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Analisis Pengaruh Variasi Komposisi Bahan Baku Terhadap Kualitas Briket Dalam Aplikasi Pembakaran Aulia, M. Dava; Nahar, Nahar; Sariadi, Sariadi
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 3, No 2 (2025): Juni
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v3i2.7441

Abstract

This study examines the characteristics of briquettes from the composition of coffee grounds, wood powder and coconut shells using adhesive variations. This study was designed using independent variables, namely variations in the composition of raw materials using samples (A, B, C) % and adhesives (10, 12, 15). The raw materials are carbonized at a temperature of 300°C.  The process of making briquettes begins using charcoal crushing and uniformity of charcoal particle sizes to 40/60 mesh, charcoal mixed with tapioca flour as the adhesive material, then briquette dough is formed and molded using a pressure of 7 bars and dried in an oven at a temperature of 105°C for 2 hours. Furthermore, charcoal is characterized including 5 test parameters, namely moisture content, ash content, calorific value and combustion rate, then the best results are analyzed by Thermal Gravimetry Analysis (TGA). The best results obtained from this study were in the form of B2 samples using a ratio of 35 : 65 for coffee grounds: coconut shells using an adhesive concentration of 12%. The moisture content value was 6.12%, the ash content was 6.21%, the burning rate was 0.192 grams/minute and the calorific value was 6067.03 cal/g. The results obtained in this study stated that the moisture content, ash content, and calorific value had met SNI 01-6235-2000. The conversion of the calorific value of 1 kg of arabica briquettes creates an electric power of 6,683 kWh/kg, so to get 1 kWh of electrical energy requires 0.142 kg.
Pemanfaatan Air Kelapa dan Tepung Tapioka sebagai Bahan Baku Pembuatan Kertas Ramah Lingkungan dengan Aktivator Acetobacter Xylinum Safida, Qadrun Hanan; Harunsyah, Harunsyah; Nahar, Nahar
Jurnal Teknologi Vol 25, No 3 (2025): Desember 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i3.7855

Abstract

The use of cellulose derived from wood is increasing every year in Indonesia. This causes environmental damage that occurs continuously. In this research, paper making was carried out using coconut water and tapioca flour as raw materials as well as bacterial cellulose activator so that it is more environmentally friendly. The aim of this research is to determine the effect of variations in the mass of microbial cellulose and tapioca flour on the paper produced. The variables used in this research were the mass of microbial cellulose of 70, 75, 80, 85 90, 85 and 90 grams with variations in tapioca flour adhesive of 10, 15, 20, 25 and 30 grams. Next, the resulting paper is subjected to a grammage test, tensile strength test, water content test, functional group test (FTIR) and SEM test. In the grammage test, variations in the mass of microbial cellulose of 90 grams with a mass of tapioca flour of 30 grams had a higher grammage value than the others, namely 460 g/m2. In the tensile strength test, the highest value was in the variation of microbial cellulose mass of 80 grams with a mass of 10 grams of tapioca flour with a value of 0.930522 MPa, while in the water content test the highest value was in the variation of microbial cellulose mass of 90 grams with a mass of 30 grams of tapioca starch with a value of 17.42%.
Co-Authors A, Bakhtiar Alfian Putra Amri Amri Anisah, Yuli Anwar Anwar Arhami, Muhammad Ariani, Nita Ariefin, Ariefin Aulia, M. Dava Dewi, Ratni Diana, Selvie E. Elwina Elfiana Elfiana, Elfiana Fachraniah, Fachraniah Faisal Abdullah Halim Zaini, Halim Harunsyah, Harunsyah Humairah, Amanda Indra Mawardi Irwan Irwan Lukman Hakim M. Yunus M.T., Ridwan, Muhammad Hatta Muhammad Reza Zulman Nurdin, Irwan Pardi Pardi, Pardi Rahmi, Nur Atikah Ratna Sari Ridwan, Ridwan Safida, Qadrun Hanan Safriadi Safriadi Sami, Muhamma Sariadi Sariadi Syafruddin Syafruddin Taufik Taufik Turmizi, Turmizi Uswatun Hasanah Zulkifli Zulkifli