Waste heat-activated persulfate degradation of dye wastewater

摘要：

Due to its high-temperature nature, high-temperature dyeing wastewater is a major challenge for treatment. In this paper, using the high thermal energy of high-temperature printing and dyeing wastewater to activate persulfate (PS) for dye treatment was investigated. Acid orange 7 (AO7) was chosen as a model compound. The result shows that increasing the temperature or PS concentration is beneficial to AO7 degradation. Radical quenching tests suggest that the sulfate radical (SO4 ·) plays a dominant role in degradation process. Maximum AO7 degradation occurs at pH 7. Lowering or increasing pH results in a great decrease in AO7 degradation rates. The absorption spectra of remaining AO7 (PS/AO7 molar ratio of 100/1, 70∩) shows nearly non-absorption at ultraviolet zone. And the TOC removal at the same condition is 81.3%. Those results indicate that PS could not only decolorize AO7 but effectively mineralize it.

作者: Ping Wang Shiying Yang Liang Shan Xin Yang Wenyi Zhang Xueting Shao Rui Niu

作者单位: Key Laboratory of Marine Environment and Ecology,Ministry of Education,Qingdao 266100, China College College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China

会议类型: 国际会议

会议名称: The 4th International Conference on Bioinformatics and Biomedical Engineering(第四届IEEE生物信息与生物医学工程国际会议 iCBBE 2010)

会议地点: 成都

会议语种:英文

页码: 1-4

在线出版日期: 2010-06-18（万方平台首次上网日期，不代表论文的发表时间）