用硫酸盐还原菌去除废水中锑的实验研究
Removal of Antimony in Synthetic Wastewater by Sulfate-reducing Bacteria
查看参考文献25篇
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文摘
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用硫酸盐还原菌(SRB)去除模拟废水中的Sb,对比不同pH值、温度及Sb初始浓度的去除效果和不同反应时间内各因子(Sb、SO_4~(2-)、pH、Eh及OD)的动态变化。结果表明:反应的最佳pH 范围为6.0~7.0,温度范围为30~35℃,去除率均可达到90%以上。随着SRB的繁殖,溶液的pH值升高,SO_4~(2-)被还原为H2S,导致SO_4~(2-)及Eh降低。Sb(Ⅴ)被还原为Sb (Ⅲ),Sb(Ⅲ)再与H_2S反应生成Sb_2S_3沉淀,这一机制使得溶液中Sb被去除。 |
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其他语种文摘
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The removal of Sb in wastewater by sulfate-reducing bacteria was conducted.The effects of pH,temperature and the initial Sb concentration as well as the evolution of the reaction were evaluated.The results showed that the optimal pH range was 6.0~7.0and the optimal temperature was 30~35℃.The removal of Sb was more than 90%.In the reaction,organic carbon was converted to HCO_3~- and SO_4~(2-) was reduced to H2S,resulting in the decrease of SO_4~(2-) and Eh.In the meantime, Sb(Ⅴ)was reduced to Sb(Ⅲ),which reacted with H2S and was precipitated as Sb_2S_3.This mechanism resulted in the removal of Sb in wastewater. |
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来源
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地球与环境
,2014,42(5):663-668 【核心库】
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关键词
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硫酸盐还原菌
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废水
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锑
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去除
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地址
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中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-9250 |
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学科
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行业污染、废物处理与综合利用 |
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基金
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本研究受中国科学院一·三·五项目资助
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国家自然科学基金项目
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文献收藏号
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CSCD:5267613
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