The main objective of this study is treatment and characterization of phosphorus from synthetic wastewater using aluminum electrodes in the electrocoagulation process. EC experimental setups were designed and different parameters were optimized. The maximum amounts of phosphorus removal efficiencies were observed at pH 7. The phosphorus removal efficiency increases from 85.16 to 97.65% as the temperature increases from 15 to 45 °C, beyond this temperature, there is small effect on removal efficiency. Pollutant removal efficiency increases with an increase in the electrolysis time. At lower initial concentrations the removal efficiencies reached to their maximum values while at the highest initial concentration, the phosphorus removal efficiency was decreased. The increase of current density improves the efficiency of phosphorus removal. Energy and aluminum consumption decreases with increasing initial concentration of phosphorus. Field Emission Scanning Electron Microscope (FESEM) image analysis demonstrated very fine structures for aluminum hydroxide/oxyhydroxides and aluminum phosphate. The existence of the different elemental composition in the sludge was proved by the help of Energy Dispersive X-ray Analysis (EDXS), indicating that the aluminum, oxygen and phosphorus were present in the product. From X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR) and Raman analyses of the sludge product, it is concluded that the chemical speciation of the by-products can be mostly aluminum hydroxide and aluminum phosphate.

中文翻译：

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铝板电极在电凝过程中对合成废水中磷的处理和表征

这项研究的主要目的是在电凝过程中使用铝电极处理和表征合成废水中的磷。设计了EC实验装置，并优化了不同的参数。在pH值为7时观察到最大的除磷效率。随着温度从15升高到45°C，除磷效率从85.16增加到97.65％，超过此温度，对除磷效率的影响很小。污染物去除效率随着电解时间的增加而增加。在较低的初始浓度下，去除效率达到最大值，而在最高的初始浓度下，除磷效率降低。电流密度的增加提高了除磷的效率。能源和铝消耗量随着磷的初始浓度增加而降低。场发射扫描电子显微镜（FESEM）图像分析表明，氢氧化铝/氢氧化铝和磷酸铝具有非常精细的结构。借助能量色散X射线分析（EDXS）证明了污泥中不同元素的存在，表明产品中存在铝，氧和磷。从污泥产物的X射线衍射（XRD），傅里叶变换红外光谱（FT-IR）和拉曼分析可以得出结论，副产物的化学形态主要是氢氧化铝和磷酸铝。场发射扫描电子显微镜（FESEM）图像分析表明，氢氧化铝/氢氧化铝和磷酸铝具有非常精细的结构。借助能量色散X射线分析（EDXS）证明了污泥中不同元素的存在，表明产品中存在铝，氧和磷。从污泥产物的X射线衍射（XRD），傅里叶变换红外光谱（FT-IR）和拉曼分析可以得出结论，副产物的化学形态主要是氢氧化铝和磷酸铝。场发射扫描电子显微镜（FESEM）图像分析表明，氢氧化铝/氢氧化铝和磷酸铝具有非常精细的结构。借助能量色散X射线分析（EDXS）证明了污泥中不同元素的存在，表明产品中存在铝，氧和磷。从污泥产物的X射线衍射（XRD），傅里叶变换红外光谱（FT-IR）和拉曼分析可以得出结论，副产物的化学形态主要是氢氧化铝和磷酸铝。借助能量色散X射线分析（EDXS）证明了污泥中不同元素的存在，表明产品中存在铝，氧和磷。从污泥产物的X射线衍射（XRD），傅里叶变换红外光谱（FT-IR）和拉曼分析可以得出结论，副产物的化学形态主要是氢氧化铝和磷酸铝。借助能量色散X射线分析（EDXS）证明了污泥中不同元素的存在，表明产品中存在铝，氧和磷。从污泥产物的X射线衍射（XRD），傅里叶变换红外光谱（FT-IR）和拉曼分析可以得出结论，副产物的化学形态主要是氢氧化铝和磷酸铝。