开发与应用

基于贻贝仿生的抑菌性超滤膜的制备及其分离性能

展开
  • 1.丽水学院生态学院,丽水3230001;
    2.宁波职业技术学院,乙烯工程副产物高质化利用浙江省应用技术协同创新中心,宁波315000
黄健(1981-),男,博士,副教授,主要从事废水处理及膜分离技术研究。

收稿日期: 2019-09-28

  修回日期: 2020-09-27

  网络出版日期: 2021-01-27

基金资助

浙江省科技厅基础公益研究计划项目(LGF18B060001);国家自然科学基金青年基金(21607067)

Fabrication and performance of anti-bacterial ultrafiltration membrane based on mussel-inspired technology

Expand
  • 1. College of Ecology,Lishui University,Lishui 323001;
    2. Zhejiang Collaborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project,Ningbo Polytechnic,Ningbo 315000

Received date: 2019-09-28

  Revised date: 2020-09-27

  Online published: 2021-01-27

摘要

基于贻贝仿生技术,利用多巴胺(DA)与聚乙烯亚胺(PEI)共沉积体系,将聚多巴胺(PDA)沉积在聚醚砜(PES)超滤膜表面,并进一步将纳米银负载其表面,制备出Ag-PDA/PES复合膜。采用场发射扫描电镜、X射线光电子能谱分析和表面接触角等方法对复合膜表面形貌、化学性质、分离性能及抗生物污染性能进行表征。结果表明,当PDA沉积在膜表面之后,PES膜的接触角由70.5°降至35.8°,纯水通量由262L/(m2·h)提高至315L/(m2·h)。抑菌性能实验表明,Ag-PDA/PES复合膜表面抗菌率达98%,对铜绿假单胞菌和大肠杆菌具有优良的抗菌性能。模拟废水分离实验表明,Ag-PDA/PES复合膜对含腐植酸废水具有良好的分离性能,连续过滤12h后,通量仍高达165.9L/(m2·h),相比于初始通量仅下降了12.4%,明显优于未改性膜。

本文引用格式

黄健, 唐世刚, 杨云锋 . 基于贻贝仿生的抑菌性超滤膜的制备及其分离性能[J]. 化工新型材料, 2021 , 49(1) : 264 -268 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.01.058

Abstract

Membrane biofouling is the bottleneck which restricting the development of membrane separation technology.It is of great significance to fabricate composite membranes with anti-biofouling and excellent separation performance for the development of ultrafiltration membranes.Based on mussel biomimetic technology,polydopamine (PDA) was deposited on the surface of polyethersulfone (PES) ultrafiltration membrane by using dopamine (DA) and polyethyleneimine (PEI) co-deposition system,and further loaded with nano-silver on the membrane surface to fabricate Ag-PDA/PES composite membrane.The membrane surface morphology,surface chemical properties,separation properties and biofouling performance were characterized by field emission scanning electron microscopy (SEM),XPS and surface contact angle.The results indicated that the contact angle of the PES film was reduced from 70.5° to 35.8°,and the pure water flux was increased from 262L/(m2·h) to 315L/(m2·h) when the PDA was deposited on the surface of the film.The antibacterial performance experiment showed that the surface antibacterial rate of Ag-PDA/PES was 98%.The composite membrane had excellent antibacterial properties against Pseudomonas aeruginosa and Escherichia coli.The simulated wastewater separation experiments shown that the Ag-PDA/PES had good separation performance for humic acid-containing wastewater.After 12 hours of continuous filtration,the flux was still as high as 165.9L/(m2·h),compared with the initial flux.It decreased by 12.4%,which was significantly better than the unmodified membrane.

参考文献

[1] 张培斌,唐安琪,路景驭,等.基于贻贝仿生化学的分离功能材料[J].功能高分子学报,2017,30(1):1-14.
[2] 程毅丽,康国栋,贾静璇,等.聚四氟乙烯中空纤维膜的多巴胺自聚表面改性及性能研究[J].高校化学工程学报,2015,29(5):1259-1264.
[3] 岳鑫业,李俊俊,王铭,等.亲水性添加剂多巴胺对聚酰胺反渗透膜性能的影响[J].2014,40(8):25-28.
[4] Lee S.Membrane characterization by dynamic hysteresis:Measurements,mechanisms,and implications for membrane fouling[J].Journal of Membrane Science,2011,366(1):17-24.
[5] Wang J,Zhang W,Yue X,et al.One-pot) synthesis) of) multifunctional) magngic) ferrite-MoS2-arbon) dot) nanohybrid adsorbent) for) efficient) Pb(ⅱ)) remova[J].Journal of Materials Chemistry A,2016,4(10):3893-3900.
[6] Haeshin L,Philip B M.Mussel-inspired surface chemistry for multifunctional coatings[J].Science,2007,318:426-432.
[7] Karan C K,Bhattachaijee M.Self-healing) and) moldable) metallogels) as) the) recyclable aterials for selective dye absorption and separation[J].ACS Applied Materials & Interfaces,2016,8(8):5526-5535.
[8] Zhang J,Wu L,Zhang Y,et al.MusseI) and) fish) scale-inspired) underwater superoleophobic) kapok) membranes) for) continuous) and) simultaneous) removal) of) insoluble oils) and) soluble dyes in water[J].Journal of Materials Chemistry A,2015,3(36):18475-18482.
[9] 蒋金规.基于多巴胺自聚-组装行为的聚合物分离膜表面修饰与性能研究[D].杭州:浙江大学,2014.
[10] Chen W,SuY,Peng J,et al.Efficient wastewater treatment) by) membranes through constructing tunable antifouling membrane surfaces[J].Environmental Science & Technology,2011,45(15):6545-6552.
[11] 刘富,PVDF、PVC微孔膳亲水化改性的研究[D].杭州:浙江大学,2007.
[12] An Q F,Zhao Q.Novel composite nanofiltration membranes containing zwitterions with high permeate flux and improved anti-fouling performance[J].Journal of Membrane Science,2012,390-391:243-253.
[13] Jiang J H,Zhu L P,Li X L.Surface modification of PE porous membranes based on the strong adhesion of polydopamine and covalent immobilization of heparin[J].Journal of Membrane Science,2012,364(1-2):194-202.
[14] Dreyer D R,Miller D J,Freeman B D,et al.Elucidating the structure of poly (dopamine)[J].Langmuir,2012,28(15):6428-6435.
[15] Yang H C,Liao K J,Huang H.Mussel-inspired modification of a polymer membrane for ultrahigh water permeability and oil-in-water emulsion separation[J].Journal of Materials Chemistry A,2014,2(26):10225-10230.
[16] Zhou M,Nemade P R,Lu X.New type of membrane material for water desalination based on a cross-linked bicontinuous cubic lyotropic liquid crystal assembly[J].Journal of the American Chemical Society,2007,129(31):9574-9575.
[17] Saeki D,Imanishi M,Ohmukai Y.Stabilization of layer-by-layer assembled nanofiltration membranes by crosslinking via amide bond formation and siloxane bond formation[J].Journal of Membrane Science,2013,447:128-133.
Options
文章导航

/