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Decolorization of dyestuffs by some species of green algae and cyanobacteria and its consortium
International Journal of Environmental Science and Technology ( IF 3.1 ) Pub Date : 2021-01-06 , DOI: 10.1007/s13762-020-03108-x
M. M. El-Sheekh , A. R. El-Shanshoury , G. W. Abou-El-Souod , D. Y. Gharieb , S. M. El Shafay

Synthetic dyes are scattered in untreated or inappropriately treated effluents, and their dangerous items created during the halfway corruption are released into the water bodies that cause a horrendous smell, which prompts anomalous changes in the nature of water. In the present study, green algae and cyanobacteria are considered as a significant hotspot for decolorizing color and material gushing. Chlorococcum sp., Scenedesmus obliquus, Chlorella vulgaris, and Oscillatoria sp. were investigated for degradation and removal of some azo dyes [Reactive Orange 122 (Orange 2RL) and Reactive Red 194 (Reactive Red M-2BF)]. The results showed that the maximum decolorization was spotted at 20 ppm Reactive Orange 122 with Oscillatoria sp. mixed with S. obliquus (98.54%). 20 ppm Reactive Red 194 was decolorized by Oscillatoria sp. mixed with S. obliquus (97.58%) after 7 days of incubation. The decolorization was detected by spectroscopic analysis and Fourier transformed infrared (FTIR) spectroscopy. The suitable factors that accelerated the azo dye decolorization and enhanced the biological treatment methods to be more effective and speedier in decolorization were investigated. At 25 °C and continuous lighting, the highest percentage of the azo dye decolorization was obtained; BG11 was the suitable medium that gives a high percentage of the azo dye decolorization. However, relative to the effect pH on azo dye decolorization, results show pH 11 and pH 9 more effective on azo dye decolorization for Reactive Orange 122 and Reactive Red 194, respectively. A total of 6% of thiamine and ascorbic acid recorded maximum degradation activity at Reactive Orange 122 when treated with Oscillatoria sp. mixed with S. obliquus 79.13% and 77.18%, respectively.



中文翻译:

某些藻类和蓝细菌及其财团对染料的脱色

合成染料散布在未经处理或未经适当处理的废水中,其在中途腐烂过程中产生的危险物品被释放到水体中,引起可怕的气味,从而促使水质发生异常变化。在本研究中,绿藻和蓝细菌被认为是使颜色和物质涌出变色的重要热点。绿球藻,斜生小球藻藻。对某些偶氮染料的降解和去除进行了研究[活性橙122(橙色2RL)和活性红194(活性红M-2BF)]。结果显示最大脱色点为20 ppm活性橙122Oscillatoria sp。与斜叶葡萄球菌(98.54%)混合。Oscillatoria sp。将20 ppm活性红194脱色。与斜纹葡萄球菌混合(77.58%)培养7天后。通过光谱分析和傅里叶变换红外(FTIR)光谱检测脱色。研究了促进偶氮染料脱色并提高生物处理方法脱色更有效和更快的合适因素。在25°C和连续照明下,偶氮染料的脱色率最高。BG11是合适的介质,可使偶氮染料脱色率很高。但是,相对于pH对偶氮染料脱色的影响,结果表明pH 11和pH 9分别对活性橙122和活性红194的偶氮染料脱色更有效。当用6%的硫胺素和抗坏血酸处理时,在活性橙122上表现出最大的降解活性Oscillatoria sp。与斜生葡萄球菌分别混合,分别为79.13%和77.18%。

更新日期:2021-01-06
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