水中菲的类Fenton氧化降解及动力学研究

Degradation of Phenanthrene in Aqueous Solution using Fenton-like Oxidation and its Kinetic Analysis

采用类Fenton氧化法对水溶液中的菲进行深度处理,研究纳米零价铁(n ZVI)投加量、H2O2投加量、溶液p H值和温度四个主要因素对菲去除效果的影响。结果表明在纳米零价铁(n ZVI)投加量为1.0 g/L、H2O2为10 mmol/L、p H为3.0、温度30℃的优化条件下,菲的初始投加量(浓度)为50 mg/L在60 min内菲的去除率达到100%。此外类Fenton氧化降解菲符合伪一级降解动力学模型,且菲的投加量(浓度)越高,降解速率越快,进一步说明类Fenton氧化技术对菲降解有很好的效果。

In order to degrade phenanthrene in aqueous solution, the technology of Fenton-like oxidation was used. Four important operating parameters （I-I202 dosage, nZVI addition, pH, temperature） of Fenton-like oxidation were also researched in this paper. Results showed the optimal experiment conditions were as follows： the temperature was 30~C, pH was 3.0, the dosage of H202 was 10 mmol/L, addition of nZVI was 1.0 g/L. Under the conditions, the removal ofphenanthrene reached up to 100.0% when the initial concentration ofphenanthrene was 50 mg/L within 60 min. Moreover phenanthrene degradation linked well to the first-order rate kinetic model, and degradation rate increased with the initial concentration of phenanthrene. This further confirmed that Fenton-like was a promising technology for phenanthrene degradation,