| 草酸青霉SL2对高浓度铬污染土壤的生物淋洗及胞内铬形态转化研究 |
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| 引用本文： | 叶斌晖,罗亚婷,龙碧波,刘青林,施积炎.草酸青霉SL2对高浓度铬污染土壤的生物淋洗及胞内铬形态转化研究[J].环境科学学报,2018,38(7):2825-2832. |
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| 作者姓名： | 叶斌晖 罗亚婷 龙碧波 刘青林 施积炎 |
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| 作者单位： | 浙江大学环境与资源学院 |
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| 基金项目： | 国家自然科学基金（No.U1532103，41721001） |
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| 摘 要： | 铬渣无序堆存造成的铬污染土壤迫切需要修复治理.本文以新筛选的功能微生物草酸青霉SL2(Penicillium oxalicum SL2)为材料,以重度铬污染土壤为研究对象,进行生物淋洗技术优化,并利用软X射线扫描透射显微光谱技术(STXM)及同步辐射X射线近边吸收结构谱学(XANES)分析淋洗后的草酸青霉SL2胞内铬空间分布化学形态.结果表明:分步处理并进行水洗预处理可明显提高草酸青霉SL2对高浓度铬污染土壤的总铬TCr淋出率(49.4%),淋出液中Cr(VI)在3 d内全部被还原;生物淋洗后,草酸青霉SL2胞内吸收累积了Cr(VI),部分被还原为Cr(III),两个价态的Cr在空间分布上具有一定的一致性;胞内铬形态主要为磷酸铬、草酸铬钾及半胱氨酸铬类化合物,其含量分别为46.9%、33.0%和20.1%.
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| 关 键 词： | 草酸青霉SL2 铬 土壤 生物淋洗 形态转化 |
| 收稿时间： | 2017/12/31 0:00:00 |
| 修稿时间： | 2018/1/29 0:00:00 |
Research on bioleaching of soils contaminated by high concentration of chromium with Penicillium oxalicum SL2 and the intracellular speciation transformation of chromium |
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| YE Binhui,LUO Yating,LONG Bibo,LIU Qinlin and SHI Jiyan.Research on bioleaching of soils contaminated by high concentration of chromium with Penicillium oxalicum SL2 and the intracellular speciation transformation of chromium[J].Acta Scientiae Circumstantiae,2018,38(7):2825-2832. |
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| Authors: | YE Binhui LUO Yating LONG Bibo LIU Qinlin and SHI Jiyan |
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| Institution: | College of Environmental & Resources Sciences, Zhejiang University, Hangzhou 310058,College of Environmental & Resources Sciences, Zhejiang University, Hangzhou 310058,College of Environmental & Resources Sciences, Zhejiang University, Hangzhou 310058,College of Environmental & Resources Sciences, Zhejiang University, Hangzhou 310058 and College of Environmental & Resources Sciences, Zhejiang University, Hangzhou 310058 |
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| Abstract: | |
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| Keywords: | Penicillium oxalicum SL2 chromium soils bioleaching speciation transformation |
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