Sains Malaysiana 49(12)(2020): 3097-3104

http://dx.doi.org/10.17576/jsm-2020-4912-22

 

Surface Modification of Polyamide Ultrafiltration Membrane by Plasma Polymerisation of Acrylic Acid

(Pengubahsuaian Permukaan Membran Ultraturasan Poliamida dengan Pempolimeran Plasma Asid Akrilik)

 

A. SUHAIMI1, E. MAHMOUDI2,3, K.S. SIOW1 & M.F. MOHD RAZIP WEE1*

 

1Institute of Micro Engineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

 

2Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

 

3Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

 

Diserahkan: 21 Ogos 2020/Diterima: 28 Ogos 2020

 

ABSTRACT

Increase in hydrophilicity of the filtration membrane could attribute to the fouling reduction and overall filtration performance. In this study, we employ a surface modification on polyamide (PA) membrane by using plasma polymerization with acrylic acid as the precursor by varying the deposition time from 1 to 10 min to induce hydrophilic surface of the membrane without changing the bulk properties of PA membrane. Cross-flow filtration of humic acid using the modified PA membrane was conducted to measure permeates flux and rejection. We calculate the fouling tendencies of each membrane and the result indicates the best performance from sample with 7 min deposition time in terms of permeate flux, rejection and the lowest fouling tendencies. Therefore, this proposed technique could be useful to further improve the commercial filtration membrane; without changing the membrane fabrication process.

 

Keywords: Acrylic acid; cross-flow filtration; filtration membrane; hydrophilicity; surface modification

 

ABSTRAK

Peningkatan hidrofilik membran penurasan boleh dikaitkan dengan pengurangan kotoran dan prestasi penurasan secara keseluruhan. Dalam kajian ini, kami menggunakan pengubahsuaian permukaan pada membran poliamida (PA) dengan menggunakan teknik pempolimeran plasma dengan asid akrilik untuk mendorong permukaan hidrofilik membran tanpa mengubah sifat pukal membran PA. Masa yang digunakan untuk proses pengubahsuaian permukaan dipelbagaikan dari 1 ke 10 minit. Penurasan asid humik menggunakan membran PA yang diubah suai dilakukan untuk mengukur kadar pengeluaran air tapisan dan kadar penurasan kotoran dalam air. Kami menghitung kecenderungan kotoran setiap membran dan hasilnya menunjukkan prestasi terbaik pada sampel dengan masa pemendapan 7 min dari segi kadar pengeluaran air turasan, kadar turasan kotoran dalam air dan kecenderungan kotoran terendah. Oleh itu, teknik yang dicadangkan ini dapat meningkatkan lagi prestasi membran penurasan komersial tanpa mengubah proses fabrikasi membran.

 

Kata kunci: Aliran silang penurasan; asid akrilik; hidrofilik; membran penapisan; pengubahsuaian permukaan

 

RUJUKAN

Ayyaru, S. & Ahn, Y.H. 2017. Application of sulfonic acid group functionalized graphene oxide to improve hydrophilicity, permeability, and antifouling of PVDF nanocomposite ultrafiltration membranes. Journal of Membrane Science 525: 210-219.

Chung, Y.T., Mahmoudi, E., Mohammad, A.W., Benamor, A., Johnson, D. & Hilal, N. 2017. Development of polysulfone-nanohybrid membranes using ZnO-GO composite for enhanced antifouling and antibacterial control. Desalination 402: 123-132.

Duan, S., Liu, X., Wang, Y., Meng, Y., Alsaedi, A., Hayat, T. & Li, J. 2017. Plasma surface modification of materials and their entrapment of water contaminant: A review. Plasma Processes and Polymers 14(9): 1600218.

Gancarz, I., Poźniak, G., Bryjak, M. & Frankiewicz, A. 1999. Modification of polysulfone membranes. 2. Plasma grafting and plasma polymerization of acrylic acid. Acta Polymerica 50(9): 317-326.

Hu, M., Zheng, S. & Mi, B. 2016. Organic fouling of graphene oxide membranes and its implications for membrane fouling control in engineered osmosis. Environmental Science & Technology 50(2): 685-693.

Jeong, S., Shin, B., Jo, W., Kim, H.Y., Moon, M.W. & Lee, S. 2016. Nanostructured PVDF membrane for MD application by an O2 and CF4 plasma treatment. Desalination 399: 178-184.

Kumar, R.V., Goswami, L., Pakshirajan, K. & Pugazhenthi, G. 2016. Dairy wastewater treatment using a novel low cost tubular ceramic membrane and membrane fouling mechanism using pore blocking models. Journal of Water Process Engineering 13: 168-175.

Ladewig, B. & Al-Shaeli, M.N.Z. 2017. Fundamentals of Membrane Bioreactors: Materials System and Membrane Fouling. Gateway East: Singapore. Springer Singapore. pp. 13-38.

Mahmoudi, E., Ng, L.Y., Ang, W.L., Chung, Y.T., Rohani, R. & Mohammad, A.W. 2019. Enhancing morphology and separation performance of polyamide 6, 6 membranes by minimal incorporation of silver decorated graphene oxide nanoparticles. Scientific Reports 9(1): 1216.

Mahmoudi, E., Ng, L.Y., Mohammad, A.W., Ba-Abbad, M.M. & Razzaz, Z. 2018. Enhancement of polysulfone membrane with integrated ZnO nanoparticles for the clarification of sweetwater. International Journal of Environmental Science and Technology 15(3): 561-570.

Ooi, P.C., Wee, M.M.R., Dee, C.F., Yap, C.C., Salleh, M.M. & Majlis, B.Y. 2018. Fabrication of transparent bistable switching memory device using plasmapolymerized hexamethyldisiloxane layers with embedded graphene quantum dots. Thin Solid Films 645: 45-50.

Pettit, R.E. 2004. Organic matter, humus, humate, humic acid, fulvic acid and humin: Their importance in soil fertility and plant health. CTI Research. pp. 1-17.

Shen, L., Wang, X., Li, R., Yu, H., Hong, H., Lin, H., Chen, J. & Liao, B.Q. 2017. Physicochemical correlations between membrane surface hydrophilicity and adhesive fouling in membrane bioreactors. Journal of Colloid and Interface Science 505: 900-909.

Siow, K.S., Rahman, A.S.A., Ng, P.Y. & Majlis, B.Y. 2020. Sulfur and nitrogen containing plasma polymers reduces bacterial attachment and growth. Materials Science and Engineering: C 107: 110225.

Suhaimi, A., Mahmoudi, E., Siow, K., Mohammad, A. & Wee, M.M.R. 2020. Nitrogen incorporation by plasma polymerization of heptylamine on PES membrane for removal of anionic dye (Congo red). International Journal of Environmental Science and Technology.10.1007/s13762-020-02879-7.

Wang, K., Hou, D., Wang, J., Wang, Z., Tian, B. & Liang, P. 2018. Hydrophilic surface coating on hydrophobic PTFE membrane for robust anti-oil-fouling membrane distillation. Applied Surface Science 450: 57-65.

Yasuda, H.K. 2012. Plasma Polymerization. London: Academic Press, Inc.

Younas, H., Bai, H., Shao, J., Han, Q., Ling, Y. & He, Y. 2017. Super-hydrophilic and fouling resistant PVDF ultrafiltration membranes based on a facile prefabricated surface. Journal of Membrane Science 541: 529-540.

Yuan, S., Li, J., Zhu, J., Volodine, A., Li, J., Zhang, G., Van Puyvelde, P. & Van der Bruggen, B. 2018. Hydrophilic nanofiltration membranes with reduced humic acid fouling fabricated from copolymers designed by introducing carboxyl groups in the pendant benzene ring. Journal of Membrane Science 563: 655-663.

 

*Pengarang untuk surat-menyurat; email: m.farhanulhakim@ukm.edu.my

   

 

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