钛磁铁矿异相Fenton法对亚甲基蓝模拟废水的脱色研究  

DECOLORIZATION OF METHYLENE BLUE BY HETEROGENEOUS FENTON REACTION USING TITANOMAGNETITE

作　　者：杨士建[1,2] 何宏平[1] 吴大清[1] 陈冬[3] 梁晓亮[1,2] 马月红[1,2] 袁鹏[1] 朱建喜[1] 

机构地区：[1]中国科学院广州地球化学研究所,广州510640 [2]中国科学院研究生院,北京100049 [3]合肥工业大学资源与环境学院,合肥230009

出　　处：《环境化学》2009年第5期697-701,共5页Environmental Chemistry

基　　金：国家自然科学基金(40773060);科技部863探索性计划(2006AA03Z337)资助

摘　　要：本研究运用紫外可见光谱、傅立叶转换红外光谱和13C核磁共振谱以及水相中溶解性有机碳和固相上元素碳分析等技术对钛磁铁矿异相Fenton法脱色亚甲基蓝的过程进行了研究.实验结果表明:钛磁铁矿异相Fenton法对亚甲基蓝的脱色速率远高于磁铁矿;在钛磁铁矿异相Fenton法脱色亚甲基蓝过程中,脱除的亚甲基蓝都已被降解,且钛磁铁矿没有发生相变;虽然钛磁铁矿异相Fenton法不能使亚甲基蓝矿化,但亚甲基蓝结构中的苯环已经被打开.In this study, titanomagnetite was synthesized using a soft chemical method. Then, synthetic titanomagnetite was firstly used as a new heterogeneous Fenton catalyst for the decolorization of methylene blue （MB）. As compared with magnetite, titanomagnetite showed a more excellent catalytic activity for MB decolorization. Decolorization of MB by heterogeneous Fenton reaction using titanomagnetite was studied using UV-Vis spectra, Fourier transform infrared spectroscopy（ FrIR）, ^13 C nuclear magnetic resonance spectra （ ^13 C NMR）, dissolved organic carbon（DOC）and element C analyses. During the decolorization, most of MB removed from reaction solution was degraded and the phase transformation of titanomagnetite did not happen. Although MB was not mineralized, the aromatic rings in MB were destroyed completely.

关 键 词：钛磁铁矿 合成 异相Fenton反应 亚甲基蓝. 

分 类 号：X703[环境科学与工程—环境工程]