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All Journal Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan International Journal of Hydrological and Environmental for Sustainability
Belda Amelia Junisu, Belda Amelia
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Environmental Science

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PENGARUH PENAMBAHAN KITOSAN TERHADAP EFEKTIVITAS PROSES KOAGULASI MENGGUNAKAN BESI (III) KLORIDA HEKSAHIDRAT Junisu, Belda Amelia; Handayani, Evi; Hidayati, AS Dwi Saptati Nur; Ismuyanto, Bambang; Himma, Nurul Faiqotul
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 1 No. 2 (2017)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1027.749 KB) | DOI: 10.21776/ub.rbaet.2017.001.02.04

Abstract

Air gambut merupakan sumber air potensial yang dapat digunakan sebagai air bersih jika diolah terlebih dahulu, dimana penyisihan asam humat menjadi perhatian utama karena kandungannya yang tinggi menyebabkan kekeruhan, intensitas warna yang tinggi, dan sifat asam pada air gambut. Salah satu metode yang dapat digunakan untuk penyisihan asam humat dalam air gambut adalah koagulasi dengan menggunakansenyawa kimia berupa garam logam hidrolisis sebagai koagulan. Pada penelitian ini, Besi (III) Klorida (FeCl3.6H2O) digunakan sebagai koagulan untuk penyisihan asam humat.Penentuan kondisi optimum koagulasi dilakukan dengan variasi pH (6–9) dan dosis koagulan FeCl3.6H2O (20–100 ppm). Koagulasi kemudian dilakukan dengan penambahan kitosan sebagai koagulan pendukung untuk meningkatkan efektivitas proses koagulasi, dimana dosis kitosan divariasikan pada rentang 10–50 ppm.Diperoleh nilai pH optimum adalah pH 7 dan dosis FeCl3.6H2O sebesar 80 ppm dengan penurunan warna sebesar 88,08% dan kekeruhan sebesar 97,08%. Sedangkan dengan adanya penambahan kitosan hingga 50 ppm, penurunan warna dan kekeruhansemakin meningkat hingga  94,75% dan 99,07%.
Avtur Waste Treatment to Produce Useful Fuel Products based on ASTM Standard Nurhudaeni, Dwi; Sabara, Zakir; Suryanto, Andi; Junisu, Belda Amelia; Septiariva, Iva Yenis; Fanani, Riza Aldiansyah
International Journal of Hydrological and Environmental for Sustainability Vol. 1 No. 2 (2022): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (762.921 KB) | DOI: 10.58524/ijhes.v1i2.73

Abstract

The many avtur samples that are tested every month has an impact on avtur waste that accumulates in the PT. Pertamina Lubricant PU Jakarta laboratory. Avtur wastes are usually just thrown away without being processed again. This study focuses on the utilization of avtur test results waste by knowing the quality of avtur waste with flash point, distillation, freezing point, density and color test parameters. The aims of this research are to solve the problem of waste from avtur testing results by reusing avtur waste to become a product so as to reduce the occurrence of losses. The first step is to prepare a sample of waste from avtur test results and then perform tests on the flash point, distillation, freezing point, density and color test parameters. After that, avtur waste was formulated: avtur ASTM standard T.107 with variations in the formulation, namely 5% LA : A, 10% LA : A, 15% LA : A and 20% LA : A. After that, the mixing process was carried out for 15 minutes using a stirrer motor with a speed of 300 rpm (rotations per minute). Then flash point, distillation, freezing point, density and color tests were carried out to get results that match the specifications of the avtur. The results showed that the formulation of the avtur test results: avtur according to American Standard Testing and Material (ASTM) standard had met the avtur specifications. Where the best formulation was found in 10% avtur waste formulation with test value of color : 25, density : 802.4 Kg/m3, flash point : 42.5 oC, freezing point : -55.0 oC and distillation (IBP : 156.0 oC, 10 % : 172.0 oC, 50% : 194.0 oC , 90% : 225.0 oC, End Point : 257.0 oC. Based on the results of the formulation testing that has been carried out, the avtur test results formulated with ASTM standard for avtur have met the company's quality standards.
Co-Authors Andi Suryanto AS Dwi Saptati Nur Hidayati, AS Dwi Saptati Nur Bambang Ismuyanto Evi Handayani, Evi Fanani, Riza Aldiansyah Nurhudaeni, Dwi Nurul Faiqotul Himma, Nurul Faiqotul Sabara, Zakir Septiariva, Iva Yenis