Experimental Researches on Photoreduction of Azo Dyes in the Rutile-Cathode Bioelectrochemical System
详细信息
- 责任者：Ding Hongrui (School of Earth and Space Sciences ; Peking University ; Beijing 100871 ; China) ; Li Yan
- 刊名：Acta Petrologica et Mineralogica
- 出版年：2009
- 卷期：28(6)
- 关键词：金红石 ; rutile
- 页码：p.541-546
- 图表：6 illus., 1 table, 17 refs.
- 分类号：0700
- issnNo：ISSN1000-6524
- isbnNo：CN11-1966/P
摘要
The reductive decolorization of azo dye wastewater was investigated by using a dual-chambered bioelectrochemical cell equipped with different cathode materials (graphite and rutile-coated graphite). The results demonstrate that the cathodic electron transfer process in the irradiated rutile-cathode system is driven by the photocatalysis of rutile. Based on an analysis of decolorization products, the authors put forward a possible cathodic reaction mechanism for the photoreductive decolorization of MO, i.e., the azo bond of MO is cleaved by photoelectrons at the irradiated rutile-cathode, resulting in the formation of colorless hydrazine derivative.