ساخت و ارزیابی غشای ترکیبی نانوفیلتراسیون بر پایه پلی‎اتر‎سولفون/ پلی‎وینیلیدن‎فلوراید به منظور تصفیه پساب

نوع مقاله: مقاله پژوهشی

نویسندگان

گروه مهندسی شیمی، دانشکده فنی و مهندسی، دانشگاه اراک، ایران

10.22078/pr.2018.3022.2402

چکیده

در این پژوهش غشای ترکیبی نانوفیلتراسیون بر پایه‌ پلی‎اتر‎سولفون (PES)/ پلی‌وینیلیدن‌فلوراید (PVDF) به‎روش وارونگی فازی تهیه گردید. از آنجا که پلیمر‌پلی‌وینیلیدن‌فلوراید نسبت به سایر پلیمرها دارای خاصیت پیزوالکتریکی بالایی بوده  می‎تواند در ترکیب با سایر پلیمر‎ها منجر به تولید غشاهایی با ساختاری متفاوت و مقاوم در برابر گرفتگی گردد که قابلیت کاربرد در تصفیه پساب صنایع مختلف را دارا است. اثر افزودن غلظت‌های مختلف از پلی‎وینیلیدن فلوراید در محلول پلیمری بر عملکرد غشا بررسی شد. غشاهای تهیه‌شده توسط آنالیزهای فلاکس عبوری از غشا، انتخاب‎پذیری، درصد محتوای آب و عکس‌های میکروسکوپ الکترونی (SEM) و FTIR مورد ارزیابی قرار گرفتند. نتایج نشان داد که با افزایش غلظت پلی‎وینیلیدن‎ فلوراید تا حدود 2 درصد وزنی، محتوای آب و تخلخل غشا در ابتدا افزایش و سپس کاهش یافت. هم‌چنین فلاکس غشاهای بر پایه پلی‎اتر‎سولفون/ پلی‎وینیلیدن‎فلوراید در مقایسه با فلاکس غشای خالص بر پایه پلی اتر سولفون بهبود قابل ملاحظه‌ای داشته است. همچنین با افزایش غلظت پلی‎وینیلیدن‎فلوراید تا حدود 5/0درصد وزنی میزان پس‎دهی (انتخاب‎پذیری) حدود 20% بهبود یافت. 
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Fabrication and Characterization of Blending Nanofiltration Membranes Based on PES / PVDF for Wastewater Treatment

نویسندگان [English]

  • Fahime Parvizian
  • Mahdieh Sadat Mosavi Motahar
  • Sayed Mohsen Hosseini
  • Ehsan Bagheripor
Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, Iran
چکیده [English]

In this research, blending nanofiltration membranes based on polyethersulfone (PES)/poly vinylidene fluoride (PVDF) were prepared by using phase inversion method. PVDF has high piezoelectricity property in comparison with other polymers, so its blending with other polymers produces new structure membranes with appropriate fouling resistant. Moreover, the effect of different PVDF concentrations in the casting solution on membrane performance was studied. The flux, salt rejection and water content measurements and also scanning electron microscope (SEM) and FTIR analysis were carried out for the membrane characterization. Obtained results showed that water content and porosity were initially increased and then decreased. Also, the results demonstrated that the permeability flux and the pure water flux of PES/PVDF blend membranes were higher than pristine PES membrane. The salt rejection has improved up to 20%, when the concentration of PVDF is 0.5 wt.%.
 

کلیدواژه‌ها [English]

  • Waste Water Treatment
  • Polyethersulfone (PES)
  • Poly Vinylidene Fluoride (PVDF)
  • Blending Membrane
  • Nanofiltration

[1]. Nat K., “Membrane separation processes,” Prentice Hall of India Private Limited, New Delhi-110001, GH Patel College of Engineering and Technology Eastern Economy Edition, 2008.##

[2]. Baker R. W., “Membrane technology and application,” John Wiley & Sons, Ltd, Membrane Technology and Research, Inc. Menlo Park, California, 2ed, 2004.##

[3]. Lonsdale H. K., “Membrane separation processes”, Membrane Science, Vol. 12, pp. 132-133, 1982.##

[4]. Bollinger W. A. and Maclean D. L., “Separation systems for oil refining and production,” Chemical Engineering Progress, Vol. 78, pp. 27-32, 1982.##

[5]. Srikanth G., “Membrane Separation Processes,” Technology and Business Opportunities, Water Conditioning and Purification, pp. 1- 4, 2008.##

[6]. Helakorpi P., Mikkonen H., Myllykoski L. and Keiski R., “Nanofiltration in the dairy industry: case study: effect of nanofiltration on lactose crystallization,” Proceedings World filtration Congress 8, Brighton, pp. 914-917, 2000.##

[7]. Zhao C., Xue J., Ran F. and Sun S., “Modification of polyethersulfone membranes –A review of methods,” Progress in Materials Science, Vol. 58, pp. 76–150, 2013.##

[8]. Zhu J., Guo N., Zhang Y., Yu L. and Liu J., “Preparation and characterization of negatively charged PES nanofiltration membrane by blending with halloysite nanotubes grafted with poly (sodium 4-styrenesulfonate) via surface-initiated ATRP,” Journal of Membrane Science, Vol. 465, pp. 91–99, 2014.##

[9]. Pourjafar S., Rahimpour A. and Jahanshahi M., “Synthesis and characterization of PVA/PES thin film composite nanofiltration membrane modified with TiO2 nanoparticles for better performance and surface properties,” Industrial and Engineering Chemistry, Vol. 18, pp. 1398–1405, 2012.##

[10]. Hwang H. Y., Kim D. J., Yim W. J. and Nam S. Y., “PES/SPAES blend membranes for nanofiltration: The effects of sulfonic acid groups and thermal treatment,” Desalination, Vol. 289, pp. 72–80, 2012.##

[11]. Zhu W. P., Sun S. P., Gao J., Fu F. J. and Chung T. S., “Dual-layer polybenzimidazole /polyethersulfone (PBI/PES) nanofiltration (NF) hollow fiber membranes for heavy metals removal from wastewater,” Journal of Membrane Science, Vol. 456, pp. 117–127, 2014.##

[12]. Lau W.J. and Ismail A. F., “Theoretical studies on the morphological and electrical properties of blended PES/SPEEK nanofiltration membranes using different sulfonation degree of SPEEK,” Journal of Membrane Science, Vol. 334, pp. 30–42, 2009.##

[13]. Daraei P., Madaeni S. S., Ghaemi N. , Khadivi M. A., Rajabi L., Derakhshan A. A. and Seyedpour F., “PAA grafting onto new acrylate-alumoxane/PES mixed matrix nano-enhanced membrane: Preparation, characterization and performance in dye removal,” Chemical Engineering Journal, Vol. 221, pp. 111–123, 2013.##

[14]. Wu L., Sun J. and Wang Q., “Poly (vinylidene fluoride)/polyethersulfone blend membranes: Effects of solvent sort, polyethersulfone and polyvinylpyrrolidone concentration on their properties and morphology,” Journal of Membrane Science, Vol. 285, pp. 290–298, 2006.##

[15]. Zhang J., Wang Q., Wang Z., Zhu C. and Wu Z., “Modification of poly (vinylidene- fluoride)/polyethersulfone blend membrane with polyvinyl alcohol for improving antifouling ability,” Journal of Membrane Science, Vol. 466, pp. 293–301, 2014. ##

[16]. Rahimpour A., Jahanshahi M., Rajaeian B. and Rahimnejad M., “TiO2 entrapped nano-composite PVDF/SPES membranes: preparation, characterization, antifouling and antibacterial properties,” Desalination, Vol. 278, pp. 343–353, 2011.##

[17]. Ansari S., Moghadassi A. R. and Hosseini S. M., “Fabrication of novel poly (phenylene ether ether sulfone) based nanocomposite membrane modified by Fe2NiO4 nanoparticles and ethanol as organic modifier,” Desalination, Vol. 357, pp. 189–196, 2015. ##

[18]. Rajabi H., Ghaemi N., Madaeni S. S., Daraei P., Astinchap B., Zinadini S. and Razavizadeh S. H., “Nano-ZnO embedded mixed matrix polyethersulfone (PES) membrane: Influence of nanofiller shape on characterization and fouling resistance,” Applied Surface Science, Vol. 349, pp. 66–77, 2015.##

[19]. Mobarakabad P., Moghadassi A. R. and Hosseini S. M., “Fabrication and characterization of poly (phenylene ether-ether sulfone) based nanofiltration membranes modified by titanium dioxide nanoparticles for water desalination,” Desalination, Vol. 365, pp. 227–233, 2015.##

[20]. Hamid N. A. A., Ismail A. F., Matsuura T., Zularisam A. W., Lau W. J., Yuliwati E. and Abdullah M. S., “Morphological and separation performance study of polysulfone/titanium dioxide (PSF/TiO2) ultrafiltration membranes for humic acid removal,” Desalination, Vol. 273, pp. 85–92, 2011.##

[21]. Boributh S., Chanachai A. and Jiraratananon R., “Modification of PVDF membrane by chitosan solution for reducing protein fouling,” Journal of Membrane Science, Vol. 342, pp. 97–104, 2009.##

[22]. Madaeni S. S. and Pourghorbani R., “Preparation of PVDF/PES Blend Membranes for Cold Sterilization of Water and Milk,” Advances in Polymer Technology, Vol. 32, pp. 141–152, 2013.##

[23]. Boricha A. G. and Murthy Z. V. P., “Preparation of N,O-carboxymethyl chitosan/cellulose acetate blend nanofiltration membrane and testing its performance in treating industrial wastewater,” Chemical Engineering Journal, Vol. 157, pp. 393–400, 2010. ##

[24]. Madaeni S. S. and Rahimpour A., “Effect of type of solvent and non- solvents on morphology and performance of polysulfone and polyethersulfone ultrafiltration membranes for milk concentration,” Polymers for Advanced Technologies, Vol. 16, pp. 717-724, 2005.##

[25]. Shen L., Bian X., Lu X. , Shi L., Liu Z., Chen L., Hou Z. and Fan K., “Preparation and characterization of ZnO/polyethersulfone (PES) hybrid membranes,” Desalination, Vol. 293, pp. 21–29, 2012.##

[26]. Rajabi H., Ghaemi N., Madaeni S. S. Daraei, P., Khadivi M. A. and Falsafi M., “Nanoclay embedded mixed matrix PVDF nanocomposite membrane: Preparation, characterization and biofouling resistance,” Applied Surface Science, Vol. 313, pp.  207–214, 2014.##