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首页> 外文期刊>Applied Microbiology and Biotechnology >Hexavalent chromium reduction by a dichromate-resistant gram-positive bacterium isolated from effluents of tanneries
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Hexavalent chromium reduction by a dichromate-resistant gram-positive bacterium isolated from effluents of tanneries

机译：从制革厂废水中分离出来的抗重铬酸盐的革兰氏阳性细菌还原六价铬

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A gram-positive, chromium (Cr)-resistant bacterial strain (ATCC 700729) was isolated from effluent of tanneries. It was grown in media containing potassium dichromate concentration up to XO mg mi of the medium. The dichromate reducing capability of the bacterium was checked by estimating the amount of Cr VI in the medium before and after introduction of bacterial culture. The influence of factors like pH of the medium, concentration of Cr, and the amount of the inoculum was studied to determine the ability of the bacterium to reduce Cr VI in the medium under various conditions. In a medium containing dichromate 20 mg ml(-1) more than 87% reduction of dichromate ions was achieved within 72 h. The feasibility of the use of this bacterial strain for detoxification of dichromate in the industrial wastewater has been assessed. The isolated strain can be exploited for specific environmental clean-up operations. [References: 24]
机译：从制革厂的废水中分离出革兰氏阳性，耐铬（Cr）的细菌菌株（ATCC 700729）。它在含有重铬酸钾浓度高达XO mg mi的培养基中生长。通过估计引入细菌培养物之前和之后培养基中的Cr VI含量来检查细菌的重铬酸盐还原能力。研究了培养基pH，Cr浓度和接种量等因素的影响，以确定细菌在各种条件下还原培养基中Cr VI的能力。在含有20 mg ml（-1）的重铬酸盐的培养基中，重金属离子在72小时内减少了87％以上。已经评估了使用该细菌菌株对工业废水中的重铬酸盐进行解毒的可行性。分离出的菌株可用于特定的环境清理操作。 [参考：24]

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