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All Journal Chemical Engineering Journal Storage (CEJS) ROCE : Jurnal Pertanian Terapan Proceedings of International Conference on Multidisciplinary Engineering (ICOMDEN)
Faisal
Universitas Malikussaleh
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Other

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Mechanical and Physical Properties of Bio-Briquette Produced from Gayo Arabica Coffee-Skin Adi Setiawan; Juwaini; Ahmad Nayan; Fauzan; Faisal
Proceedings of International Conference on Multidisciplinary Engineering (ICOMDEN) Vol. 1 (2018): Proceedings of International Conference on Multidisciplinary Engineering (ICOMDEN)
Publisher : Faculty of Engineering, Malikussaleh University

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Abstract

Enormous amount of Gayo Arabica coffee-by-products highlights its potential as source of renewable energy. Utilizing coffee skin as a raw material for bio-briquettes is considered as an effective way to minimize their wastage as landfill. This study aims to examine the characteristics of bio-briquettes produced through the cold-forming process at a pressure of 100, 150 and 200 kg/cm2 without binder. Prior to briquetting process, the raw material was sun-dried, ground and sieved to 0.841 mm. A mixture was then made by adding water followed by molding and drying processes. Characterization of the briquette employs a number of techniques including DSC, TGA, bomb calorimeter and proximate analyses as well as mechanical testing. The results show that the calorific value of the coffee-skin briquette is 4764 cal/g containing 16.5 wt% of moisture, 12 wt.% ash. The rate of combustion is 0.019 g/s with ignition time of 196 s. Varying briquetting pressure results in a change in ignition time of bio-briquettes as the density is increased. However, no significant change was observed on the rate of combustion upon increasing the briquetting pressure. This investigation concludes the potential use of coffee industry by-product as feedstock for solid
GERMINATION OF TOMATO SEEDS (Solanum Lycopersicum L.) BASED ON SEED AGE AND TYPE OF SEEDLING MEDIA USING THE F&F MANUAL GERMINATOR TOOL: PERKECAMBAHAN BENIH TOMAT (Solanum Lycopersicum L.) PADA UMUR BENIH DAN JENIS MEDIA SEMAI MENGGUNAKAN ALAT F&F MANUAL GERMINATOR Faisal; Ismady; Muhammad Rafli; Muhammad Yusuf Nurdin; Anwar Puteh
ROCE : Jurnal Pertanian Terapan Vol. 3 No. 1 (2026): JPT ROCE 5, 2026
Publisher : PT. ROCE WISDOM ACEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71275/roce.v3i1.166

Abstract

The purpose of this study was to determine the effect of different seed age treatments and seedling media types on seed viability and vigor of tomato seeds. The results showed that seed age treatments significantly affected germination rate, vigor index, growth synchrony, growth rate, normal seedling length, and normal seedling fresh weight. Meanwhile, different seedling media treatments significantly affected tomato seed viability and vigor. Furthermore, there was a significant interaction between seed age treatments and media types on all parameters of tomato seed viability and vigor.
Produksi Bioetanol dari Limbah Kertas HVS (Houtvrij Schrijf papier) melalui Proses Hidrolisis Asam Klorida (HCl) Aditya Maulana Adit; Meriatna; Leni Maulinda; Faisal; Muhammad; Zulmiardi
Chemical Engineering Journal Storage (CEJS) Vol. 6 No. 02 (2026): Chemical Engineering Journal Storage (CEJS)-April 2026
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v6i02.26102

Abstract

Produksi kertas di Indonesia berdasarkan Balai Besar Pulp dan Kertas (BBPK) mencapai 12,98 juta ton/tahun.Kertas yang telah digunakan dan dibuang dapat menimbulkan masalah bagi lingkungan. Kandungan selulosa pada kertas sangat tinggi sehingga dapat dimanfaatkan sebagai bahan baku bioetanol. Limbah kertas HVS merupakan salah satu jenis limbah padat yang mengandung selulosa tinggi dan berpotensi dimanfaatkan sebagai bahan baku pembuatan bioetanol. Penelitian ini bertujuan untuk mengetahui pengaruh perbandingan hidrolisis asam HCl terhadap bahan baku serta waktu fermentasi terhadap kadar, densitas, dan viskositas bioetanol yang dihasilkan. Proses hidrolisis dilakukan menggunakan larutan HCl dengan perbandingan 1:2, 1:3, 1:4 dan 1:5 antara asam dan kertas HVS, kemudian difermentasi menggunakan mikroorganisme Saccharomyces cerevisiae selama 3, 5, dan 7 hari. Setelah fermentasi selesai, hasil cairan dianalisis meliputi kadar bioetanol tertinggi pada perbandingan 1:5 pada waktu fermentasi selama 5 hari dengan nilai 7,22% menggunakan piknometer, densitas (0,7881g/mL), dan viskositas (1,135mPa·s) menggunakan viskosimeter Ostwald..
Co-Authors Adi Setiawan Aditya Maulana Adit Ahmad Nayan Anwar Puteh Fauzan Ismady Juwaini Leni Maulinda Meriatna Meriatna Muhammad Muhammad Yusuf Nurdin Zulmiardi