朱振亚1,2,
王磊1,
姜家良1,
徐亚伟1
1.西安建筑科技大学环境与市政工程学院,陕西省膜分离技术研究院,陕西省膜分离重点实验室,西安 710055
2.河北地质大学水资源与环境学院,河北省水资源可持续利用与开发重点实验室,石家庄 050031
基金项目: 陕西省重点科技创新团队计划(2017KCT-19-01)
陕西省重点产业链(群)项目(2017ZDCXL-GY-07-02)
Preparation and antifouling performance of graphene oxide modified PVDF/PET composite membrane
LI Qingqing1,,ZHU Zhenya1,2,
WANG Lei1,
JIANG Jialiang1,
XU Yawei1
1.Key Laboratory of Membrane Separation of Shaanxi Province, Research Institute of Membrane Separation Technology of Shaanxi Province, School of Environmental & Municipal Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China
2.Key Laboratory of Water Resources Sustainable Use and Development of Hebei, School of Water Resources and Environment, Hebei GEO University, Shijiazhuang 050031, China
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摘要:采用PET编织管作为复合膜的结构层,将PVP和氧化石墨烯(GO)分别作为制孔剂和改性剂与PVDF基材混合,通过涂覆-浸没凝胶相转化法制备得到具有亲水性的高强度PVDF/PET编织管复合膜。观察复合膜的断面结构和表面形貌,测定其纯水通量、表面基团以及接触角等性能参数,并将不同浓度GO改性复合膜应用于序批式膜生物反应器(SMBR)中。利用原子力显微镜(AFM)及自制的污染物胶体探针测定了溶解性微生物产物(SMP)与膜面之间的微观作用力,考察改性复合膜的抗污染特性。在40 d的反应器运行实验中,GO改性复合膜的清洗周期较改性前延长了20%～40%,该结果说明改性复合膜能够有效抑制膜面对污染物的吸附,且GO质量分数为0.5%时清洗周期最长。AFM测试结果显示,复合膜中GO质量分数为0.5%时,SMP与膜面之间的黏附力最小,抗污染能力最强。
关键词: 氧化石墨烯(GO)/
改性复合膜/
序批式膜生物反应器(SMBR)/
膜污染/
原子力显微镜(AFM)
Abstract:The poly(vinylidene fluoride) (PVDF)/PET composite membrane with high-strength and hydrophilicity was prepared by coating and immersion phase-inversion method. The PET fiber woven tube was used as supporting layer of the composite membrane. Polyvinylpyrrolidone (PVP) and graphene oxide (GO) were used as pore-forming agent and hydrophilization modifier, respectively. Cross-section structure and surface morphology were observed through SEM and AFM images, respectively. Other performance parameters including pure water flux, surface functional groups and contact angle were also determined. The modified composite membranes with different GO concentration were used in the sequencing membrane bioreactor (SMBR). To investigate the antifouling properties of the composite membrane further, the adhesion force between SMP and membrane surface were determined by atomic force microscope (AFM) equipped with self-made foulant probes. During 40 days running, the cleaning cycle of modified composite membrane was extended by 20% to 40%. The results showed that the modified composite membrane can effectively inhibit the adsorption of SMP on membrane surface. The longest cleaning cycle was obtained when the mass fraction of GO in the composite membrane was 0.5%. Also, the lowest adhesion force between SMP and modified composite membrane was observed through AFM test results, indicating the strongest antifouling ability.
Key words:graphene oxide (GO)/
modified composite membrane/
sequencing membrane bioreactor (SMBR)/
membrane fouling/
atomic force microscopy (AFM).
| [1] | 王旭东, 马亚斌, 王磊, 等.倒置 A2/O-MBR 组合工艺处理生活污水效能及膜污染特性[J].环境科学,2015,36(10):3743-3748 |
| [2] | BARRETO C M, GARCIA H A, HOOIJMANS C M, et al.Assessing the performance of an MBR operated at high biomass concentrations[J].International Biodeterioration & Biodegradation,2017,119:528-537 |
| [3] | SONG K G, CHO J, CHO K, et al.Characteristics of simultaneous nitrogen and phosphorus removal in a pilot-scale sequencing anoxic/anaerobic membrane bioreactor at various conditions[J].Desalination,2010,250(2):801-804 |
| [4] | HONG S P, BAE T H, TAK T M, et al.Fouling control in activated sludge submerged hollow fiber membrane bioreactors[J].Desalination,2002,143(3):219-228 |
| [5] | CHUA H C, ARNOT T C, HOWELL J A.Controlling fouling in membrane bioreactors operated with a variable throughput[J].Desalination,2002,149(1/2/3):225-229 |
| [6] | JIANG T, KENNEDY M D, GUINZBOURG B F, et al.Optimising the operation of a MBR pilot plant by quantitative analysis of the membrane fouling mechanism[J].Water Science and Technology,2005,51(6/7):19-25 |
| [7] | ZHANG J M, CHUA H C, ZHOU J, et al.Factors affecting the membrane performance in submerged membrane bioreactors[J].Journal of Membrane Science,2006,284(1/2):54-66 |
| [8] | IVANOVIC I, LEIKNES T O.The biofilm membrane bioreactor (BF-MBR):A review[J].Desalination and Water Treatment,2012,37(1/2/3):288-295 |
| [9] | ZHU Z Y, JIANG J L, WANG X D, et al.Improving the hydrophilic and antifouling properties of polyvinylidene fluoride membrane by incorporation of novel nanohybrid GO@SiO2 particle[J].Chemical Engineering Journal,2017,314:266-276 |
| [10] | ZHU Z Y, WANG L, XU Y W, et al.Preparation and characteristics of graphene oxide-blending PVDF nanohybrid membranes and their applications for hazardous dye adsorption and rejection[J].Journal of Colloid & Interface Science,2017,504:429-439 |
| [11] | RONG Z Y, WANG L, CHEN L C, et al.The effect of PVDF concentration on PVDF/woven tube composite membranes and the application of composite membranes in SMBR[J].Desalination and Water Treatment,2014,52(25/26/27):5052-5060 |
| [12] | CHANG X J, WANG Z X, QUAN S, et al.Exploring the synergetic effects of graphene oxide (GO) and polyvinylpyrrodione (PVP) on poly(vinylylidenefluoride)(PVDF) ultrafiltration membrane performance[J].Applied Surface Science,2014,316(1):537-548 |
| [13] | ZHANG D Q, TRZCINSKI A P, KUNACHEVA C, et al.Characterization of soluble microbial products (SMPs) in a membrane bioreactor (MBR) treating synthetic wastewater containing pharmaceutical compounds[J].Water Research,2016,102:594-606 |
| [14] | JONES K L, O′MELIA C R.Ultrafiltration of protein and humic substances: Effect of solution chemistry on fouling and flux decline[J].Journal of Membrane Science,2001,193(2):163-173 |
| [15] | LEE Y, CHO J, SEO Y, et al.Modeling of submerged membrane bioreactor process for wastewater treatment[J].Desalination,2002,146(1):451-457 |
| [16] | ROSENBERGER S, LAABS C, LESJEAN B, et al.Impact of colloidal and soluble organic material on membrane performance in membrane bioreactors for municipal wastewater treatment[J].Water Research,2006,40(4):710-720 |
| [17] | HUMMERS W S, OFFEMAN R E.Preparation of graphitic oxide[J].Journal of the American Chemical Society,1958,80(6):1339-1339 |
| [18] | 张颖,王磊,容志勇,等.高强度PVDF-PET编织管改性复合膜的制备及其性能研究[J].膜科学与技术,2014,34(3):69-73 |
| [19] | 吕晓龙,马世虎,陈燚.一种多孔分离膜孔径及其分布的测定方法[J].天津工业大学学报,2005,24(2):6-8 |
| [20] | MIAO R, WANG L, WANG X D, et al.Preparation of a polyvinylidene fluoride membrane material probe and its application in membrane fouling research[J].Desalination,2015,357:171-177 |
| [21] | WANG G X, YANG J, PARK J, et al.Facile synthesis and characterization of graphene nanosheets[J].Journal of Physical Chemistry C,2008,112(22):8192-8195 |
| [22] | ZHENG X L, XU Q, HE L H, et al.Modification of graphene oxide with amphiphilic double-crystalline block copolymer polyethylene-b-poly(ethylene oxide) with assistance of supercritical CO2 and its further functionalization[J].Journal of Physical Chemistry B,2011,115(19):5815-5826 |
| [23] | YU L Y, XU Z L, SHEN H M, et al.Preparation and characterization of PVDF-SiO2 composite hollow fiber UF membrane by sol-gel method[J].Journal of Membrane Science,2009,337(1/2):257-265 |
| [24] | SAFARPOUR M, KHATAEE A, VATANPOUR V.Effect of reduced graphene/TiO2 nanocomposite with different molar ratios on the performance of PVDF ultrafiltration membranes[J].Separation & Purification Technology,2015,140:32-42 |
| [25] | WANG L, MIAO R, WANG X D, et al.Fouling behavior of typical organic foulants in polyvinylidene fluoride ultrafiltration membranes:Characterization from microforces[J].Environmental Science and Technology,2013,47(8):3708-3714 |
| [26] | DREWS A, MANTE J, IVERSEN V, et al.Impact of ambient conditions on SMP elimination and rejection in MBRs[J].Water Research,2007,41(17):3850-3858 |
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氧化石墨烯改性PVDF/PET复合膜的制备及其抗污染性能
李青青1,,朱振亚1,2,
王磊1,
姜家良1,
徐亚伟1
1.西安建筑科技大学环境与市政工程学院,陕西省膜分离技术研究院,陕西省膜分离重点实验室,西安 710055
2.河北地质大学水资源与环境学院,河北省水资源可持续利用与开发重点实验室,石家庄 050031
基金项目: 陕西省重点科技创新团队计划(2017KCT-19-01) 陕西省重点产业链(群)项目(2017ZDCXL-GY-07-02)
关键词: 氧化石墨烯(GO)/
改性复合膜/
序批式膜生物反应器(SMBR)/
膜污染/
原子力显微镜(AFM)
摘要:采用PET编织管作为复合膜的结构层,将PVP和氧化石墨烯(GO)分别作为制孔剂和改性剂与PVDF基材混合,通过涂覆-浸没凝胶相转化法制备得到具有亲水性的高强度PVDF/PET编织管复合膜。观察复合膜的断面结构和表面形貌,测定其纯水通量、表面基团以及接触角等性能参数,并将不同浓度GO改性复合膜应用于序批式膜生物反应器(SMBR)中。利用原子力显微镜(AFM)及自制的污染物胶体探针测定了溶解性微生物产物(SMP)与膜面之间的微观作用力,考察改性复合膜的抗污染特性。在40 d的反应器运行实验中,GO改性复合膜的清洗周期较改性前延长了20%～40%,该结果说明改性复合膜能够有效抑制膜面对污染物的吸附,且GO质量分数为0.5%时清洗周期最长。AFM测试结果显示,复合膜中GO质量分数为0.5%时,SMP与膜面之间的黏附力最小,抗污染能力最强。
English Abstract
Preparation and antifouling performance of graphene oxide modified PVDF/PET composite membrane
LI Qingqing1,,ZHU Zhenya1,2,
WANG Lei1,
JIANG Jialiang1,
XU Yawei1
1.Key Laboratory of Membrane Separation of Shaanxi Province, Research Institute of Membrane Separation Technology of Shaanxi Province, School of Environmental & Municipal Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China
2.Key Laboratory of Water Resources Sustainable Use and Development of Hebei, School of Water Resources and Environment, Hebei GEO University, Shijiazhuang 050031, China
Keywords: graphene oxide (GO)/
modified composite membrane/
sequencing membrane bioreactor (SMBR)/
membrane fouling/
atomic force microscopy (AFM)
Abstract:The poly(vinylidene fluoride) (PVDF)/PET composite membrane with high-strength and hydrophilicity was prepared by coating and immersion phase-inversion method. The PET fiber woven tube was used as supporting layer of the composite membrane. Polyvinylpyrrolidone (PVP) and graphene oxide (GO) were used as pore-forming agent and hydrophilization modifier, respectively. Cross-section structure and surface morphology were observed through SEM and AFM images, respectively. Other performance parameters including pure water flux, surface functional groups and contact angle were also determined. The modified composite membranes with different GO concentration were used in the sequencing membrane bioreactor (SMBR). To investigate the antifouling properties of the composite membrane further, the adhesion force between SMP and membrane surface were determined by atomic force microscope (AFM) equipped with self-made foulant probes. During 40 days running, the cleaning cycle of modified composite membrane was extended by 20% to 40%. The results showed that the modified composite membrane can effectively inhibit the adsorption of SMP on membrane surface. The longest cleaning cycle was obtained when the mass fraction of GO in the composite membrane was 0.5%. Also, the lowest adhesion force between SMP and modified composite membrane was observed through AFM test results, indicating the strongest antifouling ability.
