The goal of this project was to remove iron from drinking water using a new electrocoagulation (EC) cell. In this research, a flow column has been employed in the designing of a new electrocoagulation reactor (FCER) to achieve the planned target. Where, the water being treated flows through the perforated disc electrodes, thereby effectively mixing and aerating the water being treated. As a result, the stirring and aerating devices that until now have been widely used in the electrocoagulation reactors are unnecessary. The obtained results indicated that FCER reduced the iron concentration from 20 to 0.3 mg/L within 20 min of electrolysis at initial pH of 6, inter-electrode distance (ID) of 5 mm, current density (CD) of 1.5 mA/cm2, and minimum operating cost of 0.22 US $/m3. Additionally, it was found that FCER produces H2 gas enough to generate energy of 10.14 kW/m3. Statistically, it was found that the relationship between iron removal and operating parameters could be modelled with R2 of 0.86, and the influence of operating parameters on iron removal followed the order: C0>t>CD>pH. Finally, the SEM (scanning electron microscopy) images showed a large number of irregularities on the surface of anode due to the generation of aluminium hydroxides.

译文

该项目的目标是使用新的电凝 (EC) 细胞从饮用水中去除铁。在这项研究中,在设计新的电凝反应器 (FCER) 时采用了流动柱,以实现计划的目标。其中,被处理的水流过穿孔的圆盘电极,从而有效地混合和充气被处理的水。因此,不需要迄今为止在电凝反应器中广泛使用的搅拌和充气装置。获得的结果表明,在初始pH为6,电极间距离 (ID) 为5毫米,电流密度 (CD) 为1.5 mA/cm2,最低运行成本为0.22美元/m3的情况下,FCER在电解20分钟内将铁浓度从20 mg/L降低到0.3 mg/L。此外,发现FCER产生足以产生10.14 kW/m3能量的H2气体。统计发现,可以用0.86的R2建模除铁与操作参数之间的关系,并且操作参数对除铁的影响顺序为: C0>t>CD>pH。最后,SEM (扫描电子显微镜) 图像显示,由于氢氧化铝的产生,阳极表面出现了大量不规则性。

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