%0 Journal Article
%T Degradation kinetics of wastewater from papermaking on nanosized titanium dioxide surface modified with Methylene Blue<br>亚甲基蓝表面修饰纳米TiO2降解造纸废水动力学
%A Huang Yang
%A Li Shunxing
%A Fu Biyu
%A <br>黄泱
%A 李顺兴
%A 傅碧玉
%J 环境工程学报
%D 2012
%I 
%X Nanometer size titanium dioxide modified with Methylene Blue(TiO2-MB)was prepared using chemical adsorption method.Through surface modification,the formation of TiO2-MB results in a red shift of UV-Vis reflectance spectra,towards the visible region,up to 575 nm.The influences of amount of catalyst,irradiation time and pH value on the photocatalytic degradation of papermaking wastewater on TiO2-MB were also studied.The adsorption and photocatalytic oxidation proceses of wastewater from papermaking on nano-TiO2-MB were studied.The results indicate that the adsorption law of wastewater from papermaking on nano-TiO2-MB fit in well with the Langmuir model and Freundlich model.Thermodynamic study showed the adsorption was an endothermic process.The photodegradation fits in with Langmuir-Hinshelwood kinetic mode.The optimal photodegradation conditions were obtained: catalyst amount of 3.0 g/L,papermaking wastewater’s pH value of 2.0,and irradiation time of 80 min with 160 W of high-pressure mercury lamp,the COD removal rate of papermaking wastewater reached 94.7%.The photodegradation efficiency was higher than the adsorption efficiency.The used photocatalyst could be used for the eighth time with high efficiency.
%K nanometer titanium dioxide
%K photodegradation
%K surface modification
%K Methylene Blue
%K paper-making wastewater<br>纳米TiO2
%K 光催化降解
%K 表面修饰
%K 亚甲基蓝
%K 造纸废水
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=A3A42DFC434F3472824750C4318817EA&yid=99E9153A83D4CB11&vid=B31275AF3241DB2D&iid=5D311CA918CA9A03&sid=B4B54538A1E05926&eid=74ECAE75869A1E38&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=0