UV/Fenton-Fe~0技术降解盐酸副品红的研究

采用基于Fe~0的非均相UV/Fenton技术对水中盐酸副品红(BR9)的去除效果和主要影响因素进行了研究。结果表明:当pH=3.0,Fe~025 mg/L,H_2O_2 34 mg/L时,1 min后BR9的去除率达93.4%,反应符合伪一级降解动力学;初始BR9浓度升高,反应速率降低,BR9绝对去除量增加。pH升高,BR9去除率降低,pH3时,BR9去除率70%;水中少量天然有机物(TOC 5~10 mg/L)和常见无机阴离子(Cl~-、SO_4~(2-)和NO_3~-)均抑制了体系对BR9的降解;自由基抑制实验证实降解过程符合羟基自由基(·OH)氧化机理。

Research on UV/Fenton-Fe0 process for the degradation of hydrochloride parafuchsine

Research on the removing effects of Fe0 based heterogeneous UV/Fenton process on hydrochloride para?fuchsine in water and the main influencing factors have been conducted. The results show that when pH=3.0, H2O234 mg/L,Fe025 mg/L,the removing rate of BR9 reaches 93.4%after 1 min reaction. The reaction complies with pseudo first order degradation kinetics. With the increase of initial BR9 concentration,the reaction speed de?creases and BR9 absolute removing capacity increases. With the increase of pH,the removing rate of BR9 de?crease. When its pH is>3,the average BR9 removing rate is<70%. A small amount of natural organic substances in water(TOC 5-10 mg/L)and common inorganic anions(Cl-、SO42-and NO3-)could inhibit the degradation effect of the system on BR9. The free radical inhibition test verifies that the degradation process complies with alkyl free radical(·OH)oxidation mechanism.