Degradation of Amino Acids in Water by Ferrate(VI)
Amino acids, which are degradation product of proteinaceous matter, can be found in significant concentrations in water sources. Amino acids may thus be precursors of undesirable disinfection byproducts formed during the treatment of water. Oxidants such as chlorine, chlorine dioxide, and ozone have been studied to oxidize amino acids, but may result in products which are toxic to the aquatic environment and to human populations, Iron in a +6 valence state, ferrate(VI) as FeVIO4 2- (Fe(VI)) can degrade amino acids have no disadvantages commonly found in conventional oxidative treatments. Fe(VI) has high oxidizing power and forms a non-toxic byproduct, Fe(Ⅲ), which acts as a coagulant. Fe(VI) is thus an environmental friendly technology for degradation of amino acids in water and wastewater. This paper presents the results on the oxidation of amino acids as a function of pH at 25℃. Examples of aliphatic and aromatic amino acids are given. Generally, the oxidation rates decrease with increase in pH in basic pH range. The protonation species of ferrate(VI) and amino acids are responsible for oxidation rates. The possible products of the oxidation by ferrate(VI) are discussed. Overall, The results showed that ferrate(VI) can rapidly degrade amino acids and microcystins in water.
ferrate amino acids degradation
Erik CASBEER Nadine NOORHASAN Bhavesh PATEL Virender K.SHARMA
Chemistry Department,Florida Institute of Technology,150 West University Boulevard,Melbourne,Florida 32901,USA
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
1171-1175
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）