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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Sains & Matematika
Muhammad Zen, Muhammad
PT Arutmin Indonesia – NPLCT, Tanjung Pemancingan, Kotabaru, Indonesia
Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Engineering Mathematics Physics

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Bahan Bakar Padat Dari Tandan Kosong Sawit Menggunakan Proses Torefaksi Dengan Variasi Suhu Dan Waktu Torefaksi Zen, Muhammad; Helwani, Zuchra; Komalasari, Komalasari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Empty fruit bunches (EFB) can be used as alternative energy source by using torrefaction process. Torrefaction is a pre-treatment process of biomass into solid fuel within temperature range of 200-300oC in an inert condition. The Torrefaction process research aims to produce solid fuel from EFB and study the effect of process variabel towards characteristic of solid fuel resulted. Torrefaction of empty fruit bunch was using fixed bed horizontal reactor with temperature (250-300oC) and torrefaction time (15-45 minute). Product quality resulted was calorific value, mass yield, energy yield and proximate (moisture content, ash content, volatile content and fixed carbon). The result obtained for calorific value in range was 19883.03-23165.96 kJ/kg, mass yield was 47.93-71.64 %, and energy yield was 65.09-86.39 %. 17091.03-20697.13 kJ/kg, mass yield was 35.95-59.91 %, and energy yield was 50.97-72.91 %. Proximate analysis resulted in the form of moisture content was 0.40-0.73 %, ash content was 8.75-10.16 %, volatile content was 35.94-64.48 %, and fixed carbon was 26.78-53.90 %. From the result obtained, the effect of rising temperature and torrefaction time give linier effects toward the product quality. Increased temperature and torrefaction time give enhancement to the calorific value, ash content, and fixed carbon.Keywords: biomass, empty fruit bunches, solid fuel, torrefaction.
PENGGUNAAN TIPE HABITAT OLEH AVIFAUNA DI LINGKUNGAN PT ARUTMIN INDONESIA – NPLCT, KABUPATEN KOTABARU, KALIMANTAN SELATAN Soendjoto, Mochamad Arief; Riefani, Maulana Khalid; Zen, Muhammad
Sains & Matematika Vol 3, No 1 (2014): Oktober, Sains & Matematika
Publisher : Sains & Matematika

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Pengelolaan dan pemantauan lingkungan PT Arutmin Indonesia-NPLCT yang mengoperasikan pelabuhan batu bara di Kabupaten Kotabaru, Kalimantan Selatan difokuskan pada fauna laut. Avifauna diurnal di lingkungan PT Arutmin Indonesia-NPLCT belum dieksplorasi dan didokumentasikan. Tujuan penelitian adalah menganalisis penggunaan tipe habitat oleh avifauna dalam tiga periode pengamatan. Spesies avifauna diidentifi kasi pada titik/lingkar kelimpahan dan penjelajahan di hutan mangrove, hutan sekunder, permukiman/perkantoran, lahan terbuka/padang rumput/semak belukar, dan perairan. Frekuensi jumpaan setiap spesies avifauna dan frekuensi relatif penggunaan tipe habitat oleh spesies dihitung berdasarkan pada unit waktu berdurasi 5 menit per unit. Selama penelitian ditemukan 57 spesies avifauna di seluruh lingkungan tersebut. Jumlah atau keragaman spesies burung cenderung turun di perairan dan naik di empat tipe habitat lainnya mulai dari periode pengamatan pertama hingga ketiga. Hampir semua spesies ditemukan di lebih dari satu tipe habitat. Frekuensi relatif penggunaan tipe habitat oleh spesies-spesies itu bervariasi. Hanya dua spesies saja yang ditemukan 100% menggunakan satu tipe habitat untuk aktivitasnya. Environment management and monitoring of PT Arutmin Indonesia-NPLCT operating a coal port in Kotabaru Regency, Kalimantan Selatan was used to be focused on marine biota. Diurnal avifauna in the area of PT Arutmin Indonesia-NPLCT was not explored and documented. The objective of the research was to analyze the habitat type utilization by avifauna in three observation periods. Avifauna species was identifi ed in abundance points and survey in mangrove forest, secondary forest, resettlement/offi ce, open area/grassland/ shrub, and water. Scan frequency of every avifauna species and relative frequency of habitat type utilization by species were counted based on a fi ve-minute unit. Fifty seven avifauna species were found in the area. The number and the diversity of species tended to decrease on the water and increase in the other habitat types from the fi rst period to the third one. Almost all species were found in more than a single habitat type. Relative frequency of habitat type utilization by species varied. There were two species utilizing a single habitat type for their activity.
Penggunaan Tipe Habitat oleh Avifauna di Lingkungan PT Arutmin Indonesia – NPLCT, Kabupaten Kotabaru, Kalimantan Selatan Soendjoto, Mochamad Arief; Riefani, Maulana Khalid; Zen, Muhammad
Sains & Matematika Vol 3, No 1 (2014): Oktober, Sains & Matematika
Publisher : Sains & Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pengelolaan dan pemantauan lingkungan PT Arutmin Indonesia-NPLCT yang mengoperasikan pelabuhan batu bara di Kabupaten Kotabaru, Kalimantan Selatan difokuskan pada fauna laut. Avifauna diurnal di lingkungan PT Arutmin Indonesia-NPLCT belum dieksplorasi dan didokumentasikan. Tujuan penelitian adalah menganalisis penggunaan tipe habitat oleh avifauna dalam tiga periode pengamatan. Spesies avifauna diidentifi kasi pada titik/lingkar kelimpahan dan penjelajahan di hutan mangrove, hutan sekunder, permukiman/perkantoran, lahan terbuka/padang rumput/semak belukar, dan perairan. Frekuensi jumpaan setiap spesies avifauna dan frekuensi relatif penggunaan tipe habitat oleh spesies dihitung berdasarkan pada unit waktu berdurasi 5 menit per unit. Selama penelitian ditemukan 57 spesies avifauna di seluruh lingkungan tersebut. Jumlah atau keragaman spesies burung cenderung turun di perairan dan naik di empat tipe habitat lainnya mulai dari periode pengamatan pertama hingga ketiga. Hampir semua spesies ditemukan di lebih dari satu tipe habitat. Frekuensi relatif penggunaan tipe habitat oleh spesies-spesies itu bervariasi. Hanya dua spesies saja yang ditemukan 100% menggunakan satu tipe habitat untuk aktivitasnya. Environment management and monitoring of PT Arutmin Indonesia-NPLCT operating a coal port in Kotabaru Regency, Kalimantan Selatan was used to be focused on marine biota. Diurnal avifauna in the area of PT Arutmin Indonesia-NPLCT was not explored and documented. The objective of the research was to analyze the habitat type utilization by avifauna in three observation periods. Avifauna species was identifi ed in abundance points and survey in mangrove forest, secondary forest, resettlement/offi ce, open area/grassland/ shrub, and water. Scan frequency of every avifauna species and relative frequency of habitat type utilization by species were counted based on a fi ve-minute unit. Fifty seven avifauna species were found in the area. The number and the diversity of species tended to decrease on the water and increase in the other habitat types from the fi rst period to the third one. Almost all species were found in more than a single habitat type. Relative frequency of habitat type utilization by species varied. There were two species utilizing a single habitat type for their activity.
Co-Authors Komalasari Komalasari Maulana Khalid Riefani Mochamad Arief Soendjoto Zuchra Helwani, Zuchra