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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Detoxification and Bioremediation Potential of a Pseudomonas fluorescens Isolate against the Major Indian Water Pollutants
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Detoxification and Bioremediation Potential of a Pseudomonas fluorescens Isolate against the Major Indian Water Pollutants

机译：荧光假单胞菌分离物对印度主要水污染物的解毒和生物修复潜力

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摘要

A Pseudomonas fluorescens strain was isolated from the soil of industrial estate of Aligarh, India. This strain was resistant to some of the major Indian water pollutants, namely Cd~(2+), Cr~(6+), Cu~(2+), Ni~(2+), Pb~(2+), BHC, 2,4-D, mancozeb and phenols up to the levels occurring in the highly polluted regions. Moreover, the test strain seems to have a great potential for the detoxification of these pollutants. The decrease in toxicity as determined by the Allium cepa test was recorded as 62.5% for the model water containing the mixture of test heavy metals, 71.9% for the pesticides, 73.2% for phenols, and 58.5% for combination of all these toxicants. These values were obtained after 24 hours, exposure to the immobilized cells of the test isolate in the calcium alginate matrix at the concentrations of these polutants supposedly present in the highly polluted water systems in India. The efficiency of bioremediation for certain heavy metals at the same concentrations by means of immobilized cells of the test Pseudomonas fluorescens isolate was estimated to be 75.9% for cadmium, 74.2% for hexavalent chromium and 61.0% for lead during the 24 hours' treatment. In view of the preliminary work, the test isolate seems to be a good candidate for the bioremediation of water pollutants.
机译：从印度阿里加尔的工业区土壤中分离出荧光假单胞菌菌株。该菌株对一些主要的印度水污染物具有抗性，即Cd〜（2 +），Cr〜（6 +），Cu〜（2 +），Ni〜（2 +），Pb〜（2 +），BHC ，2,4-D，代森锰锌和苯酚的含量一直到高污染地区。此外，该测试菌株似乎具有排解这些污染物的巨大潜力。由葱属cepa试验确定的毒性降低记录为：含有测试重金属混合物的模型水为62.5％，农药为71.9％，苯酚为73.2％，所有这些有毒物质的组合为58.5％。这些值是在24小时后暴露于海藻酸钙基质中测试分离物的固定化细胞中获得的，假定这些污染物的浓度据说存在于印度高污染的水系统中。在24小时的处理过程中，通过固定的荧光假单胞菌分离物细胞对相同浓度的某些重金属进行生物修复的效率估计为：镉为75.9％，六价铬为74.2％，铅为61.0％。鉴于初步工作，测试隔离株似乎是水污染物生物修复的良好候选者。

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