磁性NiO复合材料光催化处理盐酸四环素废水研究  

Tetracycline hydrochloride wastewater treatment by photocatalysis using magnetic NiO composite material

作　　者：徐婷 周惠红 许媛 董翼 唐威 朱华跃[1] XU Ting;ZHOU Hui-hong;XU Yuan;DONG Yi;TANG Wei;ZHU Hua-yue(Department of Environmental Engineering,Taizhou University,Taizhou 318000,China)

机构地区：[1]台州学院环境工程系

出　　处：《工业用水与废水》2019年第6期12-15,共4页Industrial Water & Wastewater

基　　金：浙江省大学生科技创新活动计划暨新苗人才计划(2018R436009);浙江省自然科学基金(LY15E080002);台州市科技计划项目(1701hb02)

摘　　要：以γ-Fe2O3为磁源物质,六水合硝酸镍和尿素为原料,无水乙醇为溶剂,采用溶剂热法成功制备了磁性NiO(m-NiO)复合光催化剂。以盐酸四环素为目标污染物,考察了催化剂投加量、盐酸四环素初始浓度、初始pH值和重复使用次数对m-NiO复合材料可见光催化处理盐酸四环素效果的影响。结果表明,在废水体积为30mL,m-NiO复合材料投加量为1.0 g/L,pH值为8.0的条件下,10 mg/L盐酸四环素废水于氙灯光源照射70 min后,其去除率为93%。碱性环境较有利于m-NiO对盐酸四环素的光催化降解。m-NiO复合光催化剂重复使用4次后,对目标污染物的光催化去除率仍可达58%,该催化剂具有一定的光催化稳定性。Withγ-Fe2O3 as magnetic source,nickel nitrate hexahydrate and urea as raw materials,absolute ethyl alcohol as solvent,magnetic NiO(m-NiO)composite photocatalyst was successfully prepared using solvo-thermal method.Taking tetracycline hydrochloride as target pollutant,the effect of catalyst dosage,initial concentration of tetracycline hydrochloride,initial pH value and reuse times on tetracycline hydrochloride removal by photocatalysis using m-NiO composite material were investigated.The results showed that,under the condition that the wastewater volume was 30 m L,the m-NiO composite material dosage was 1.0 g/L,the pH value was 8.0,the irradiation time under xenon light source was 70 min,the removal rate of tetracycline hydrochloride was 93%.Alkaline environment was more favorable for photocatalytic treatment.The removal rate of tetracycline hydrochloride still reached 58%even when the m-NiO composite catalyst had been reused for 4 times,which showed that,the said catalyst had certain photocatalytical stability.

关 键 词：盐酸四环素 光催化 NIO Γ-FE2O3 

分 类 号：X703.1[环境科学与工程—环境工程]