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All Journal Jurnal Ilmu Perairan (Aquatic Science) KOVALEN: Jurnal Riset Kimia
Marsela, Anggi
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Immunology & microbiology

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Sintesis dan Karakterisasi Komposit Mn-N-TiO2/Bentonit untuk Degradasi Polutan Organik: Synthesis and Characterization of Mn-N-TiO2/Bentonite Composite for Organic Pollutants Degradation Ruslan; Prismawiryanti; Sumarni, Ni Ketut; Ridhay, Ahmad; Riski, Mutiara Zalfa; Nurhalisa, Sitti; Marsela, Anggi
KOVALEN: Jurnal Riset Kimia Vol. 10 No. 3 (2024): December Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2024.v10.i3.17502

Abstract

Research has been conducted on the synthesis and characterization of Mn-N-TiO2/Bentonite composites for the degradation of organic pollutants. This study aims to synthesize the Mn-N-TiO2/Bentonite composite as a catalyst in degrading congo red in visible light and to determine the effect of irradiation time on the effectiveness of photodegradation of congo red catalyzed Mn-N-TiO2/Bentonite. The synthesis of the Mn-N-TiO2/Bentonite composite was carried out using the sol-gel method. Characterization was carried out with UV-Vis DRS, XRD, FTIR, and SEM-EDX. A photocatalytic activity test on Congo red degradation was carried out using ultraviolet and visible lamps. The results of the characterization of the Mn-N-TiO2/Bentonite configuration show that the band gap energy of Mn-N- TiO2/Bentonite with a variation of 5 g has a band gap energy of 2.14 eV with anatase crystal form. In the IR spectrum, there is a shift in wave number from 1634.49 to 1433.11cm-1, there is the vibration of the NO bond, absorption below 1000 cm-1 indicates the presence of Mn-O bonds, and absorption at wave number 1049.28 cm-1 indicates the presence of ions. manganese metal trapped in the TiO2 matrix. This spectrum indicated the presence of manganese and nitrogen. These results were confirmed by the EDX instrument, which showed the presence of 0.60% Mn and 0.04% N. SEM results show that particles that are still agglomerated and have a large size, which is influenced by water vapor in the TiO2 crystal structure. The results showed that the photodegradation activity increased significantly up to 40.9075% at 30 minutes of irradiation for the Mn-N- TiO2/Bentonite composite and 20.0225% under exposure to ultraviolet light.
Tingkat Kepuasan Nelayan dengan Jasa Penyediaan Kebutuhan Laut di Pelabuhan Perikanan Kota Dumai Provinsi Riau Marsela, Anggi; Isnaniah, Isnaniah; Zain, Jonny
Ilmu Perairan (Aquatic Science) Vol. 11 No. 1 (2023): Maret
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Penelitian ini dilaksanakan pada bulan Maret s/d April 2022. Penelitian dilakukan dengan metode survey yang bertujuan untuk mengetahui tingkat kepuasan nelayan terhadap pelayanan penyediaan alat tangkap ikan di Pelabuhan Perikanan Kota Dumai Provinsi Riau. Pengumpulan data dilakukan dengan menyebarkan kuesioner kepada 33 responden. Penentuan nilai tingkat kepuasan ditentukan dengan menggunakan analisis Customer Satisfaction Index (CSI) dan analisis Importance Performance Analysis (IPA). Berdasarkan perhitungan diperoleh nilai Customer Satisfaction Index (CSI) untuk pabrik es sebesar 71,36% yang berarti puas dan Customer Satisfaction Index (CSI) untuk bahan bakar sebesar 69,79% yang berarti puas. Secara keseluruhan berdasarkan pengolahan data yang dilakukan mengenai tingkat kepuasan nelayan terhadap pelayanan penyediaan kebutuhan ikan di Pelabuhan Perikanan Kota Dumai dapat disimpulkan bahwa nelayan puas terhadap kinerja pelabuhan.
Co-Authors Ahmad Ridhay Isnaniah, Isnaniah Jonny Zain Ni Ketut Sumarni Nurhalisa, Sitti Prismawiryanti Prismawiryanti Riski, Mutiara Zalfa Ruslan