分别将凹凸棒土(ATP)酸化处理、有机化预处理以及将单宁酸用甲醛固载在凹凸棒土上，进而将改性凹凸棒土与聚偏氟乙烯(PVDF)复合，采用相转化法制备PVDF/改性凹凸棒土复合膜。利用红外、透射电镜对改性凹凸棒土的结构和形态进行了表征，采用紫外吸收的方法研究了复合膜对水溶液中 Ni(Ⅱ)的吸附性能。研究结果表明，由单宁酸改性的凹凸棒土制备的PVDF复合膜能有效地去除水溶液中的 Ni (Ⅱ)，其吸附量较纯凹凸棒土改性的 PVDF 膜提高了34%。
In this work,attapulgite was modified by acidification,organic pretreatment and load the tannin acid on the attapulgite by formaldehyde,respectively.Then PVDF/modified attapulgite composite membrane was prepared by the method of phase inversion.The structure and morphology of the modified attapulgite was char-acterized by Fourier transform infrared and transmission electron microscope,and the adsorption of Ni(Ⅱ)was studied by the method of ultraviolet absorption.The results showed that composite membrane filled with the tannic acid-modified attapulgite could remove the Ni(Ⅱ)in the aqueous solution effectively,and the absorption increased by 34% than the membrane filled with pure attapulgite modified.
参考文献
| [1] | Li, W.;Gong, X.;Li, X.;Zhang, D.;Gong, H. .Removal of Cr(VI) from low-temperature micro-polluted surface water by tannic acid immobilized powdered activated carbon[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2012(1):106-113. |
| [2] | 原金海,邓利均.改性膨润土的制备及其对Pb2+的吸附性能研究[J].功能材料,2011(06):980-984. |
| [3] | 朱林晖,张丽丽,唐尧基,丁马太.蒙脱土／海藻酸钠接枝丙烯酸高吸水性复合物的制备及吸附性能研究[J].功能材料,2012(13):1810-1812. |
| [4] | 杨瑞洪.凹凸棒土对Cd（Ⅱ）的吸附性能研究[J].安徽农业科学,2011(23):14221-14223. |
| [5] | 徐婉珍,吴向阳,李春香,刘艾琴,荆俊杰,闫永胜.凹凸棒土对镉（Ⅱ）和镍（Ⅱ）吸附行为的研究及分析应用[J].冶金分析,2010(07):52-57. |
| [6] | Huang X;Liao X;Shi B .Tannin-immobilized meso-porous silica bead(BT-SiO2)as an effective adsorbent of Cr(Ⅲ)in aqueous solutions[J].Journal of Hazardous Materials,2010,173(1-3):33-39. |
| [7] | Thayyath S. Anirudhan;Padmajan S. Suchithra .Synthesis And Characterization Of Tannin-immobilized Hydrotalcite As A Potential Adsorbent Of Heavy Metal Ions In Effluent Treatments[J].Applied clay science,2008(1/2):214-223. |
| [8] | Li W;Tang Y;Zeng Y et al.Adsorption behavior of Cr(Ⅵ)ions on tannin-immobilized activated clay[J].CHEMICAL ENGINEERING JOURNAL,2012,193-194:88-95. |
| [9] | 肖玲,贲伟伟.壳聚糖固化单宁微球的制备及其吸附性能[J].精细化工,2006(08):733-737. |
| [10] | 张力平,刘建,陈国伟,秦竹.固化单宁大孔吸附树脂的制备及吸附性能研究[J].林产化学与工业,2007(05):67-72. |
| [11] | Salehi E;Madaeni S S;Heidary F .Dynamic adsorption of Ni(Ⅱ)and Cd(Ⅱ)ions from water using 8-hydroxyquinoline ligand immobilized PVDF membrane:isotherms,thermodynamics and kinetics[J].Separation and purification technology,2012,94:1-8. |
| [12] | X.S. Yi;S.L Yu;W.X. Shi.The influence of important factors on ultrafiltration of oil/water emulsion using PVDF membrane modified by nano-sized TiO2/Al2O3[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2011:179-184. |
| [13] | H.P. Ngang;B.S. Ooi;A.L. Ahmad.Preparation of PVDF-TiO_2 mixed-matrix membrane and its evaluation on dye adsorption and UV-cleaning properties[J].Chemical engineering journal,2012:359-367. |
| [14] | Liu F;Abed M R M;Li K .Preparation and character-ization of poly(vinylidene fluoride)(PVDF)based ultra-filtration membranes using nanoγ-Al2 O3[J].Journal of Membrane Science,2011,366(1-2):97-103. |
| [15] | 湛含辉,曹江.不同性能的双亲性纳米TiO2复合粒子改性聚偏氟乙烯超滤膜结构与性能的研究[J].功能材料,2011(01):91-95. |
| [16] | 吴艳玲,钟智丽.汉麻粉体／PVDF共混膜的制备、表征及对Cu2＋吸附性能研究[J].城市环境与城市生态,2012(03):43-46. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%