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零价铁/硫酸盐还原菌还原U(Ⅵ)的试验研究

Experimental research on reduction of U(Ⅵ) by zero-valence iron/sulfate-reducing bacteria
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摘要 分别进行零价铁、零价铁和SRB还原U(Ⅵ)试验,以了解其特性。结果表明,零价铁浓度小于10 g/L时,U(Ⅵ)的去除率小于或等于0.72%。6 g/L零价铁+SRB还原U(Ⅵ)去除率比SRB单独还原U(Ⅵ)提高0.38%,达到92.1%。试验结果还表明,零价铁对SRB还原U(Ⅵ)具有协同作用,温度和协同作用成负相关性,当温度大于35℃时,没有协同作用。 The tests of U(Ⅵ)reduction by zero-valence iron and by zero-valence iron together with SRB were carried out respectively in order to know about its characteristics. The results indicated that the removal rate of U(Ⅵ) was less than or equal to 0.72% when the density of zero-valence iron was lower than 10 g/ L, while the removal rate of U(Ⅵ) through SRB and zero-valence iron of 6 g/L increased 0.38% and it was up to 92.1%. It also showed that the zero-valence iron has synergy effect with SRB reducing U(Ⅵ). Temperature and synergy effect are negative correlative,there is no synergy effect when the temperature is more than 35℃.
出处 《工程建设》 2010年第3期52-55,共4页 Engineering Construction
关键词 零价铁 SRB 还原 污染 zero-valence iron SRB reduction U(Ⅵ) pollution
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