SINTESIS TANAH LIAT LOKAL MAJALENGKA MENJADI ZEOLIT-Y DENGAN METODE MICROWAVE-ASSISTED HYDROTHERMAL (MAH): EFEKTIVITASNYA DALAM PENYERAPAN METILEN BIRU

DWIYANTO, RESTU FAJAR (2026) SINTESIS TANAH LIAT LOKAL MAJALENGKA MENJADI ZEOLIT-Y DENGAN METODE MICROWAVE-ASSISTED HYDROTHERMAL (MAH): EFEKTIVITASNYA DALAM PENYERAPAN METILEN BIRU. S1 thesis, Universitas Mercu Buana Jakarta.

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Abstract

Wastewater containing synthetic dyes, such as methylene blue, is one of the major environmental issues that requires effective, economical, and environmentally friendly treatment technologies. One promising alternative is the utilization of synthetic zeolite-Y derived from local aluminosilicate resources as an adsorbent material. This study aimed to synthesize zeolite-Y from Majalengka local clay using the Microwave�Assisted Hydrothermal (MAH) method, characterize the synthesized material using X�Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS), and evaluate its adsorption performance toward methylene blue. The synthesis process began with alkaline activation of the clay using NaOH, followed by crystallization through the MAH method. Adsorption performance was evaluated using a 15 ppm methylene blue solution with contact times of 1, 2, and 3 hours. The removal efficiency was determined from the change in absorbance measured by UV–Vis spectrophotometry. Material characterization was performed to identify its crystalline structure, functional groups, surface morphology, and elemental composition.The results showed that the MAH method successfully improved the material characteristics compared with the raw clay. XRD analysis revealed an increase in the maximum diffraction intensity from 10,756 cps to 43,579 cps accompanied by a decrease in the Full Width at Half Maximum (FWHM), indicating enhanced crystallinity. FTIR analysis confirmed the presence of hydroxyl (O–H) groups, Si–O– Si and Si–O–Al bonds, and a characteristic vibration band at 548 cm⁻¹, indicating the formation of a zeolitic aluminosilicate framework. SEM observations showed a more homogeneous surface morphology with the formation of crystalline aggregates, while EDS analysis confirmed that O, Si, Al, and Na were the dominant constituent elements. Adsorption experiments demonstrated that the synthesized zeolite-Y achieved methylene blue removal efficiencies of 82,62%, 90,37%, and 90,64% at contact times of 1, 2, and 3 hours, respectively, which were higher than those of the raw clay 67,38%, 74,06%, dan 77,81%. In conclusion, the synthesis of zeolite-Y from Majalengka local clay using the MAH method successfully improved the structural characteristics and adsorption performance of the material toward methylene blue. The synthesized material shows strong potential as an effective alternative adsorbent for the treatment of dye�containing wastewater. Keywords: Zeolite-Y, Methylene Blue, Microwave-Assisted Hydrothermal (MAH), Wastewater Treatment, Local Clay Utilization. Pencemaran limbah cair yang mengandung zat warna sintetis, seperti metilen biru, merupakan salah satu permasalahan lingkungan yang memerlukan teknologi pengolahan yang efektif, ekonomis, dan ramah lingkungan. Salah satu alternatif yang dapat dikembangkan adalah pemanfaatan zeolit-Y hasil sintesis dari sumber aluminosilikat lokal sebagai material adsorben. Penelitian ini bertujuan untuk mensintesis zeolit-Y berbasis tanah liat lokal Majalengka menggunakan metode Microwave-Assisted Hydrothermal (MAH), mengkarakterisasi material hasil sintesis menggunakan X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), dan Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM￾EDS), serta mengevaluasi kinerja adsorpsinya terhadap metilen biru. Sintesis diawali dengan proses aktivasi tanah liat menggunakan NaOH, dilanjutkan dengan kristalisasi menggunakan metode MAH. Kinerja adsorpsi diuji menggunakan larutan metilen biru berkonsentrasi 15 ppm dengan variasi waktu kontak selama 1, 2, dan 3 jam. Efisiensi penyisihan dihitung berdasarkan perubahan absorbansi menggunakan spektrofotometer UV-Vis. Karakterisasi material dilakukan untuk mengidentifikasi struktur kristal, gugus fungsi, morfologi permukaan, dan komposisi unsur penyusun. viii https://lib.mercubuana.ac.id ix Hasil penelitian menunjukkan bahwa metode MAH berhasil meningkatkan karakteristik material dibandingkan tanah liat awal. Analisis XRD menunjukkan peningkatan intensitas difraksi maksimum dari 10.756 cps menjadi 43.579 cps disertai penurunan nilai Full Width at Half Maximum (FWHM), yang mengindikasikan peningkatan kristalinitas material. Analisis FTIR memperlihatkan keberadaan gugus hidroksil (O–H), ikatan Si–O–Si, Si–O–Al, serta pita vibrasi pada 548 cm⁻¹ yang mengindikasikan terbentuknya struktur aluminosilikat zeolitik. Hasil SEM menunjukkan perubahan morfologi permukaan menjadi lebih homogen dengan terbentuknya agregat kristalin, sedangkan analisis EDS menunjukkan dominasi unsur O, Si, Al, dan Na sebagai penyusun utama material hasil sintesis. Pengujian adsorpsi menunjukkan bahwa zeolit-Y memiliki efisiensi penyisihan metilen biru sebesar 82,62%, 90,37%, dan 90,64% pada waktu kontak berturut-turut 1, 2, dan 3 jam, lebih tinggi dibandingkan tanah liat lokal yang hanya mencapai 67,38%, 74,06%, dan 77,81%. Berdasarkan hasil penelitian dapat disimpulkan bahwa sintesis zeolit-Y berbasis tanah liat lokal Majalengka menggunakan metode MAH berhasil meningkatkan karakteristik struktur dan performa adsorpsi material terhadap metilen biru. Material hasil sintesis berpotensi dikembangkan sebagai adsorben alternatif yang efektif dalam pengolahan limbah cair yang mengandung zat warna sintetis. Kata Kunci: Zeolit-Y, Metilen Biru, Microwace-assistede Hydrothermal, Pengolahan Air Limbah, Pemanfaatan Limbah Tanah Liat Lokal Majalengka

Item Type: Thesis (S1)
NIM/NIDN Creators: 41322010026
Uncontrolled Keywords: Zeolit-Y, Metilen Biru, Microwace-assistede Hydrothermal, Pengolahan Air Limbah, Pemanfaatan Limbah Tanah Liat Lokal Majalengka
Subjects: 300 Social Science/Ilmu-ilmu Sosial > 350 Public Administration and Military Science/Administrasi Negara dan Ilmu Kemiliteran > 353 Specific Field of Public Administration/Administrasi Negara yang Membawahi Bidang Khusus, Departemen > 353.9 Administration of Safety, Sanitation, Waste Control, Safety Administration/Administrasi Keselamatan, Sanitasi, Pengendalian Limbah, Administrasi Keselamatan
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
Divisions: Fakultas Teknik > Teknik Mesin
Depositing User: khalimah
Date Deposited: 09 Sep 2026 14:13
Last Modified: 09 Sep 2026 14:13
URI: http://repository.mercubuana.ac.id/id/eprint/103750

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