中文摘要：

研究借鉴实验室合成的一种新生态MnO2对苯酚的优良吸附性能，对天然锰矿进行改性，并试验其吸附性能。结果表明：水合肼法改性后的天然锰矿对废水中苯酚的吸附性能优良。其对苯酚的吸附特征（吸附时间、pH值及温度对吸附量的影响）均与新生态MnO2相似，并且吸附前溶液的pH值是影响吸附的主要因素，低pH值有利于吸附，吸附模式遵循Langmuir型吸附。说明水合肼法改性天然锰矿，成功改变了天然锰矿的表面性质，此方法可行。

英文摘要：

As good adsorption to phenol of Nascent Manganese Dioxide（NMD） by synthesis, the natural manganese ore is modified by hydrazine hydrate. The adsorption performance of NMD and modified manganese ore are contrasted. The experimental results show that the sorption of phenol by modified manganese ore has high adsorption rate. The sorption performance （the influence by sorption time, pH and temperature） are analogous. And the pH value of solution before sorption is the key factor. The low pH value is good to sorption. The adsorption pattern can be complied with the law of Langmuir. So the modification of natural manganese ore by hydrazine hydrate is practicable. This method has changed the surface properties of the natural manganese ore successfully.