CAJ | 학술논문

采用负载纳米TiO_2的三维镍网装配了光催化反应器,就其对酸性品红溶液进行脱色效果进行了实验研究.考察了反应器的3种装配条件、品红初始浓度、pH值、H_2O_2投加量、紫外光剂量等因素对酸性品红脱色效果的影响.结果表明:UV灯+镍网+TiO_2模式组合的反应器脱色效果最好;在相同的处理时间内酸性品红溶液的脱色率随起始浓度的增大而减小;将酸性品红溶液pH值调至5时脱色效果最明显,70 min的脱色率可高达94.8%.脱色效果还可以通过溶液中添加H_2O_2和控制紫外线剂量来调节.当溶液中H_2O_2投加量为0.5g/L时,处理70 min后的脱色率可高达98.3%;到达反应界面紫外光剂量越多则能够获得越高的酸性晶红脱色率.
채용부재납미TiO_2적삼유얼망장배료광최화반응기,취기대산성품홍용액진행탈색효과진행료실험연구.고찰료반응기적3충장배조건、품홍초시농도、pH치、H_2O_2투가량、자외광제량등인소대산성품홍탈색효과적영향.결과표명:UV등+얼망+TiO_2모식조합적반응기탈색효과최호;재상동적처리시간내산성품홍용액적탈색솔수기시농도적증대이감소;장산성품홍용액pH치조지5시탈색효과최명현,70 min적탈색솔가고체94.8%.탈색효과환가이통과용액중첨가H_2O_2화공제자외선제량래조절.당용액중H_2O_2투가량위0.5g/L시,처리70 min후적탈색솔가고체98.3%;도체반응계면자외광제량월다칙능구획득월고적산성정홍탈색솔.
A photocatalytic reactor using three dimisions nickel-net coated with nanometer TiO_2 was e-quipped and its decoloration effect for acid fuchsine ( AF) was studied. A few influencing factors to the decolora-tion efficiency were investigated, which included the configuration of UV light, nickel-net coated with and with-out nanometer TiO_2 in the reactor, initial concentration of AF, pH value of the solution, added amount of H_2O_2 and ultraviolet light( UV) dosage. Resuks indicated that the combined mode of UV + nickel-net + TiO_2 is the optimal experimental condition. Decoloration rate will decline with increase of the initial AF concentration after a same treatment period. The maximum decoloration rate for AF solution can be gotten under the condition of pH = 5, which can reach up to 94. 8% in 70 min. The decoloration effect can also be controlled by added amout of H_2O_2 to the solution and the UV light dosage. When the content of H_2O_2 is 0. 5 g/L, the decoloration rate can reach up to 98. 3 % in 70 min; the more UV dosage reached to the reaction interface, the higher decoloration effi-ciency can be gotten.