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Evaluation of chromium removal efficiency at varying operating conditions of a novel bioelectrochemical system

机译：新型生物电化学系统在不同操作条件下的铬去除效率评估

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The assessment of chromium removal efficiency (CRE) was studied using experimental trials with variations in operating conditions for evaluating performance efficiency of the Bioelectrochemical system (BES). During the study, maximum CRE of 88.36 +/- 8.16% was obtained at cathode pH 2 +/- 0.1 from the varied cathode pH (pH 1, 2, 3, 4, 5, 6, 7). With varying reactor temperatures from 25 to 45 degrees C (25, 30, 35, 40, 45 degrees C), BES resulted in maximum CRE of 85.93 +/- 9.62% at 40 degrees C. CRE increased from 78.50 +/- 5.24 to 88.66 +/- 8.40% with an increase in substrate concentration from 500 to 2000 mg/L chemical oxygen demand (COD). CRE decreased from 95.9 +/- 2.9 to 89.56 +/- 1.74% with an increase in initial chromium concentration from 10 to 100 mg/L. Correlation analysis revealed a positive correlation with COD reduction, COD, and temperature, whereas a negative correlation was observed for pH and initial chromium concentration.
机译：使用实验试验研究了除铬效率（CRE）的评估，该实验在不同的操作条件下用于评估生物电化学系统（BES）的性能效率。在研究期间，在阴极pH 2 +/- 0.1下，从变化的阴极pH（pH 1、2、3、4、5、6、7）获得的最大CRE为88.36 +/- 8.16％。随着反应器温度从25到45摄氏度（25、30、35、40、45摄氏度）变化，BES导致40摄氏度时的最大CRE为85.93 +/- 9.62％。CRE从78.50 +/- 5.24升高至底物浓度从500到2000 mg / L化学需氧量（COD）增加到88.66 +/- 8.40％。随着初始铬浓度从10 mg / L增加，CRE从95.9 +/- 2.9降低到89.56 +/- 1.74％。相关分析显示，COD减少，COD和温度呈正相关，而pH和初始铬浓度则呈负相关。

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