Influences of a Humic Acid on Potassium Monopersulfate Oxidation of 2,4,6-Tribromophenol by a SiO2-Supported Iron(Ⅲ)-Porphyrin Catalyst

摘要：

　　2,4,6-Tribromophenol (TrBP),a widely used brominated flame retardant,functions as an endocrine disruptor.In the present study,an iron(Ⅲ)-5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin was immobilized onto a functionalized silica gel.To investigate the effect of humic acid (HA) on the catalytic oxidation of TrBP,the influence of solution pH was measured.In the absence of HA,the degradation efficiency was not affected by the pH,while debromination was enhanced at pH 5-7 in the presence of HA.In addition,influence of the HA concentration was investigated at pH 7,and the pseudo-first-order rate constant decreased with an increase in HA concentration.However,more than 95% of degradation of TrBP was possible,if HA concentration was below 50 mg L-1.

关键词： 2,4,6-Tribromophenol Iron(Ⅲ)-Porphyrin Humic acid Catalytic oxidation SiO2-support

作者: Qianqian Zhu Yusuke Mizutani Shouhei Maeno Masami Fukushima

作者单位: Laboratory of Chemical Resource,Division of Sustainable Resource Engineering,Graduate school of Engineering of Hokkaido University,Sapporo 060-8628,Japan

会议类型: 国际会议

会议名称: the 16th Meeting of the International Humic Substances Society (第十六届国际腐殖物质学会大会(IHSS 16))

会议地点: 杭州

会议语种:英文

页码: 344-346

在线出版日期: 2012-09-09（万方平台首次上网日期，不代表论文的发表时间）