The simultaneous removal of ammonium and manganese from surface water by MeO : Side effect of ammonium presence on manganese removal

Tian, Xuan; Zhang, Ruifeng; Wen, Gang

doi:10.1016/j.jes.2018.09.006

Cited by 19 publications

(1 citation statement)

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“…The basic physical and chemical properties—such as pH, alkalinity, and turbidity—of both the southern and northern water systems are quite different [ 18 ]. In recent years, we have studied the efficiency of iron–manganese complex oxides in the catalytic oxidation of NH 4 + -N and Mn 2+ in the surface water in north China and focused our exploration on the impact of NH 4 + -N on Mn 2+ removal [ 19 ]. We take into consideration, however, that the difference in surface-water quality between the north and the south may lead to a difference in the catalytic activity of iron–manganese complex oxides.…”

Section: Introductionmentioning

confidence: 99%

The Simultaneous Removal of Ammonium and Manganese from Surface Water in South China by Manganese Co-Oxide Film

Xing

Cheng

et al. 2022

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Exceeding the permitted manganese (Mn2+) and ammonium (NH4+-N) levels is a frequent seasonal occurrence in a water treatment plant in south China. An iron Fe–Mn complex oxide film was found capable of removing more than 95% of Mn2+ and NH4+-N at a water temperature of 20 °C and an alkalinity level of 30 mg/L. It could remove up to 5.5 mg/L of Mn2+ and up to 3.5 mg/L of NH4+-N in a stable manner. Alkalinity is a crucial factor in the removal process. The morphology, elemental composition, and micro-structure of the oxide film were investigated using a scanning electron microscope, an energy-dispersive spectrometer, a Brunauer–Emmett–Teller specific surface-area analyzer, an X-ray diffractometer, and a Fourier-transform infrared spectrometer. The capacity of the Fe–Mn complex oxide film on the surface of the filter medium increased appreciably as its content and specific surface area increased. This research, which provides a theoretical basis for simultaneous manganese and NH4+-N removal by catalytic oxidation, demonstrates an engineering reference value.

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Section: Introductionmentioning

confidence: 99%