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首页> 外文会议>International Congress and Exhibition on Arsenic in the Environment >Arsenic oxidation by hypertolerant Bacillus sp.L-148 in artificial groundwater microcosm
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Arsenic oxidation by hypertolerant Bacillus sp.L-148 in artificial groundwater microcosm

机译：砷通过人造地下水微观的高级杆菌杆菌SP.L-148氧化

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A microcosm mimicking artificial groundwater harboring high (75 mM) AS(III) concentration was developed to study the rate of arsenic oxidation by Bacillus sp.L-148 under different conditions.Na.acetate and glucose as carbon sources were used along with and/or absence of Fe ions.Morphological studies revealed elongation of 75 mM As(III) exposed bacteria along with terminal spore formation.Decrease in pH with time and As(V) formation was seen.Maximum 77% oxidation in presence of Na.acetate and Fe ions on 15th day was seen.Growth studies were in analogy with As oxidation studies.Microcosm for As oxidation in presence of 0.4 mM mixture of heavy metals Cd,Co,Pb,Li,As(III),As(V),Sb was studied.Effect of heavy metals on growth and As(III) oxidation was assessed.Contrastingly,here glucose served as a better carbon source but completely oxidized As(III).Thus,this microcosm study concluded that Bacillus sp.L-148 can be used for bioremediation of heavy arsenic contaminated site along with presence of other heavy metals.
机译：正在开发一种微观地模仿含有高（75毫米）浓度的人造地下水，以研究芽孢杆菌SP.L-148在不同条件下砷氧化的速率。随着碳源一起使用和/的乙酸和葡萄糖。和/或不存在Fe ICE.形成伸长的75mm作为（iii）暴露的细菌的伸长率以及末端孢子形成。在时间和（v）的形成中，在Na.Cetate的情况下，最大77％的氧化。第15天的Fe离子。Growth研究与氧化研究类似于氧化研究。作为氧化在0.4mm的重金属Cd，Co，Pb，Li，As（iii）的混合物中，如（v），sb的存在下氧化。已经研究过重金属对生长和（III）氧化的影响。葡萄糖作为更好的碳源，但完全被氧化为（iii）.thus，这种微观研究得出结论，芽孢杆菌sp.l-148可以用于重型砷污染遗址的生物修复以及Presenc E其他重金属。

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