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首页> 外文期刊>African Journal of Biotechnology >Enhanced Fe2+ oxidation by mixed culture originated from hot spring: Application of response surface method
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Enhanced Fe2+ oxidation by mixed culture originated from hot spring: Application of response surface method

机译：来自温泉的混合培养增强的Fe2 +氧化：响应面法的应用

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摘要

For maximum oxidation efficiency and minimum amount of jarosite, a total of 30 experimental runs were conducted and the experimental data fitted to the experimental quadratic model. The analysis of variance (ANOVA) demonstrated that the model was highly significant.?Three dimensional plots were illustrated to depict the interaction between all the factors. The experimental results indicated that, the optimal conditions for the desired objects were 1.3, 7 g/l, 141 rpm and 35°C for the media initial pH, Fe2+?ion concentration, agitation rate and temperature, respectively. Using the regression model, a maximal oxidation efficiency of 55% and minimum jarosite precipitation of 0.34 g/l were achieved with the consideration of the optimal condition for the parameters at the end of 26 days of operation. The experiment was carried out under optimal condition and resulted in efficient oxidation and jarosite amount of 52% and 0.32 g/l, respectively. Similar values were predicted by the model. According to these results, the response surface methodology was not only applied to determine the significance information on the interaction between the factors, but also was conducted at optimal conditions for the desired objectives. It was also concluded that, the mixed culture isolated from the hot spring had the potential to oxidize ferrous to ferric irons.
机译：为了获得最大的氧化效率和最少的黄钾铁矾含量，总共进行了30次实验，实验数据与实验二次模型拟合。方差分析（ANOVA）证明该模型具有很高的意义。？绘制了三维图以描绘所有因素之间的相互作用。实验结果表明，对于培养基的初始pH，Fe2 +离子浓度，搅拌速度和温度，理想目标的最佳条件分别为1.3、7 g / l，141 rpm和35°C。使用回归模型，考虑到运行26天结束时参数的最佳条件，可实现最大氧化效率55％和最小黄钾铁矾沉淀0.34 g / l。该实验是在最佳条件下进行的，有效氧化和黄铁矿用量分别为52％和0.32 g / l。该模型预测了相似的值。根据这些结果，响应面方法不仅可以用于确定有关因素之间相互作用的显着性信息，而且还可以在理想条件下实现所需目标。还得出结论，从温泉中分离出来的混合培养物具有将亚铁氧化为三价铁的潜力。

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