《Table 1–The specific surface area of the MeOxcoated sand and the amounts of MeOx.》
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《The simultaneous removal of ammonium and manganese from surface water by MeO_x:Side effect of ammonium presence on manganese removal》
Moreover，in addition to the direct effect of pH on the removal of manganese，the ammonium presence may change the properties of MeOxafter long-term operation with ammonium addition.The specific surface area of the MeOx-coated sands and the amount of MeOxin this experiment are shown in Table 1.After 100 days of operation，the specific surface area of the MeOxcoated sand used to treat the feed water without and with ammonium addition increased by 14.48%and 6.61%，respectively，and the amount of MeOxgenerated in the systems without and with ammonium addition increased by 16.13%and 2.49%，respectively.Therefore，the presence of ammonium slowed down the increases in new MeOxgeneration and the specific surface area of the MeOx-coated sand.Increased specific surface area can provide more active sites for the removal of manganese（Huang et al.，2014）.In addition，the rate of manganese oxidation is related to the amount of MeOx（Stumm，1996；Vries et al.，2016）.Therefore，the manganese removal efficiency of the filter used to treat the feed water with ammonium addition was inferior to that of the filter used to treat the feed water without ammonium addition.
| 图表编号 | XD0033522400 严禁用于非法目的 |
|---|---|
| 绘制时间 | 2019.03.15 |
| 作者 | Xuan Tian、Ruifeng Zhang、Tinglin Huang、Gang Wen |
| 绘制单位 | Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology、Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology、Key Laboratory of Northwest Wa |
| 更多格式 | 高清、无水印（增值服务） |
