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All Journal Lumbung: Jurnal Ilmiah Politeknik Pertanian Negeri Payakumbuh Jurnal Riset Teknologi Pencegahan Pencemaran Industri
Simbolon, Nur Indah
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science

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PENGARUH KOAGULAN DAN ANALISIS GROSS PROFIT MARGIN TERHADAP KADAR MUTU KARET REMAH SIR 20 Panjaitan, Jabosar Ronggur Hamonangan; Simbolon, Nur Indah; Pasaribu, Tulus Jaya
LUMBUNG Vol. 21 No. 2 (2022): Agustus
Publisher : Politeknik Pertanian Negeri Payakumbuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (228.328 KB) | DOI: 10.32530/lumbung.v21i2.517

Abstract

Indonesia merupakan negara produsen karet kedua terbesar di dunia dan merupakan negara pengekspor karet. Salah satunya karet yang diekspor dari Indonesia adalah SIR 20. Rendahnya mutu bahan olah karet adalah permasalahan karet yang sering dijumpai di Indonesia. Hal ini biasanya disebabkan oleh koagulan yang dipakai. Pada penelitian ini akan dilakukan analisis Plasticity Retention Index (PRI), kadar abu, kadar kotoran, kadar zat menguap serta analisis Gross Profit Margin (GPM) pada koagulasi karet dengan menggunakan koagulan asam format, asam sulfat dan tawas terhadap kadar mutu karet remah SIR 20. Berdasarkan hasil penelitian diperoleh nilai PRI koagulan asam sulfat adalah yang terbesar dengan nilai 77. Koagulan asam sulfat merupakan koagulan yang memiliki kadar abu dan kotoran terendah dibandingkan dengan asam format dan tawas yaitu sebesar 0,365% dan 0,025%. Kadar zat menguap pada koagulan tawas menunjukkan nilai terbesar yaitu 0,451%. Koagulan asam format memiliki nilai profit dan GPM terkecil dikarenakan harga yang lebih mahal dibandingkan asam sulfat dan tawas.
Environmentally Friendly Natural Coagulants in the Coagulation Process in the Rubber Industry Achmad, Feerzet; Deviany, Deviany; Simbolon, Nur Indah; Mahendra, Lufi Eka; Suhartono, Suhartono; Suharto, Suharto
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 15 No. 1 (2024): May
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2024.v15.no1.p33-40

Abstract

This research evaluates the use of natural coagulants, such as soursop and Aegle marmelos (Maja), in the latex coagulation process of the GT 1 clone type, compared with chemical coagulants such as formic acid and acetic acid, to gain an understanding of the characteristics of the rubber produced. Three types of crumb rubber (SIR 3 CV, SIR 3L, and SIR 3 WF) are produced from latex, while SIR 5, SIR 10, and SIR 20 are produced from treated latex coagulum. Rubber quality criteria are explained in the Indonesian Rubber Standard (SIR 3L/3WF) SNI 06-1903-2011. The use of natural coagulants, especially soursop, and Maja, in the coagulation of GT 1 clone latex shows an influence on coagulation time, Dry Rubber Content (DRC), initial plasticity (Po), Plasticity Retention Index (PRI), ash content, dirt content, and substance content evaporate. The results showed that natural coagulants had slower coagulation times, higher DRC values ​​(especially in maja), and better PRI values ​​compared to chemical coagulants. Despite having higher ash content, dirt content, and volatile matter content, all types of coagulants meet rubber quality standards. This research provides in-depth insight into the potential and advantages of natural coagulants, especially soursop, and maja, in the environmentally friendly rubber industry. In addition, analysis of rubber characteristics, such as plasticity, resistance to heating, and content of certain components, provides a comprehensive understanding of the impact of the use of natural coagulants on rubber quality.
Co-Authors Deviany, Deviany Feerzet Achmad Jabosar Ronggur Hamonangan Panjaitan Mahendra, Lufi Eka Pasaribu, Tulus Jaya Suharto Suharto Suhartono