PENGARUH INKORPORASI CuO-NPs TERHADAP KARAKTERISTIK DAN KINERJA MEMBRAN NANOFILTRASI PVDF/PVP UNTUK PEMISAHAN ION GARAM

Malfa Salsabilla Syailatussuraya, - (2024) PENGARUH INKORPORASI CuO-NPs TERHADAP KARAKTERISTIK DAN KINERJA MEMBRAN NANOFILTRASI PVDF/PVP UNTUK PEMISAHAN ION GARAM. S1 thesis, Universitas Pendidikan Indonesia.

Abstract

Kelangkaan air tawar dan pencemaran air menjadikan air laut sebagai salah satu sumber alternatif air bersih yang digunakan. Teknologi membran nanofiltrasi dapat digunakan sebagai teknik pengolahan air laut untuk pretreatment desalinasi. Penelitian ini bertujuan untuk mengetahui pengaruh inkorporasi CuO-Nanoparticles (NPs) terhadap karakteristik dan kinerja membran komposit berbasis Poly (vinylidene fluoride)/Poly (vinylpyrrolidone) (PVDF/PVP). Sintesis membran dilakukan melalui metode casting dan inversi fasa dengan komposisi optimum 18%:1%:0,1% (PVDF:PVP:CuO-NPs). Membran komposit dikarakterisasi dengan spektroskopi Fourier Transform Infra-red (FTIR), pengukuran sudut kontak, sifat mekanik, dan porositas. Kinerja membran komposit ditentukan melalui pengukuran permeabilitas, permselektivitas, antifouling (ion garam NaCl, CaCl2, dan FeCl3, serta Bovine Serum Albumine (BSA)), dan release ion Cu2+ melalui sistem filtrasi cross-flow. Inkorporasi CuO-NPs pada membran PVDF/PVP memodifikasi struktur membran ditunjukkan dengan munculnya puncak serapan baru pada spektra FTIR untuk regangan ikatan Cu-O dan transformasi struktur PVDF dari fase α ke fase β yang ditunjukkan pada regangan ikatan C-F, menurunkan nilai sudut kontak menjadi 57,07°, serta meningkatkan porositas dan kekuatan mekanik membran berturut-turut menjadi 65,56% dan 4233 kPa. Inkorporasi CuO-NPs juga meningkatkan kinerja membran PVDF/PVP dalam nanofiltrasi ditunjukkan dengan terjadinya peningkatan nilai permeabilitas (27,89 L·m-2·h-1·bar-1), permselektivitas terhadap BSA (79,46%) serta penurunan rejeksi ion garam berturut-turut menjadi 20,30%; 46,73%; 84,79% (Na+; Ca2+; Fe3+), dan peningkatan resistensi fouling didemonstrasikan dengan nilai rasio pengotoran (Rt, Rr, dan Rir) yang lebih rendah daripada PVDF murni serta peningkatan nilai Flux Recovery Ratio (FRR) terhadap BSA dan ion garam, sebesar 71,80% dan 79,53%; 78,08%; 74,65% (Na+; Ca2+; Fe3+) secara berturut-turut. Membran PVDF/PVP/CuO-NPs pada komposisi optimum menunjukkan durability dan stabilitas yang baik setelah pemakaian sebanyak 6 siklus ditunjukkan dengan jumlah release ion Cu2+ hanya sebesar 0,005 mg/L.

Seawater is used as an alternate source of clean water due to freshwater scarcity and polluted water. Nanofiltration membrane technology can be used as a water treatment technique for desalination pretreatment. This study aims to determine the influence of CuO-Nanoparticle (NPs) incorporation on the characteristics and performance of Poly (vinylidene fluoride)/Poly (vinylpyrrolidone) (PVDF/PVP)-based composite membranes. Membrane synthesis was performed by casting and phase inversion with an optimal composition of 18%:1%:0.1% (PVDF:PVP:CuO-NPs). Composite membranes are characterized by FTIR spectroscopy, contact angle measurement, mechanical properties, and porosity. The performance of composite membranes is based on permeability, permselectivity, antifouling (NaCl, CaCl2, and FeCl3 salt ions, and Bovine Serum Albumine (BSA)), and Cu2+ ion release through a cross-flow filtration system. The incorporation of CuO-NPs on PVDF/PVP membranes can alter the structure of the membrane with the emergence of new absorption peaks for Cu-O stretching bonds and the transformation of PVDF structures from α phase to β phase that showed on C-F stretching bonds, decreasing the contact angle to 57.07°, also increasing porosity and mechanical strength of the membrane to 65.56% and 4233 kPa, respectively. The incorporation of CuO-NPs also improves the performance of PVDF/PVP membranes in nanofiltration as shown by the increase in permeability value (27.89 L·m-2·h-1·bar-1), permselectivity for BSA (79.46%) and decreased value for salt ions to 20.30%; 46.73%; 84.79% (Na+; Ca2+; Fe3+), respectively, also increased fouling resistance was demonstrated by fouling ratios (Rt, Rr, and Rir) lower than pure PVDF and increased Flux Recovery Ratio (FRR) values in BSA and salt ions, which are 71.80% and 79.53%; 78.08%; 74.65% (Na+; Ca2+; Fe3+), respectively. PVDF/PVP/CuO-NPs membranes showed good durability and stability throughout the 6 cycles as shown by the Cu2+ ion release value, which was only 0.005 mg/L.

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Item Type:	Thesis (S1)
Additional Information:	https://scholar.google.com/citations?hl=en&authuser=1&user=KNwYokcAAAAJ ID SINTA Dosen Pembimbing: Fitri Khoerunnisa: 258263 Hafiz Aji Aziz: 6748855
Uncontrolled Keywords:	ion garam, karakteristik, kinerja, nanofiltrasi, PVDF/PVP/CuO-NPs. salt ions, characterization, performance, nanofiltration, PVDF/PVP/CuO-NPs.
Subjects:	L Education > L Education (General) Q Science > QD Chemistry
Divisions:	Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam > Program Studi Kimia - S1 > Program Studi Kimia (non kependidikan)
Depositing User:	Malfa Salsabilla Syailatussuraya
Date Deposited:	10 Sep 2024 17:48
Last Modified:	10 Sep 2024 17:49
URI:	http://repository.upi.edu/id/eprint/123852

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