Treatment of Cr(VI) contaminated water with Pannonibacter phragmitetus BB
Treatment of Cr(VI) contaminated water with Pannonibacter phragmitetus BB
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DOI：
10.1007/s12665-013-2827-8
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发表时间：
2014-05
影响因子：
2.8
通讯作者：
Yangyang Wang;B. Peng;Zhihui Yang;Chong-jian Tang;Yuehui Chen;Q. Liao;Ying-ping Liao
中科院分区：
文献类型：
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作者：
Yangyang Wang;B. Peng;Zhihui Yang;Chong-jian Tang;Yuehui Chen;Q. Liao;Ying-ping Liao
利用芦苇丛膜菌BB处理六价铬[Cr（VI）]污染水体。污染水（pH 10.85）中Cr（VI）浓度为534 mg/L。当接种量为1 ~ 20%时，当培养基初始浓度超过20 g/L时，芦苇芽孢杆菌BB在27 h内完全降解Cr（VI）。Cr（VI）诱导细胞的生物还原滞后时间为24 h，比未诱导细胞的生物还原滞后时间长。在搅拌条件下，存在明显的生物还原滞后期，Cr（VI）在24 h内被完全还原。而在静态条件下没有观察到滞后期，接种后Cr（VI）持续还原，培养27 h后Cr（VI）完全还原。Cr（VI）还原后的主要铬组分为Cr（OH）3、Cr2 O3和CrCl 3。本研究结果对芦苇BB处理Cr（VI）污染水体具有重要的指导意义。
Pannonibacter phragmitetus BB was utilized to treat hexavalent chromium [Cr(VI)] contaminated water. Cr(VI) concentration of the contaminated water (pH 10.85) was 534 mg/L. With the inoculum size ranging from 1 to 20 %, P. phragmitetus BB completely reduced Cr(VI) within 27 h when the initial medium concentration exceeded 20 g/L. The lag time of bio-reduction by Cr(VI)-induced cells was 24 h, which was longer than the non-Cr(VI)-induced cells. Under the agitation condition, an obvious bio-reduction lag phase existed and Cr(VI) was completely reduced within 24 h. However, the lag phase was not observed under the static condition, Cr(VI) was reduced continuously after inoculation and Cr(VI) was completely reduced after 27 h incubation. The main chromium components after Cr(VI) reduction were Cr(OH)3, Cr2O3 and CrCl3. The results of this study are fundamentally significant to the application of P. phragmitetus BB in the treatment of Cr(VI) contaminated water.