中文摘要：

本研究以藻类可利用的典型有机态磷——腺苷磷为模拟对象，通过氧化还原一共沉淀法制备出具有不同铁锰摩尔比的铁锰复合氧化物，并发现铁锰摩尔比为3：2时的铁锰复合氧化物（FMBO）具有最佳的腺苷磷吸附性能．进一步对该铁锰复合氧化物进行后续研究，通过扫描电镜一能谱分析（SEM-EDS）、X射线衍射（XRD）和Zeta电位对FMBO的物化性质进行了表征．结果表明，FMBO表面粗糙，含铁锰的氧化物，等电点在6左右．通过静态实验研究了FMBO对腺苷磷的吸附性能．动力学实验结果表明吸附过程更符合准二级动力学方程．Langmuir方程计算出的最大吸附量为47．62mg／g（30℃，pH6．8）．通过比较各温度下的相关系数（R2），发现其吸附等温线更符合Freundlich方程的描述．pH和离子强度影响实验结果表明，吸附容量随着pH和离子强度的增加而下降．共存离子实验结果表明，SO_4/2＋、CO_3/2-、SiO_3/2-和PO_4/3-会竞争吸附位点。而Ca2＋、Mg2＋对吸附过程无明显影响．

英文摘要：

In order to control the eutrophication in water bodies, absorption of available P is an operative approach. In this study, adenosine phosphate which can be utilized by algae is employed as an objective pollutant. The molar ratio of iron and manganese oxides is compared and selected,and then Fe-Mn bimetal oxides （FMBO） are successfully synthesized by simultaneous oxidation and co-precipitation method. It is suggested that when the molar ratio of Fe ：Mn is 3：2, FMBO has an optimal absorption performance of adenosine phosphate. Further experiments are carried out to investigate the characterization of FMBO,including scanning electron microscope and energy x-ray spectrometer （SEM-EDS） ,X-ray diffraction （XRD） and Zeta potential. The results show that the surface of FMBO is rough,and it is rich in iron oxides and manganese oxides ,the pHZPC is around 6. Batch experiments are also carded out to investigate the absorption mechanism of adenosine phosphate on FMBO. Kinetics study show that the absorption process fits to pseudo-second order model better. The calculated maximal absorption amount of FMBO by Langmuir model is 47.62 mg/g （30℃, pH6.8）. However, the absorption process is described better with Freundlich model by our comparing the regression coefficients （R2） of different temperatures. Absorption capabilities decreased with the increment of pH value and ionic strength. Coexisting anions ,SO_4/2＋、CO_3/2-、SiO_3/2- and PO_4/3- would compete for the absorption sites. As a result,the removal efficiency of adenosine phosphate will decreases. However the competing effect of Ca2＋ and Mg2＋ is not significant.