采用红外光谱（IR）、X射线衍射光谱（XRD）、扫描电镜/能谱（SEM-EDS） 对纸浆漂白过程流中非过程锰元素进行分析和表征，并研究了其在纤维素纤维中的富集规律.研究发现，新制锰是由Mn3O4、Mn(OH)2和7Mn(OH)2?2MnSO4?H2O组成的片状晶体，陈化锰是由Mn3O4、MnSO4?H2O组成的颗粒状晶体；0～18.18 μmol/gcellulose范围内，纤维素纤维吸附的锰元素与过程流的锰元素呈良好的线性关系，陈化锰的纤维吸附率为40%，高于新制锰的纤维吸附率25%，其纤维饱和吸附量为7.66 μmol/gcellulose.Freundlish方程可以较好的拟合非过程锰元素在纤维素纤维上的等温吸附线，陈化锰的吸附线1/n为0.65，小于新制锰吸附线的1/n，0.81，而㏒K则明显增加.

The research was to characterize the no-process manganese element in bleaching process by means of IR, XRD, SEM-EDS. The accumulation of no-process manganese element in eucalyptus cellulose fiber was also studied. The results showed that “fresh” manganese was tabular crystal consisted of Mn3O4, Mn(OH)2 and 7Mn(OH)2?2MnSO4?H2O, while “aged” manganese was grain crystalline consisted of Mn3O4 and MnSO4?H2O. With manganese accumulated in process stream in the range of 0～18.18 μmol/gcellulose, there was a good linear relationship between adsorbed manganese on cellulose and manganese accumulated in process stream. Approximately 40% of “aged” manganese in process stream was adsorbed on cellulose fiber, larger than adsorption capacity of “fresh” manganese, 25%. Adsorption of “aged” manganese in process stream reached the ceiling about 7.66 μmol/gcellulose. The adsorption isotherm of no-process manganese element on eucalyptus cellulose fiber was compatible with adsorption being of the Freundlish type, i.e. a dynamic exchange of particles between the suspension and the fiber surface. 1/n of “aged” manganese was 0.65, less than the “fresh” manganese with 1/n 0.81. ㏒K of “aged” manganese increased significantly compared to “fresh” manganese.