文献类型： 会议论文

第一作者： Ke-Liang Pan

作者： Ke-Liang Pan ¹ ; Pei-Jiang Zhou ¹ ; Ting He ¹ ; Xuan He ¹ ;

作者机构： 1.School of Resources and Environmental Sciences,Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory,Wuhan University,Wuhan 430079,China

关键词： Redox Mediators;Azo Dyes;Photosynthetic Bacteria;Riboflavin;catalyst

会议名称： International conference on pollution ecology

主办单位：

页码： 12-12

摘要： Photosynthetic bacteria(PSB) is widely used in degradation of organic wastewater.However,due to the low oxidation-reduction potential of the azo dyes,PSB can not degrade azo dyes efficiently.In that case a synthesis of a novel riboflavinyl-sulfosalicylic acid-carboxylate ester-iron(Ⅱ) complexes (RF-SA-Fe) was reported.The structures of the RF-SA-Fe was analyzed by Fourier transform infrared(FTIR) spectroscopy.The activity and selectivity of the redox catalysts of the electrochemical properties was investigated by the HMDE and cyclic voltammetry method.Due to the presence of the ligand Fe(Ⅱ),the RF-SA-Fe has a larger steric hindrance.Compared with the traditional redox mediators such as riboflavin(RE) or anthraquinone-2-sulfonate (AQS),the novel redox mediator is more stable in solutions or illumination and it can not easily be degraded by PSB.Because of the strongly hydrophilic,the RF-SA-Fe has a higher decolorization efficiency than traditional redox mediators.It also has a higher electron transfer rate than RF and AQS.Under illumination aerobiosis,the system of Rhodopseudomonas palustris-Redox mediator degraded up to 150mg/L Orange Ⅱ within 48h.It's almost 3 times faster than catalyze by riboflavin and 4 times faster than non-catalyst in the same microbial system.It's economical and efficient to realize contaminant reduction.

分类号： q958.116