Decolorization of various azo dyes by bacterial consortium
Decolorization of various azo dyes by bacterial consortium
复制标题
DOI：
10.1016/j.dyepig.2004.10.008
复制
发表时间：
2005-10-01
影响因子：
4.5
通讯作者：
Chimni, SS
中科院分区：
文献类型：
--
作者：
Khehra, MS;Saini, HS;Chimni, SS
这项研究的目的是富集和分离能够对从当地纺织工业废物处理场收集的土壤/污泥样品中存在的偶氮染料进行脱色的细菌菌株。四种细菌分离株被鉴定为蜡状芽孢杆菌 (BN-7)、恶臭假单胞菌 (BN-4)、荧光假单胞菌 (BN-5) 和嗜酸寡养单胞菌 (BN-3)，能够完全脱色 C.I.酸性红 88 (AR-88) 用于开发命名为 HM-4 的联合体。这些分离株的协同代谢活性导致 AR-88 (20 mg L-1) 在 24 小时内完全脱色，而单个培养物需要 60 小时以上才能实现添加染料的完全脱色。除了 AR-88 之外，该联盟还筛选了其对不同浓度的其他常用偶氮染料脱色的能力。它能够使 78% 的 C.I. 脱色。 AcidRed 88，C.I. 的 99%酸性红 119，C.I. 94%酸性红 97，C.I. 99%酸性蓝 113 和 82% C.I.活性红 120 染料在初始浓度为 60 mg L-1 的矿物盐介质 (MSM) 中反应 24 小时。该联盟将用于开发生物反应器，以实现含有偶氮染料混合物的纺织工业废水的有效脱色。 (c) 2004 Elsevier Ltd. 保留所有权利。
This study was taken up to enrich and isolate bacterial strains capable of decolorizing azo dyes present in soil/sludge samples collected from waste disposal sites of local textile industries. Four bacterial isolates identified as Bacillus cereus (BN-7), Pseudomonas putida (BN-4), Pseudomonas fluorescence (BN-5) and Stenotrophomonas acidaminiphila (BN-3) capable of completely decolorizing C.I. Acid Red 88 (AR-88), were used to develop consortium designated HM-4. The concerted metabolic activity of these isolates led to complete decolorization of AR-88 (20 mg L-1) in 24 h, whereas individual cultures took more than 60 h to achieve complete decolorization of the added dye. The consortium was screened for its ability to decolorize different concentrations of other commonly used azo dyes in addition to AR-88. It was able to decolorize 78% of C.I. AcidRed 88, 99% of C.I. Acid Red 119, 94% of C.I. Acid Red 97, 99% of C.I. Acid Blue 113 and 82% of C.I. Reactive Red 120 dyes at an initial concentration of 60 mg L-1 of mineral salts medium (MSM) in 24 h. This consortium will be used to develop bioreactor for achieving effective decolorization of textile industry effluent containing mixture of azo dyes. (c) 2004 Elsevier Ltd. All rights reserved.