The Behavior of Organic Phosphorus under Non-Point Source Wastewater in the Presence of Phototrophic Periphyton
文献类型： 外文期刊
作者： Lu, Haiying 1 ; Yang, Linzhang 1 ; Zhang, Shanqing 3 ; Wu, Yonghong 1 ;
作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Jiangsu, Peoples R China
2.Jiangsu Acad Agr Sci, Nanjing, Jiangsu, Peoples R China
3.Griffith Univ, Griffith Sch Environm, Ctr Clean Environm & Energy, Environm Futures Ctr, Nathan, Qld 4111, Australia
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2014 年 9 卷 1 期
页码：
收录情况： SCI
摘要： To understand the role of ubiquitous phototrophic periphyton in aquatic ecosystem on the biogeochemical cycling of organic phosphorus, the conversion and removal kinetic characteristics of organic phosphorus (Porg) such as adenosine triphosphate (ATP) were investigated in the presence of the periphyton cultured in artificial non-point source wastewater. The preliminary results showed that the periphyton was very powerful in converting P-org evidenced by the fact that inorganic phosphorus (P-inorg) content in solution increased from about 0.7 to 14.3 mg P L-1 in 48 hours in the presence of 0.6 g L-1 periphyton. This was because the periphyton could produce abundant phosphatases that benefited the conversion of P-org to P-inrog. Moreover, this conversion process was described more suitable by the pseudo-first-order kinetic model. The periphyton was also effective in removing P-org, which showed that the P-org can be completely removed even when the initial P-org concentration was as high as 13 mg P L-1 in 48 hours in the presence of 1.6 g L-1 periphyton. Furthermore, it was found that biosorption dominated the P-org removal process and exhibited the characteristics of physical adsorption. However, this biosorption process by the periphyton was significantly influenced by biomass (absorbent dosage) and temperature. This work provides insights into P-org biogeochemical circulation of aquatic ecosystem that contained the periphyton or similar microbial aggregates.
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