硅胶螯合物的制备及对钆离子吸附性能研究
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- 英文论文题名：Study on the preparation and adsorption properties of chelating adsorption material of silica gel for gadolinium(Ⅲ)
- 论文作者：程玉雯 ; 黎先财 ; 胡伟强
- 英文论文作者：Cheng Yuwen ; Li Xiancai ; Hu Weiqiang ; Chemical Department ; Nanchang University of China
- 年：2016
- 作者机构：南昌大学化学学院;
- 论文关键词：钆 ; 螯合物 ; 聚乙烯亚胺 ; 选择性识别
- 英文论文关键词：Gadolinium(Ⅲ) ; Chelate ; PEI ; Selective recognition
- 会议召开时间：2016-09-06
- 会议录名称：2016全国稀土冶炼与环境保护技术交流会会刊
- 语种：中文
- 分类号：TF845
- 学会代码：ZGXT
- 会议名称：2016全国稀土冶炼与环境保护技术交流会
- 会议地点：中国广西南宁
- 主办单位：中国稀土学会环境保护专业委员会、中国稀土学会化学和湿法冶金专业委员会、中国稀土学会火法冶金专业委员会
- 学会名称：中国稀土学会
- 页数：6
- 文件大小：547k
- 原文格式：O
- 会议级别：全国
摘要
选择聚乙烯亚胺为功能单体,利用戊二醛将Gd~(3-)交联包裹在硅胶表面接枝,制备硅胶螯合物。通过红外光谱和热重分析研究螯合物的结构性质,采用静态吸附实验对其吸附性能进行分析对比。实验结果表明,采用聚乙烯亚胺为功能单体制备的螯合物其吸附量初始浓度在300mg/L45℃的时候可以达到82.72mg/g,通过对其进行热力学分析和动力学分析,得知基于硅胶表面制备的聚乙烯亚胺螫合物对Gd3+的吸附可以用Freundlich模型和准二级动力学模型描述,且粒子内扩散过程为其速控步骤。实验证明,该螯合物对Gd3+离子具有一定的选择性。
Chelating adsorption material of silica gel takes polyethyleneimine(PEI) as functional monomer,and wraps Gd3+ up with pentanedial(GA).The structure and properties of chelating adsorption material of silica gel can be studied by IR and TGA,the adsorption properties was investigated and compared by a series of static adsorption experiments.According to the actual experiment results,the maximum adsorption capacity of the chelate,which is prepared by PEI,can reach up to 82.72mg/g when the initial concentration of adsorption system is 300mg/L at 45℃.Thermodynamic studies and kinetic studies revealed that the adsorption of chelate can be better described by Freundlich isotherm model and pseudo-second-order kinetic model.And adsorption process is controlled by particle diffusion process.Moreover,Gd3+ can be selected by the chelate.
Chelating adsorption material of silica gel takes polyethyleneimine(PEI) as functional monomer,and wraps Gd3+ up with pentanedial(GA).The structure and properties of chelating adsorption material of silica gel can be studied by IR and TGA,the adsorption properties was investigated and compared by a series of static adsorption experiments.According to the actual experiment results,the maximum adsorption capacity of the chelate,which is prepared by PEI,can reach up to 82.72mg/g when the initial concentration of adsorption system is 300mg/L at 45℃.Thermodynamic studies and kinetic studies revealed that the adsorption of chelate can be better described by Freundlich isotherm model and pseudo-second-order kinetic model.And adsorption process is controlled by particle diffusion process.Moreover,Gd3+ can be selected by the chelate.
引文
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[2]惠小勇,刘军。我国稀土资源的优势正在减弱[N].中国有色金属报,2005/05/19003.
[3]孙婕,李继文,许红霞等。我国离子型稀土矿开发项目环境问题与对策建议[J].环境影响评价,2016,38(1):20~23.
[4]Wensheng Wang.Yanbin Li.Baojiao Gao,et al.Effective removal of Fe(Ⅱ)impurity from rare earth solution using surface imprinted polymer[J].chemical engineering research and design 2 0 1 3(91):2759~2764.
[5]Jiajia Guo,Jibao Cai,Qingde Su.Ion imprinted polymer particles of neodymium:synthesis,characterization and selective recognition[J].JOURNAL OF RARE EARTHS,2009(27):22~27.
[6]Xiuli Yang.Junwei Zhang.Recovery of rare earth from ionadsorption rare earth ores with a compound lixiviant[J].Separation and Purification Technology.2015(142):203~208.
[7]Wenlu Guo,Rui Chen,Yan Liu,et al.Preparation of ionimprinted mesoporous silica SBA-15functionalized with triglycine for selective adsorption of Co(Ⅱ)[J].Colloids and Surfaces A:Physicochem.Eng.Aspects,2013(436):693-703.
[8]范洪涛,隋殿鹏,赵立兴等。表面印迹法制备钴(Ⅱ)离子印迹硅胶及性能[J].高等学校化学学报,2011,32(12):2902~2907.
[9]陈瑞。SBA-15表面离子印迹聚合物的制备及其对中低放射性金属选择性分离性能研究[D].江苏科技大学,2014.
[10]J.Ponou,L.P.Wang,G.Dodbiba.Recovery of rare earth elements from aqueous solution obtained from Vietnamese clay minerals using dried and carbonizedparachlorella[J].Chem.Eng.J.2014,(2):1070~1081.
[11]Y.Liu,Z.C.Liu,J.Gao,et al.Selective adsorption behavior of Pb(Ⅱ)by mesoporous silica SBA-15-supported Pb(Ⅱ)-imprinted polymer based on surface molecularly imprinting technique[J].J.Hazard.Mater,2011(186):197~205.
[12]Zhanchao Li,Hongtao Fan,Ying Zhang,et al.Cd(Ⅱ)-imprinted polymer sorbents prepared by combination of surface imprinting technique with hydrothermal assisted sol-gel process for selective removal of cadmium(Ⅱ)from aqueous solution[J].2011(171):703~710.
[13]邵莎莎。水性聚氨酯/改性纳米二氧化硅复合涂料的研究[D],南京理工大学硕士论文,2007.
[14]Simindokht Shirvani-Arani,Seyed Javad Ahmadi.Ali Bahrami-Samani.et al.Synthesis of nano-pore samarium(Ⅲ)-imprinted polymer for preconcentrative separation of samarium ions from other lanthanide ions via solid phase extraction[J].analytica chimica acta,2008(623):82~88.
[15]宋天佑主编.无机化学(第三版)[M].高等教育出版社,2007.
[16]M.Mazzotti.Equilibrium theory based design of simulated moving bed processes for a generalized Langmuir isotherm[J].J.Chromatogr.A,2006,(1126):311~322.
[17]S.J.Allen,G.Mckay,J.F.Porter.Adsorption isotherm models for basic dye adsorption by peat in single and binary component systems[J].J.Colloid Interface Sci.2004,(280):322~333.
[18]C.Y.Ng,W.Cheung,G.Mc Kay.Equilibrium studies of the sorption of Cu(Ⅱ)ions onto chitosan[J].J.Colloid.Interf.Sci.,2002(255):64~74.
[19]平伟光,高建峰,胡拖平等。表面炭化磺酸基型阳离子树脂的制备及其对Fe(Ⅲ)吸附性能的研究[J].离子交换与吸附,201 5,31(1):32~42.
[20]Minjia Meng.Xiangguo Meng.Yan Liu.et al.An ionimprinted functionalized SBA-15 adsorbent synthesized bysurface imprinting technique via reversible additionfragmentationchain transfer polymerization for selective removal of Ce(Ⅲ)fromaqueous solutionMinjia[J].Journal of Hazardous Materials.2014(278):134~143.
[21]A.D.Souza,P.S.Pina,V.A.Leao,et al.The leaching kinetics of a zinc sulphide concentrate in acid ferric sulphate[J].Hydrometallurgy,2007(89):72~81.
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