Analisis Pengaruh Variasi Komposisi Biochar Salvinia Molesta Terhadap Performa Fotokatalis Nanokomposit TiO2/ZnO-Biochar Untuk Degradasi Methylene Blue

Azizah, Salma Nur (2026) Analisis Pengaruh Variasi Komposisi Biochar Salvinia Molesta Terhadap Performa Fotokatalis Nanokomposit TiO2/ZnO-Biochar Untuk Degradasi Methylene Blue. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perkembangan industri tekstil akibat fenomena fast fashion meningkatkan intensitas limbah cair dengan kandungan zat pewarna sintesis berbahaya bagi organisme dan lingkungan, salah satunya pewarna Methylene Blue (MB). Zat pewarna ini bersifat toksik, sulit terdegradasi secara biologis, dan berpotensi mengganggu stabilitas ekosistem perairan. Salah satu pendekatan untuk pengolahan limbah warna ini adalah metode fotokatalis semikonduktor berbasis TiO2/ZnO. Kinerja material tersebut secara tunggal memiliki kinerja yang terbatas. Penelitian ini mengembangkan kombinasi nanokomposit TiO2/ZnO dengan penambahan biochar dari Salvinia molesta sebagai agen yang memfasilitasi luas permukaan tinggi untuk peningkatan jumlah situs aktif adsorpsi MB. Metode sintesis yang dilakukan menggunakan metode kopresipitasi dan pirolisis. Penelitian ini dilakukan untuk menganalisis pengaruh variasi komposisi biochar SM terhadap efektivitas fotokatalitik degradasi Methylene Blue. Karakterisasi dilakukan dengan XRD, SEM/EDX PSA, BET, FTIR, UV-Vis sementara uji fotokatalitik menggunakan degradasi MB di bawah penyinaran UV. Variasi penambahan biochar yang digunakan adalah 0, 10, 20, dan 30%. Nanokomposit TiO2/ZnO variasi 30% menunjukan performa degradasi limbah methylene blue paling optimum selama satu jam dengan persentase degradasi sebesar 99.4%.
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The development of the textile industry due to the fast fashion phenomenon increases the intensity of liquid waste containing synthetic dyes that are harmful to organisms and the environment, including Methylene Blue (MB) dye. This dye is toxic, difficult to biodegrade, and has the potential to disrupt the stability of aquatic ecosystems. One approach to treating this colored wastewater is the TiO2/ZnO-based semiconductor photocatalysis method. The performance of these materials individually is limited. This research develops a combination of both as a TiO₂/ZnO nanocomposite was developed with the addition of biochar derived from Salvinia molesta as an agent to provide a high surface area, thereby increasing the number of active adsorption sites for MB. The synthesis was carried out using coprecipitation and pyrolysis methods. This research aims to analyze the effect of varying Salvinia molesta biochar compositions on the photocatalytic effectiveness in degrading Methylene Blue.Material characterization was performed using XRD, SEM/EDX, PSA, BET, FTIR, and UV–Vis analyses, while photocatalytic activity was evaluated through MB degradation under UV irradiation. The biochar addition varied at 0, 10, 20, and 30%. The TiO₂/ZnO nanocomposite with 30% biochar exhibited the most optimal performance, achieving a Methylene Blue degradation efficiency of 99.4% within one hour of irradiation.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Fotokatalis, Nanokomposit, TiO2/ZnO-Biochar, Methylene Blue, Salvinia molesta, Photocatalyst, Nanocomposites
Subjects:	Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD716 Photocatalysis.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Salma Nur Azizah
Date Deposited:	26 Jan 2026 08:14
Last Modified:	26 Jan 2026 08:14
URI:	http://repository.its.ac.id/id/eprint/130391

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