不同pH值条件下磷酸铵镁沉淀产物特性研究  

Characterization of magnesium ammonium phosphate precipitation with different pH values

作　　者：杨阳[1] 崔康平[1] 孙世群[1] 孔殿超[1] 施帆君[1] 

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2011年第6期910-914,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家水体污染控制与治理科技重大专项资助项目(2008ZX07316-003)

摘　　要：文章用模拟低碳高氨氮废水进行鸟粪石（MgNH4PO4.6H2O）生成实验,确定了最佳pH值范围为9~9.5,对不同pH值条件下所得产品采用扫描电镜能谱（SEM）和X射线衍射技术（XRD-EDS）进行表征,同时采用元素分析法对其纯度进行分析,并进一步做了水溶性实验以判定pH值对产品中N、P溶出性能的影响。The struvite（MgNH4PO4·6H2O） generation experiments were carried out by using the simulant wastewater in which the carbon concentration was low but the ammonia-nitrogen concentration was high.The experimental results showed that the optimal pH value range for the reaction was 9-9.5.Products gained with different pH values were characterized by scanning electron microscopy-energy dispersive spectrometer（SEM-EDS） and X-ray diffraction（XRD）,and the purity of them was determined by using the elemental analytical method.The water-soluble experiments were also taken for determining the effect of pH values on N and P leaching performance of the products.

关 键 词：鸟粪石 PH值 晶形 酸性溶解法 

分 类 号：X703.1[环境科学与工程—环境工程]