磁性炭基吸附剂的制备及其吸附与再生性能研究  

Study on the preparation of magnetic carbon-based adsorbent and its adsorption and regeneration capabilities

作　　者：刘宇[1] 周辉[2] 于鹏[2,3] 徐炎华[2] 

机构地区：[1]江苏蓝丰生物化工股份有限公司,江苏新沂221400 [2]南京工业大学环境学院,江苏南京210009 [3]南京工业大学生工学院,江苏南京210009

出　　处：《工业水处理》2015年第1期48-51,共4页Industrial Water Treatment

摘　　要：采用共沉淀法制备了磁性PAC。通过扫描电镜(SEM)、表面积测定(BET)、红外光谱(IR)、X射线衍射(XRD)、磁滞回归线等对磁性PAC进行表征,并考察吸附剂投加量、溶液p H和温度对磁性PAC吸附草甘膦的影响,此外,研究了磁性PAC的再生性能。结果表明:磁性PAC的饱和磁化强度为26.52 emu/g;制备的磁性PAC对草甘膦的最佳吸附量为134.5 mg/g,为原PAC的两倍以上;采用微波联合Fenton试剂再生,磁性PAC再生3次后,对草甘膦的吸附能力依然与原土初次吸附效果相当。The novel magnetic powder activated carbon has been prepared by coprecipitation method,and charac-terized by scanning electron microscopy （SEM）,brunauer-emmett-teller （BET）,infrared spectroscopy （IR）,X-ray diffraction（XRD） and hysteresis regression line. The influences of adsorbent dosage,pH value of solution,and reac-tion temperature on the adsorption for glyphosate are investigated. In addition,the regeneration capacity of magnetic powder activated carbon has been studied. The results show that the saturated magnetization of the magnetic powder activated carbon is 26.52 emu/g and the optimal adsorption of glyphosate 134.5 mg/g ,which is two times or more of the original powder activated carbon. Magnetic PAC can be regenerated by the microwave combined with Fenton reagent process. After it has been regenerated for three times,the adsorbing capacity for glyphosate is still corre-sponding to that of the initial result.

关 键 词：活性炭 磁性 吸附 草甘膦 

分 类 号：X703.1[环境科学与工程—环境工程]