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All Journal EDUFORTECH FLUIDA Jurnal Teknik Lingkungan Daengku: Journal of Humanities and Social Sciences Innovation JURNAL LENTERA KARYA EDUKASI: Jurnal Pengabdian Kepada Masyarakat JURNAL INOVASI DAN PENGABDIAN MASYARAKAT INDONESIA Curricula: Journal of Curriculum Development
Gilang Garnadi Suryadi
Universitas Pendidikan Indonesia
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Journal : fluida

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Penambahan Etanol sebagai Ekstraktor Lignin dalam Mengurangi Konsumsi NaOH Dan Degradasi Fiber Pada MCOâ‚‚ Stage Gilang Garnadi Suryadi; Yella Veliana Kesuma; Nurul Ajeng Susilo; Rizal Pauzan Ramdhani
Fluida Vol. 17 No. 1 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i1.4472

Abstract

One of the stages in the pulp industry that needs a lot of NaOH is MCO₂ (Medium Consistency Oxygen). However, the production process is impeded by the highly restricted availability of NaOH. Additionally, the significant fiber degradation that frequently takes place at the MCO2 stage may lessen the pulp's viscosity and strength. The study's components included pulp, ethanol, and NaOH. The goal of the research was to use less NaOH and to slow down fiber degradation by adding ethanol. The process involves adjusting the dose to obtain the optimum proportion of ethanol and NaOH, after which the temperature and reaction time are varied to produce pulp with higher quality. The results showed that at various doses, 50%:50% was the most optimum proportion of ethanol and NaOH with a kappa number 18, viscosity 1068.11 cP, and brightness 32.15%ISO. The best temperature that occurred in the optimum proportion of ethanol and NaOH was 85°C with a kappa number of 17.3, a viscosity of 1056.78 cP, and a brightness of 32.56%ISO. Meanwhile, the best reaction time for the optimum proportion of ethanol and NaOH occurred at 90 minutes with a kappa number of 15.6 viscosity of 1023,04 cP, and brightness 32.69%ISO
The Effectiveness of AKD as Internal Sizing and Surface Sizing on Improving Barrier Properties of Medium Paper Mochammad Iqbal Fardiansyah; Nurul Ajeng Susilo; Edwin K. Sijabat; Erwin Erwin; Gilang Garnadi Suryadi
Fluida Vol. 18 No. 2 (2025): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v18i2.6276

Abstract

Recycled fiber is an alternative raw material that can be produced into new paper called medium paper. Medium paper has important parameters that need to be considered when making process, one of which is cobb size. Based on data processed at the factory, cobb size instability occurs and tends to increase beyond the standards set by the factory. An increase in the cobb size parameter occurs due to a lack of optimal sizing, causing a decrease in the paper's ability to hold air and can reduce the dimensional stability and surface quality of the paper. Improving the quality of the paper produced is necessary. In this research, chemical sizing agents were added such as AKD (Alkyl Ketene Dimer) which aims to determine the effect of adding AKD to recycled raw materials with variations in the right dose when injected as internal sizing and surface sizing to reduce cobb size value. By using a dose of Alkyl Ketene Dimer (0 kg/ton, 0.5 kg/ton, 1 kg/ton) as internal sizing and surface sizing and the effect of AKD curing time-2 days. At the best dose, the cobb size value was obtained, namely 62 gr/m² and there was an increase in the quality of Cobb size paper compared to existing by 30%. This shows that longer curing time results in a more hydrophobic surface and lower water absorption, indicating an improvement in the paper water resistance.
Co-Authors Addinna, Dian Desyandri Desyandri Dewi Lestari Rahayu Dewi Nur Azizah Edi Suryadi Edwin K. Sijabat Erwin Erwin Febriani Anggita Dewi Maharani , Shinta Melly Ismiyaturrohimah Melly Ismiyaturrohimah Miftahuddin, S.Si.,MAB., asep Mochammad Iqbal Fardiansyah Mustika Nuramalia Handayani Nurul Ajeng Susilo Putri, Tiara Cahaya Rizal Pauzan Ramdhani Rizqiana Arifatul Husna Sri Handayani Suprihanto Notodarmojo Susilo, Nurul Ajeng Yatti Sugiarti, Yatti Yella Veliana Kesuma Yosep Hernawan