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化工学报  2013 

短孔道介孔二氧化硅SBA-15对铀的吸附性能

DOI: 10.3969/j.issn.0438-1157.2013.07.024, PP. 2480-2487

Keywords: 短孔道SBA-15,,吸附动力学,吸附等温线

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Abstract:

以短孔道介孔二氧化硅SBA-15为铀吸附剂,考察吸附时间、初始液pH、初始浓度对吸附性能的影响,并分析了吸附动力学和吸附等温线以及吸附前后红外光谱变化。结果表明,初始液pH对吸附具有重要的影响,最佳吸附的pH值为6;吸附在30min即可达到平衡;当初始浓度为100mg·L-1时,饱和吸附量为311mg·g-1;吸附量随铀溶液初始浓度的增大而增大,而吸附百分数则相反;吸附等温线符合Langmuir和Freundlich吸附模型,吸附动力学符合准二级动力学方程;吸附过程中起主要作用的基团是Si—OH和Si—O—Si。

References

[1]  Tao Z,Xie Y,Jerry G,Tewodros A.Isomer-dependent adsorption and release of cis-and trans-platin anticancer drugs by mesoporous silica nanoparticles[J].Langmuir,2010,26(11):8914-8924
[2]  Han Y,Chen F,Zhong Z,Kanaparthi R,Chen L,Effendi W.Controlled synthesis,characterization,and catalytic properties of Mn2O3 and Mn3O4 nanoparticles supported on mesoporous silica SBA-15[J].Phys. Chem. B,2006, 110(48):24450-24456
[3]  Zeng H,Abhas S,Soubir B,Kai-Uwe U,Manoranjan S,Pratim B,Jeffrey G C,Daniel E G.Nanoscale size effects on uranium(Ⅵ)adsorption to hematite[J].Environ. Sci. Technol.,2009,43(5):1373-1378
[4]  Donat R.The removal of uranium (Ⅵ)from aqueous solutions onto natural sepiolite[J].J. Chem. Thermodyn.,2009,41:829-835.
[5]  Josick C M,Timothy E P,Jennifer J H,Sangeeth T,Henri K W,Robert D A,Gregory R L,Katharina M,Harald F.Uranium sorption on various forms of titanium dioxide—influence of surface area,surface charge,and impurities[J].Environ.Sci.Technol.,2011,45:5536-5542
[6]  Chang Yang(常阳),Zhang Linxi(张麟熹),Luo Mingbiao(罗明标),Liao Zhenwei(廖桢葳),Chen Zhongsheng(陈中胜).Synthesis and adsorptive removal for uranium(Ⅵ)ions of titanate nanotubes[J].Chinese Journal of Materials Research(材料研究学报),2010,24(4):424-428
[7]  Michel L S,Michael D.Uranium uptake by hectorite and montmorillonite:a solution chemistry and polarized EXAFS study[J].Environ.Sci.Technol.,2009,43(22):8593-8598
[8]  Beck J S,Vartuli J C,Roth W J,Leonowicz M E,Kresge C T,Schmitt K D,Chu C T W,Olson D H,Sheppard E W.A new family of mesoporous molecular sieves prepared with liquid-crystal template mechanism[J].J. Amer. Chem. Soc.,1992,114(27):10834-10843
[9]  Rioux R M,Song H,Hoefelmeyer J D,Yang P,Somorjai G A.High-surface-area catalyst design:synthesis,characterization,and reaction studies of platinum nanoparticles in mesoporous SBA-15 silica[J].Phys. Chem. B,2005, 109(6):2192-2202
[10]  Tahira Y,Klaus M.Synthesis and characterization of surface modified SBA-15 silica materials and their application in chromatography[J].J.Chromatogr.A,2011,1218:6464-6475
[11]  Chellam S,Clifford D A.Physical-chemical treatment of groundwater contaminated by leachate from surface disposal of uranium tailings[J].J.Environ.Eng.,2002,128 (10):942-952
[12]  Lapka J L,Paulenova A,Alyapyshev M Y,Babain V A,Herbst R S,Law J D.Extraction of uranium(Ⅵ)with diamides of dipicolinic acid from nitric acid solutions[J].Radiochim.Acta,2009,97(6):291-296
[13]  Akyil S,Aslani M A A,Eral M.Sorption characteristics of uranium onto composite ion exchangers[J].J. Radioanal. Nucl.Chem.,2003,256(1):45-51
[14]  Andrea J C Semiao,Helfrid M A Rossiter,Andrea I Schafer.Impact of organic matter and speciation on the behaviour of uranium in submerged ultrafiltration[J].J.Membr.Sci.,2010,348:174-180
[15]  Yusan S,Erenturk S A.Adsorption equilibrium and kinetics of U(Ⅵ)on beta type of akaganeite[J].Desalination,2010,263(1/2/3):233-239
[16]  Fan Yaoting(樊耀亭),Lü Bingling(吕秉玲),Xu Jie(徐杰),Jiang Yonggui(蒋永贵),Zhang Linping(张琳萍).Adsorption of uranium on manganese dioxide in aqueous solution[J].Journal of Environmental Sciences(环境科学学报),1999,19(1):42-46
[17]  Wang Fang(王放),Li Jiansheng(李健生),Ran Dongqin(冉冬琴),Duan Mengshan(段梦姗),Sun Xiuyun(孙秀云),Wang Lianjun(王连军).Active biocatalysts based on pepsin immobilized in short channeled Zr-Ce-SBA-15[J].Journal of Inorganic Materials(无机材料学报),2012,27(2):185-190
[18]  Chen S Y,Tang C Y,Chuang W T,Lee J,Tsai Y,Jerry C C Chan,Lin C,Liu Y,Cheng S.A facile route to synthesizing functionalized mesoporous SBA-15 materials with platelet morphology and short mesochannels[J].Chem.Mater.,2008,20(12):3906-3916
[19]  Luo Mingbiao(罗明标),Liu Shujuan(刘淑娟),Yu Henghua(余亨华).Treatment of the radioactive wastewater bearing uranium with magnesium hydroxide[J].Technology of Water Treatment(水处理技术),2002,28(5):274-277
[20]  Peng Guowen(彭国文),Ding Dexin(丁德馨),Hu Nan(胡南),Yang Yushan(杨雨山),Wang Xiaoliang(王晓亮).Adsorption characteristics of uranium by Saccharomyces cerevisiae by chemical modification[J].CIESC Journal (化工学报),2011,62(11):3201-3206
[21]  Barnett M O,Jardine P M,Brooks S C,Selim H M. Adsorption and transport of uranium(Ⅵ)in subsurface media[J].Soil Sci.Soc.Am.J.,2000,64(3):908-917
[22]  Liu Xitao(刘希涛),Li Guangyue(李广悦),Hu Nan(胡南),Wang Yongdong(王永东),Ding Dexin(丁德馨).Adsorption characteristics of U(Ⅵ)on tea waste[J].CIESC Journal (化工学报),2012,63(10):3291-3296
[23]  Wang G H,Wang X G,Chai X J,Liu J S,Deng N S. Adsorption of uranium from aqueous solution on calcined and acid-activated kaolin[J].Applied Clay Science,2010,47:448-451

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