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OALib Journal期刊
ISSN: 2333-9721
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磁性膨润土的制备及其性能
Abstract:
为实现外加磁场下膨润土处理废水后的快速分离,先以FeCl3·6H2O,FeSO4·7H2O等为主要起始原料,采用共沉淀法制备Fe3O4磁流体,再与膨润土复合制备一系列不同Fe3O4载量(质量分数,下同)的磁性膨润土。采用X射线衍射、Fourier红外吸收光谱、扫描电子显微镜、透射电子显微镜、能谱仪、振动样品磁强计对样品进行表征,研究了Fe3O4载量对磁分离回收率,Cu2+,Zn2+,Cd2+的饱和交换吸附量及去除率的影响。结果表明Fe3O4微粒附载于膨润土表面而形成磁性集合体,磁性膨润土具有超顺磁性,对Cu2+,Zn2+,Cd2+的饱和交换吸附性能及去除率与原膨润土的相当,但随Fe3O4载量增加而降低。Fe3O4载量为25%时,其饱和磁化强度、剩余磁化强度分别为13.344,0.365A·m2/kg,矫顽力为1.232kA/m,磁分离回收率为90.1%。对浓度为5mmol/L的Cu2+,Zn2+,Cd2+的饱和交换吸附量分别为23.0,21.3,18.9mg/g,去除率分别为27.9%,26.6%,14.3%。
| [1] | 汪华锋,盛晓波,林萍华,等.磁性坡缕石靶向药物载体的原位制备及性能[J].硅酸盐学报,2009,37(4):506–511.WANG Huafeng,SHENG Xiaobo,LIN Pinghua,et al.J Chin Ceram Soc(in Chinese),2009,37(4):506–511. [2]汤庆国,沈上越,梁金生,等.凹凸棒石及其磁性药物载体的吸附及解吸性能[J].硅酸盐学报,2006,34(6):739–743.TANG Qingguo,SHEN Shangyue,LIANG Jinsheng,et al.J Chin Ceram Soc(in Chinese),2006,34(6):739–743. [3]汤庆国,沈上越,梁金生,等.磁性凹凸棒石靶向药物载体材料的制备及性能[J].硅酸盐学报,2006,34(1):93–97.TANG Qingguo,SHEN Shangyue,LIANG Jinsheng,et al.J Chin Ceram Soc(in Chinese),2006,34(1):93–97. [4]沈上越,汤庆国,杨眉,等.磁性坡缕石复合材料的制备及性能[J].硅酸盐学报,2006,34(7):875–878.SHEN Shangyue,TANG Qingguo,YANG Mei,et al.J Chin Ceram Soc(in Chinese),2006,34(7):875–878. [5]曹吉林,付睿,刘秀伍,等.磁性4A沸石分子筛的合成与表征[J].天津大学学报,2009,42(2):183–188.CAO Jilin,FU Rui,LIU Xiuwu,et al.J Tianjin Univ(in Chinese),2009,42(2):183–188. [6]CAO J L,LIU X W,FU R,et al.Magnetic P zeolites:Synthesis,cha-racterization and the behavior in potassium extraction from seawater[J].Sep Purif Technol,2008,63(1):92–100. [7]OLIVEIRA L C A,PETKOWICZ D I,SMANIOTTO A,et al.Magnetic zeolites:a new adsorbent for removal of metallic contaminants from water[J].Water Res,2004,38(17):3699–3704. [8]FENG D,ALDRICH C,TAN H.Removal of heavy metal ions by carrier magnetic separation of adsorptive particulates[J].Hydrometallurgy,2000,56(3):359–368. [9]OLIVEIRA LCA,RIOS RVRA,FABRIS J D,et al.Clay-iron oxide magnetic composites for the adsorption of contaminants in water[J].Appl Clay Sci,2003,22(4):169–177. [10]OROLINOVA Z,MOCKOVCIAKOVA A.Structural study of bentonite/iron oxide composites[J].Mater Chem Phys,2009,114(2/3):956–961. [11]朱利中,马建锋.水处理材料磁性复合有机膨润土的制备方法[P].中国专利,200510049451.2005–09–28.ZHU Lizhong,MA Jianfeng.Preparation methods of magnetic bentonite composites for water treatment(in Chinese).CN Patent,200510049451.2005–09–28. [12]曹吉林,陈学青,刘秀伍,等.磁性膨润土净水剂制备及其应用[J].天津大学学报,2007,40(4):457–462.CAO Jilin,CHEN Xueqing,LIU Xiuwu,et al.J Tianjin Univ(in Chinese),2007,40(4):457–462. [13]曹吉林,陈学青,谭朝阳,等.用于净水的膨润土及其制备方法[P].中国专利,200610014052.2007–01–17.CAO Jilin,CHEN Xueqing,TAN Zhaoyang,et al.Preparation methods of bentonite for cleaning water(in Chinese).CN Patent,200610014052.2007–01–17. [14]曹吉林,付睿,刘秀伍,等.磁性核P型沸石的合成及表征[J].无机化学学报,2007,23(12):2065–2071.CAO Jilin,FU Rui,LIU Xiuwu,et al.Chin J Inorg Chem(in Chinese),2007,23(12):2065–2071. [15]BERRY L G.Mineralogy,Concepts,Descriptions,Determinations[M].San Francisco:Freeman,1983:550–551.
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