【摘要】 以金属卤素灯(250 W,波长≥365 nm)为光源,研究了对乙酰氨基酚(APAP)在纳米TiO2悬浆体系中的光催化降解,考察了溶液初始pH、APAP初始浓度和TiO2投加剂量对APAP光催化降解的影响。结果表明:TiO2光催化工艺可以有效地去除水中的APAP;在pH值为3.0、TiO2投加量为0.5 g/L的条件下,初始浓度为30μmol.L-1的APAP水溶液在光照60min后的光降解率可达59.1%;APAP的光催化降解率与其初始浓度、TiO2光催化剂的用量、溶液的pH值等因素有关。更多还原

【Abstract】 Using a 250W metal halide lamp(λ >= 365 nm) as the light source,the TiO2 induced photocatalytic degradation of acetaminophen(APAP) in suspended solution was studied.The effects of different kinds of initial pH of aqueous solution,different initial concentrations of APAP and different dosages of TiO2 to the photolysis degradation efficiency were investigated respectively.The results show that APAP could be effectively removed in aqueous solution by this method.In the condition of pH=3.0 and 0=0.5gL-1,the APAP aqueous solution with initial concentration 30 mol·L-1 reaches a degradation efficiency at 59.1% when irradiated for 60mins.The photodegradation efficiency of APAP was affected by the factors including pH of solution,dosage of TiO2 and initial concentration of APAP.更多还原