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首页> 外文期刊>Journal of Environmental Science and Technology >Removal Efficiency of Ammoniacal Nitrogen from Palm Oil Mill Effluent (POME) by Varying Soil Properties
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Removal Efficiency of Ammoniacal Nitrogen from Palm Oil Mill Effluent (POME) by Varying Soil Properties

机译：改变土壤性质对棕榈油厂废水（POME）中氨氮的去除效率

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Palm Oil Mill Effluent (POME) contains large amounts of organic matter s and nutrients. Instead of discharging into oxidation ponds, POME can be used as an alternative option to replace inorganic fertilizers which have been known to increase the hardness and acidity of the soil over time. This study investigated the effect of different soil properties on the ammoniacal nitrogen removal efficiencies in POME. The ammoniacal nitrogen removal efficiencies from three mediums over 7 days of retention times were studied. Medium I contained major amount of sand, whereas medium II contained major amounts of clay and lastly medium III contained large amounts of silt and clay. The results showed that medium II produced the highest removal efficiency of ammoniacal nitrogen in POME, with the average removal efficiency of 77±5.1%. The average values of removal efficiencies obtained from mediums I and III were 61±6.2 and 58±11.3%, respectively. In addition, the removal efficiency of ammoniacal nitrogen increased slowly with the retention time. Medium II recorded the highest removal rate (k = 0.0897 day?1) compared to mediums I (k = 0.0435 day?1) and III (k = 0.0492 day?1). The mechanism of removal ammoniacal nitrogen from the medium occurred via absorption by the soil particle.
机译：棕榈油厂废水（POME）包含大量的有机物和营养物质。代替排放到氧化池中，可以将POME用作替代无机肥料的替代选择，已知该无机肥料会随着时间的推移增加土壤的硬度和酸度。本研究调查了不同土壤特性对POME中氨氮去除效率的影响。研究了在7天的保留时间内从三种介质中去除氨的效率。介质I含有大量的沙子，介质II含有大量的粘土，最后介质III含有大量的淤泥和粘土。结果表明，培养基Ⅱ对POME的氨氮去除率最高，平均去除率为77±5.1％。从介质I和介质III获得的去除效率平均值分别为61±6.2％和58±11.3％。此外，氨氮的去除效率随着保留时间的增加而缓慢增加。与培养基I（k = 0.0435 day ？1 ）和培养基III（k = 0.0492 day ）相比，培养基II的去除率最高（k = 0.0897 day ？1 ） >？1 ）。从土壤中去除氨氮的机理是通过土壤颗粒的吸收而发生的。

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