期刊名称：Journal of Environmental Science and Technology
印刷版ISSN：1994-7887
电子版ISSN：2077-2181
出版年度：2016
卷号：9
期号：1
页码：111-120
DOI：10.3923/jest.2016.111.120
出版社：Asian Network for Scientific Information
摘要：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 day1) compared to mediums I (k = 0.0435 day1) and III (k = 0.0492 day1). The mechanism of removal ammoniacal nitrogen from the medium occurred via absorption by the soil particle.
