化反应时间为10 min。
The effect of high purity potassium ferrate prepared by hypochlorite oxidation on the degradation of bisphenol A (BPA) in slightly polluted water was discussed. The results showed that the mass fraction of potassium ferrate produced by hypochlorite oxidation could be stabilized at 90%, and the degradation of BPA by potassium ferrate was better at pH values of 5, 7.1 and 9 with the degradation rates of 95.4% , 99.0% and 98.5%, respectively. The relationship between BPA degradation rate and potassium ferrate dosage accorded with Slogistic model. The higher dosage of potassium ferrate was, the higher BPA removal rate was. However, the ratio of m (K2FeO4) ) Is greater than 5, the removal rate increased slowly. The optimized pH value of potassium ferrate to remove BPA in micro-polluted water is 5-9. The mass concentration ratio of K2FeO4 to BPA should be controlled at 5-6, and the optimal reaction time is 10 min.