MUSAD, BARIQ NASHIR (2026) OPTIMASI RESPON POTENSIOMETRIK SENSOR pH BERBASIS ELEKTRODA SERAT KARBON BERLAPIS POLYPYRROLE MENGGUNAKAN METODE TAGUCHI DENGAN ANALISIS KARAKTERISTIK ALIRAN MENGGUNAKAN ANSYS FLUENT. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
pH is essential in clinical diagnosis and water quality monitoring. Glass electrodes are fragile, require continuous hydration, and are susceptible to biofouling. This study optimized a polypyrrole (PPy)-coated carbon fiber microelectrode (CFME) pH sensor using the Taguchi method and analyzed morphology and mass transport through SEM and ANSYS Fluent CFD simulations. Electropolymerization was optimized using an L9 Orthogonal Array with three replications, covering pyrrole concentration, KCl concentration, scan rate, and number of cycles. Evaluation used the Nominal-the-Best Signal-to-Noise ratio and ANOVA with a Nernstian target of -59.16 mV/pH. The optimum combination comprised 0.5 M pyrrole, 1 M KCl, a 50 mV/s scan rate, and 1 cycle. The highest S/N ratio was -23.55 dB. This combination produced a slope of -44.12 mV/pH, while confirmation experiments produced - 44.49 mV/pH with 0.83% error. Conditioning pyrrole at pH 6 improved the slope to -52.64 mV/pH and produced a more uniform PPy layer. KCl was the dominant factor, contributing 59.89%. Cycles, scan rate, and pyrrole contributed 4.76%, 0.99%, and 0.86%, respectively, while error contribution reached 33.51%. CFD simulations showed laminar flow and transient species transport, with equilibrium occurring at 7 and 11 seconds. These findings support the development of responsive and reliable portable pH sensors. Keywords: potentiometric pH sensor, CFME, polypyrrole, Taguchi method, ANSYS Fluent pH merupakan parameter penting dalam diagnosis klinis dan pemantauan kualitas air. Keterbatasan elektroda kaca, seperti rapuh, memerlukan hidrasi kontinu, dan rentan terhadap biofouling, mendorong pengembangan sensor potensiometrik solid-state. Penelitian ini bertujuan mengoptimalkan sensor pH berbasis Carbon Fiber Microelectrode (CFME) berlapis Polypyrrole (PPy) menggunakan metode Taguchi serta menganalisis morfologi dan transport massa melalui SEM dan simulasi CFD ANSYS Fluent. Optimasi elektropolimerisasi menggunakan Orthogonal Array L9 dengan tiga replikasi, meliputi konsentrasi pyrrole, konsentrasi KCl, scan rate, dan jumlah siklus. Evaluasi dilakukan menggunakan rasio Signal-to-Noise kategori Nominal-the-Best dan ANOVA dengan target Nernstian −59,16
| Item Type: | Thesis (S1) |
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| NIM/NIDN Creators: | 41322010024 |
| Uncontrolled Keywords: | sensor pH potensiometrik, CFME, Polypyrrole, metode Taguchi, ANSYS Fluent |
| Subjects: | 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin 600 Technology/Teknologi > 660 Chemical Engineering and Related Technologies/Teknologi Kimia dan Ilmu yang Berkaitan > 662 Technology Of Explosives, Fuels, Related Products, Firework, Pyrotechnics/Teknologi Industri Bahan Peledak,Bahan Bakar,Teknologi Petasan, Piroteknik > 662.9 Nonfuel Carbons/Industri Karbon Bukan Bahan Bakar |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | khalimah |
| Date Deposited: | 21 Aug 2026 11:25 |
| Last Modified: | 21 Aug 2026 11:25 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/103336 |
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