Browsing by Author "Fermi Muhammad Iwan"

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    Evaluasi Kinerja Kompor Gasifikasi Forced Draft
    (Seminar Nasional Teknik Kimia Indonesia dan Musyawarah Nasional APTEKINDO 2012, 2012) Hermanto; Zulfansyah; Fermi Muhammad Iwan
    The availability of biomass as a source of primary energy in Indonesia is very abundant, reaching 280 million barrels of oil equivalent (BOE) and approximately 84% of the biomass has been used for the household sector. The application of gasification stove especially in cooking purposes can increase the efficiency of fuel usage. This research uses three units gasification stove with dimension stove 1 (H1 = 16 cm , D1 = 10 cm); stove 2 (H2 = 16 cm, D2 = 12 cm) and stove 3 (H3 = 20 cm, D3 = 12 cm). While the fuel was branches of acacia wood with moisture content 7.26%, 9.63% and 12.58%. Procedure water boiling test (WBT) was used to evaluating stove performance. Additional parameter such as operating time and flame temperature of the stove is including in evaluation of stove performance. The experimental results obtained average start up time is to 2 minutes and operating time of gasification stove reach to 32 minutes. Thermal efficiency of the forced draft gasification stove is approximately 25.03% to 30.44%, with the highest efficiency is on the stove with 12 cm diameter, 16 cm high and fuel with 9.63% biomass moisture content. Although the resulting flame is reddish yellow, but the forced draft gasification stove capable of producing up to 3.43 kWth thermal energy with the highest flame temperature reaches 933OC. The results show that the gasification stove operating conditions greatly affect the performance of the stove.
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    Kinerja Kompor Gasifikasi PP-Plus Berbahan Bakar Limbah Sawit
    (2012-10-31) Joel, Saut Melky; Zulfansyah; Fermi Muhammad Iwan
    Energi untuk kebutuhan memasak sektor rumah tangga di Indonesia masih bergantung pada liquified petroleoum gas (LPG) dan minyak tanah. Permasalahan distribusi dan sifat bahan bakar yang tidak dapat diperbaharui menyebabkan dibutuhkannya energi alternatif. Limbah sawit merupakan bahan bakar yang potensial sebagai alternatif (pelepah, tandan kosong dan cangkang sawit). Dengan kompor gasifikasi, penggunaan limbah sawit lebih efisien dan ramah lingkungan. Penelitian ini dilakukan untuk melihat pengaruh variasi bahan bakar dan ukuran bahan bakar terhadap kinerja kompor PPPlus dengan menggunakan analisa water boiling test (WBT). Efisiensi termal yang dihasilkan 8.25-34.44% dengan waktu start up dan waktu operasi maksimal mencapai 3.45 menit dan 31.5 menit. Penggunaan limbah sawit pada kompor PP-Plus menghasilkan firepower 2.85-6.94 kWth. Nyala api mampu mencapai suhu hingga 7820C dengan bahan bakar pelepah sawit. hasil penelitian menunjukkan adanya pengaruh variabel proses terhadap kinerja kompor gasifikasi PP-Plus
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    Pengaruh pH dan Waktu dalam Pembuatan Bioetanol dari Reject Pulp dengan Metode Sakarifikasi Ko-Fermentasi Serentak (SKFS)
    (2013-01-14) Maulana, Arbi; Chairul; Fermi Muhammad Iwan
    Reject pulp has not been harnessed into value-added products. Utilization of reject pulp containing 85.16% cellulose, 10.33% hemicellulose, lignin-klason 3.15%, 1.16% extractive-EB and 0.20% ash (ash) can be done with the Saccharification and Co- Fermentation unison (SKFS) to be converted into bioethanol. Saccharification process using the enzyme cellulase, xylanase and selobiase and co-fermentation process using the yeast Saccharomyces cerevisiae and Pichia stipitis. The purpose of this study was to determine the pH and the best time to produce bioethanol. This study varying the pH of the initial solution of 4, 4.5 and 5, and the time variation SKFS 24, 36, 48, 60, 72, 84 hours. Tests on samples made with Alkoholmeter. The results showed that the highest concentration of ethanol obtained in the SKFS to 40 g / L at initial pH 5 solution within 48 hours.