Decolorization of anthraquinone dye by Shewanella decolorationis S12
Decolorization of anthraquinone dye by Shewanella decolorationis S12
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DOI：
10.1007/s00253-005-0144-1
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发表时间：
2006-06
影响因子：
5
通讯作者：
Meiying Xu;Jun Guo;Guo-qu Zeng;Xiaoyan Zhong;G. Sun
中科院分区：
文献类型：
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作者：
Meiying Xu;Jun Guo;Guo-qu Zeng;Xiaoyan Zhong;G. Sun
希瓦氏菌属新种Shewanella decolorationisS12是从某纺织印染废水处理厂活性污泥中提取的，可对蒽醌类染料活性艳蓝K-GR进行先絮凝脱色。虽然S.在有氧条件下脱色生长良好，在厌氧条件下脱色效果最好。对于脱色，厌氧培养下最合适的 pH 值和温度为 pH 6.0-8.0 和 30-37°C。当染料浓度为 50 mg/l 时，超过 99% 的活性艳蓝 K-GR 在 15 小时内被脱色。乳酸是染料脱色的合适碳源。金属化合物 HgCl2 对活性艳蓝 K-GR 的脱色有抑制作用，但在 HgCl2 浓度为 10 mg/l 时也能观察到几乎完全脱色。介导测试染料脱色的酶活性并未受到细菌对染料的预适应的显着影响。
A new species of genusShewanella,Shewanella decolorationisS12, from activated sludge of a textile-printing wastewater treatment plant, can decolorize Reactive Brilliant Blue K-GR, one kind of anthraquinone dye, with flocculation first. AlthoughS. decolorationisdisplayed good growth in an aerobic condition, color removal was the best in an anaerobic condition. For color removal, the most suitable pH values and temperatures were pH 6.0–8.0 and 30–37°C under anaerobic culture. More than 99% of Reactive Brilliant Blue K-GR was removed in color within 15 h at a dye concentration of 50 mg/l. Lactate was the suitable carbon source for the dye decolorization. A metal compound, HgCl2, had the inhibitory effect on decolorization of Reactive Brilliant Blue K-GR, but a nearly complete decolorization also could be observed at a HgCl2concentration of 10 mg/l. The enzyme activities, which mediate the tested dye decolorization, were not significantly affected by preadaptation of the bacterium to the dye.