漳州师范学院学报：自然科学版
漳州師範學院學報：自然科學版
장주사범학원학보：자연과학판
Journal of ZhangZhou Teachers College（Natural Science)
2011年
2期
52-57
,共6页
纳米TiO2%Langmuir-Hinshelwood%造纸废水%COD
納米TiO2%Langmuir-Hinshelwood%造紙廢水%COD
납미TiO2%Langmuir-Hinshelwood%조지폐수%COD
nano-TiO2%langmuir-hinshelwood%papermaking wastewater%COD removal rate
以四异丙醇钛和异丙醇等为原料,采用溶胶□凝胶（Sol-Gel）法制备纳米TiO2光催化剂,研究了纳米TiO2对造纸废水的暗吸附规律和光降解性能.讨论了不同实验条件如催化剂用量、光照时间及废水pH值等因素对制浆造纸废水COD去除率的影响.结果表明：纳米TiO2对造纸废水的吸附规律都较好地符合Langmuir和Freundlich吸附等温模型;光催化降解反应遵循Langmuir-Hinshelwood动力学模型.焙烧温度为400℃,焙烧时间2h制备的纳米TiO2用量5g/L,pH=2,160W高压汞灯光照反应2h,造纸废水COD的去除率可达91.83%.
以四異丙醇鈦和異丙醇等為原料,採用溶膠□凝膠（Sol-Gel）法製備納米TiO2光催化劑,研究瞭納米TiO2對造紙廢水的暗吸附規律和光降解性能.討論瞭不同實驗條件如催化劑用量、光照時間及廢水pH值等因素對製漿造紙廢水COD去除率的影響.結果錶明：納米TiO2對造紙廢水的吸附規律都較好地符閤Langmuir和Freundlich吸附等溫模型;光催化降解反應遵循Langmuir-Hinshelwood動力學模型.焙燒溫度為400℃,焙燒時間2h製備的納米TiO2用量5g/L,pH=2,160W高壓汞燈光照反應2h,造紙廢水COD的去除率可達91.83%.
이사이병순태화이병순등위원료,채용용효□응효（Sol-Gel）법제비납미TiO2광최화제,연구료납미TiO2대조지폐수적암흡부규률화광강해성능.토론료불동실험조건여최화제용량、광조시간급폐수pH치등인소대제장조지폐수COD거제솔적영향.결과표명：납미TiO2대조지폐수적흡부규률도교호지부합Langmuir화Freundlich흡부등온모형;광최화강해반응준순Langmuir-Hinshelwood동역학모형.배소온도위400℃,배소시간2h제비적납미TiO2용량5g/L,pH=2,160W고압홍등광조반응2h,조지폐수COD적거제솔가체91.83%.
The photocatalyst of nano-TiO2 was prepared by sol-gel method.The influences of amount of catalyst,radiation time and pH value on the photocatalytic degradation of papermaking wastewater on nano-TiO2 were studied.The adsorption and photocatalytic oxidation proceses of wastewater from papermaking on nano-TiO2 were studied.The results indicate that the adsorption law of wastewater from papermaking on nano-TiO2 fit in well with the Langmuir model and Freundlich model.The optimal experimental conditions were obtained： calcination temperature 400℃,calcination time 2.0 h,amount of catalyst 5g/L,pH value of papermaking wastewater 2.0,and radiation time 2.0 h,the COD removal rate of papermaking wastewater reached 91.83%.The photodegradation fits in with Langmuir-Hinshelwood kinetic mode.
