中空纤维陶瓷膜修饰及去除重金属离子的研究
|
摘要
以铝矾土为原料,采用"相转化-高温烧结"法制备低成本中空纤维陶瓷膜。膜管直径约为2.0 mm,管壁由指状孔层和海绵层组成。通过针铁矿纳米颗粒修饰后的中空纤维陶瓷膜,其表面膜孔径由0.6~0.8μm降低到10~25 nm,而渗透通量降低到原本的1.6%左右。修饰后的中空纤维陶瓷膜通过错流过滤对水中Cd2+和Pb2+的去除率分别超过90%和77%。错流过滤受到电荷排斥作用和筛分作用。
The preparation of hollow fiber ceramic membrane was prepared by phase transformation and high temperature sintering methods with bauxite as raw material.The diameter of the membrane tube is about 2 mm and the wall of tube is composed of a finger hole layer and a sponge layer.The surface pore size of hollow fiber ceramic membrane modified by goethite nanoparticles was reduced from 0.6~0.8 μm to 10~25 nm, and the permeate flux also decreased to about 1.6% of the original one.The removal efficiencies of modified hollow fiber ceramic membrane for the removal of Cd~(2+)and Pb~(2+) were more than 90% and 77%, respectively, by using of cross flow filtration.The cross flow filtration was affected by charge repulsion effect and sieving effect.
The preparation of hollow fiber ceramic membrane was prepared by phase transformation and high temperature sintering methods with bauxite as raw material.The diameter of the membrane tube is about 2 mm and the wall of tube is composed of a finger hole layer and a sponge layer.The surface pore size of hollow fiber ceramic membrane modified by goethite nanoparticles was reduced from 0.6~0.8 μm to 10~25 nm, and the permeate flux also decreased to about 1.6% of the original one.The removal efficiencies of modified hollow fiber ceramic membrane for the removal of Cd~(2+)and Pb~(2+) were more than 90% and 77%, respectively, by using of cross flow filtration.The cross flow filtration was affected by charge repulsion effect and sieving effect.
引文
[1]D.VASANTH,G.PUGAZHENTHI,R.UPPALURI.Fabrication and properties of low cost ceramic microfiltration membranes for separation of oil and bacteria from its solution[J].Journal of Membrane Science,2011,379:154-163.
[2]张小珍,周健儿,江瑜华.新型中空纤维陶瓷膜的制备方法[J].陶瓷学报,2011,32(1):124-129.
[3]刘朋超,马敬红,杨曙光,等.浸渍相转化法制备陶瓷中空纤维膜的研究进展[J].无机材料学报,2012,27(7):673-679.
[4]梁琦.Al2O3中空纤维陶瓷膜上TS-1膜的制备[J].黑龙江科技信息,2014(12):62-63.
[5]XINLEI LIU,NILAY KESER DEMIR,ZHENTAO WU,et al.Highly waterstable zirconium metal organic framework Ui O-66membranes supported on alumina hollow fibers for desalination[J].Journal of the American Chemical Society,2015(137):6999-7002.
[6]张鹏,刘再满.中空纤维陶瓷膜的制备及表面修饰[J].现代化工,2016,36(7):71-76.
[7]李建荣,付明来.层状金属硫属化物对水中锌的离子交换性能研究[J].环境科学学报,2015,35(4):1040-1047.
[8]赵晓语,朱英存,范琳清.光催化还原法处理含Cr(Ⅵ)废水的研究[J].中国环境管理干部学院学报,2013,23(5):56-58.
[9]YI LIN JAN,TSING HAI WANG,MING HSU LI,et al.Adsorption of Se species on crushed granite:a direct linkage with its internal iron-related minerals[J].Applied Radiation and Isotopes,2008,66(1):14-23.
[2]张小珍,周健儿,江瑜华.新型中空纤维陶瓷膜的制备方法[J].陶瓷学报,2011,32(1):124-129.
[3]刘朋超,马敬红,杨曙光,等.浸渍相转化法制备陶瓷中空纤维膜的研究进展[J].无机材料学报,2012,27(7):673-679.
[4]梁琦.Al2O3中空纤维陶瓷膜上TS-1膜的制备[J].黑龙江科技信息,2014(12):62-63.
[5]XINLEI LIU,NILAY KESER DEMIR,ZHENTAO WU,et al.Highly waterstable zirconium metal organic framework Ui O-66membranes supported on alumina hollow fibers for desalination[J].Journal of the American Chemical Society,2015(137):6999-7002.
[6]张鹏,刘再满.中空纤维陶瓷膜的制备及表面修饰[J].现代化工,2016,36(7):71-76.
[7]李建荣,付明来.层状金属硫属化物对水中锌的离子交换性能研究[J].环境科学学报,2015,35(4):1040-1047.
[8]赵晓语,朱英存,范琳清.光催化还原法处理含Cr(Ⅵ)废水的研究[J].中国环境管理干部学院学报,2013,23(5):56-58.
[9]YI LIN JAN,TSING HAI WANG,MING HSU LI,et al.Adsorption of Se species on crushed granite:a direct linkage with its internal iron-related minerals[J].Applied Radiation and Isotopes,2008,66(1):14-23.