Fabrikasi Membran HDPE/rGO-TiO2 Untuk Pemisahan Urea Dan Kreatinin

Fitriani, Adinda Arista (2026) Fabrikasi Membran HDPE/rGO-TiO2 Untuk Pemisahan Urea Dan Kreatinin. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh penambahan komposit reduced graphene oxide–titanium dioksida (rGO-TiO₂) sebagai pengisi terhadap karakteristik dan kinerja membran High Density Polyethylene (HDPE) untuk pemisahan urea dan kreatinin. Komposit rGO-TiO₂ disintesis melalui metode Hummers termodifikasi yang dilanjutkan dengan proses hidrotermal. Fabrikasi membran HDPE/rGO-TiO₂ menggunakan metode Thermally Induced Phase Separation (TIPS) dengan variasi rasio massa 0,5; 0,9; dan 1,3 (b/b%). Karakterisasi membran dilakukan dengan menggunakan FTIR, XRD, SEM-EDS, analisis porositas, dan pengukuran sudut kontak air. Keberhasilan sintesis komposit rGO-TiO₂ dikonfirmasi melalui hasil karakterisasi FTIR dan XRD yang menunjukkan terbentuknya ikatan Ti–O–C sebagai bukti interaksi kimia antara rGO dan TiO₂. Penambahan komposit rGO-TiO₂ mengubah morfologi penampang membran dari struktur sponge-like menjadi coral-like dengan rongga makro yang lebih berkembang, meningkatkan porositas dari 15,66% menjadi 27,91%, serta menurunkan sudut kontak air dari 105,6° menjadi 84,38° yang menunjukkan peningkatan hidrofilisitas membran. Peningkatan hidrofilisitas dan porositas tersebut berkontribusi terhadap kenaikan fluks air dari 8,969 menjadi 39,305 L m⁻² jam⁻¹. Fluks urea tertinggi dicapai oleh membran HDPE/rGO-TiO₂ 1,3% sebesar 67,619 L m⁻² jam⁻¹ dengan rejeksi 43,597%, sedangkan kinerja optimum pemisahan kreatinin diperoleh pada membran HDPE/rGO-TiO₂ 0,9% yang menghasilkan fluks 33,654 L m⁻² jam⁻¹ dan rejeksi 60,586%.
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This study aimed to investigate the effect of incorporating a reduced graphene oxide–titanium dioxide (rGO-TiO₂) composite as a filler on the characteristics and performance of High-Density Polyethylene (HDPE) membranes for urea and creatinine separation. The rGO-TiO₂ composite was synthesized using a modified Hummers method followed by a hydrothermal process. HDPE/rGO-TiO₂ membranes were fabricated via the Thermally Induced Phase Separation (TIPS) method with rGO-TiO₂ filler mass ratio of 0.5, 0.9, and 1.3 wt%. Characterization was carried out using FTIR, XRD, SEM–EDS, porosity analysis, and water contact angle measurements. The successful synthesis of the rGO-TiO₂ composite was confirmed by FTIR and XRD analyses, which evidenced the formation of Ti–O–C bonds, confirming chemical interactions between rGO and TiO₂. The incorporation of the rGO-TiO₂ composite altered the membrane cross-sectional morphology from a sponge-like to a coral-like structure with more developed macrovoids, increased membrane porosity from 15.66% to 27.91%, and reduced the water contact angle from 105.6° to 84.38°, indicating enhanced membrane hydrophilicity. These improvements in hydrophilicity and porosity contributed to an increase in water flux from 8.969 to 39.305 L m⁻² h⁻¹. The highest urea flux was achieved by the HDPE/rGO-TiO₂ 1.3 wt% membrane, reaching 67.619 L m⁻² h⁻¹ with a rejection of 43.597%, while the optimum creatinine separation performance was obtained with the HDPE/rGO-TiO₂ 0.9 wt% membrane, which exhibited a flux of 33.654 L m⁻² h⁻¹ and a rejection of 60.586%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	HDPE, rGO-TiO₂, Membran Matriks Campuran, Urea, Kreatinin. HDPE, rGO-TiO₂, Mix Matrix Membrane, Urea, Creatinine.
Subjects:	Q Science Q Science > QC Physics > QC162 Adsorption and absorption Q Science > QC Physics > QC451 Spectroscopy Q Science > QC Physics > QC457 Infrared technology. Q Science > QD Chemistry Q Science > QD Chemistry > QD117 Absorption Q Science > QD Chemistry > QD251.2 Chemistry, Organic. Biochemistry Q Science > QD Chemistry > Polymerization Q Science > QD Chemistry > QD341.H9 Graphene Q Science > QD Chemistry > QD63.S4 Separation (Technology) Q Science > QH Biology > QH601 Cell membranes
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Adinda Arista Fitriani
Date Deposited:	04 Aug 2026 08:50
Last Modified:	04 Aug 2026 08:50
URI:	http://repository.its.ac.id/id/eprint/143263

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