| 好氧砷还原菌对吸附态砷迁移转化的影响 |
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| 引用本文： | 康英, 段晋明, 吴琼, 田海霞. 好氧砷还原菌对吸附态砷迁移转化的影响[J]. 环境工程学报, 2015, 9(5): 2079-2083. doi: 10.12030/j.cjee.20150508 |
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| 作者姓名： | 康英 段晋明 吴琼 田海霞 |
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| 作者单位： | 1. 西安建筑科技大学环境与市政工程学院, 西安 710055; 2. 中国科学院生态环境研究中心, 北京 100085 |
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| 基金项目： | 国家自然科学基金资助项目(41373123) |
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| 摘 要： | 利用静态和动态土柱实验初步研究了好氧砷还原菌Bacillus sp. SXB在砷迁移转化过程中的作用。结果表明,在静态实验中,菌株SXB可以有效还原吸附在针铁矿上的五价砷;在动态土柱实验中,由于原土中砷是以三价砷形式存在,因此,不论是空白对照还是菌株SXB加入处理,出水中砷均为三价砷;当孔隙体积大于100时,铁的溶出开始增加。菌株SXB的加入,轻微地促进了土壤中砷的释放,而对铁的释放并没有明显影响。
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| 关 键 词： | 好氧砷还原菌 Bacillus sp.SXB 针铁矿 土壤 转化 |
| 收稿时间： | 2014-08-21 |
Transformation of adsorbed arsenate affected by aerobic bacterium |
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| Kang Ying, Duan Jinming, Wu Qiong, Tian Haixia. Transformation of adsorbed arsenate affected by aerobic bacterium[J]. Chinese Journal of Environmental Engineering, 2015, 9(5): 2079-2083. doi: 10.12030/j.cjee.20150508 |
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| Authors: | Kang Ying Duan Jinming Wu Qiong Tian Haixia |
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| Affiliation: | 1. School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; 2. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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| Abstract: | The batch and column experiments were applied to investigate the adsorbed arsenic mobilization affected by an aerobic bacterium Bacillus sp. SXB. The results showed that in the batch experiment, strain SXB could reduce the arsenate adsorbed on the goethite. In the soil column experiment, the arsenic speciation in the effluent was arsenite in the treatment with and without strain SXB. It's because that the arsenic speciation in the raw soil was arsenite. The iron began to leach when the pore volume was larger than 100. The addition of strain SXB to the soil could slightly enhance the release of arsenic from the soil and had no significant effect on the Fe release. |
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| Keywords: | aerobic arsenate reducing bacterium Bacillus sp.SXB goethite soil transformation |
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