Articles

Found 5 Documents
Search

The Optimum Conditions of Fire Tube Boiler fuelled with Komariah, Leily Nurul
Sriwijaya International Seminar on Energy-Environmental Science and Technology Vol 1, No 1 (2014)
Publisher : Sriwijaya International Seminar on Energy-Environmental Science and Technology

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

Abstract

A various tests of biodiesel use in any combustion facility were conducted in order to comply the government mandatory regarding stages of biodiesel utilization, especially in industrial and commercial sectors. The higher biodiesel blends that applied in the boiler show a significant effect on emissions reduction but followed by a reduction in boiler efficiency and an increase in fuel consumption. This study was carried out using palm oil-based biodiesel in the fire tube boiler with 3 bar operating pressure and heat input of 60,000 kcal/hour. In this study, an adjustment scale of the fan damper is conducted in order to control the amount of excess air that enters the combustion chamber. This study showed that the more percentage of biodiesel in fuel blends, the amount of combustion air must reduced. This mechanism was effective through fine-tuning of the fan damper scale. This adjustment may result an increase in efficiency of 0.64 to 2.6%.
Breakdown of Water-in-Oil Emulsion on Pyrolysis Bio-Oil Zen, Muhammad Rizky; Arita, Susila; Komariah, Leily Nurul
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 4, No 2 (2019): June 2019
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v4.i2.53

Abstract

The pyrolysis bio-oil which has been studied by many researchers has typically contained a high amount of water, around 20-30%. In this research, the effective bio-oil purification using chemical demulsification method has been studied to reduce the amount of water by breaking down the water-in-oil emulsion on pyrolysis bio-oil. A various dosage of chemical demulsifier (100 ppm, 150 ppm, 200 ppm, and 250 ppm) has been added into the pyrolysis bio-oil and the water separation over time also been observed. The temperature of bio-oil (30, 40, 50, 60, and 70 °C) was also studied as a factor that could have a significant effect on the demulsification process of pyrolysis bio-oil. After the injection of 250 ppm of demulsifier at 30 °C, the water separation reached a maximum of 72% in 60 minutes and could reduce the water content from 25% to 8.5%. At the temperature of 60oC and 250 ppm of demulsifier, the water separation reached a maximum of 96% in 35 minutes, and successfully reduced the water content from 25% to 1.3%. Finally, it has been concluded that this bio-crude purification using chemical demulsification method could be applied to effectively reduce the amount of water from pyrolysis bio-oil product.
Synthesis and Characterization of ZSM-5 Catalyst for Catalytic Pyrolysis of Empty Fruit Bunches Rahmiyati, Lutfia; Arita, Susila; Komariah, Leily Nurul; Nazarudin, Nazarudin; Alfernando, Oki
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 4, No 2 (2019): June 2019
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v4.i2.72

Abstract

ZSM-5 is known as a heterogeneous catalyst in the process of petroleum cracking. Zeolite has narrow pores so it needs synthesis to form mesopore so that reactant molecules can enter the active site in ZSM-5 mesopore. In this study, mesopore formation was carried out by adding Si/Al components with a ratio of 20 derived from tetraethyl orthosilicate, aluminum isopropoxide and TPAOH template with hydrothermal process. The resulting ZSM-5 was characterized using x-ray diffraction, scanning and electron microscopy (SEM). The XRD characterization results showed that the ZSM-5 synthesized to form mesopore was seen from a fairly high peak intensity in the range at 2-theta were 8.11, 9.01°; 23.27°; 23.49°; and 24.13°. The results of this study already have the same structure as the commercial ZSM-5. Characterization of SEM-EDS showed that Si-Al and Na elements in ZSM-5 were 96.43%, 3.56% and 0% wt, respectively. With a magnification of 20000x, this cluster is quite homogeneous even though the crystallization formed is not well aggregated. This ZSM-5 catalyst will be applied to the process of biomass into bio-oil.
The Effect of H-USY Catalyst in Catalytic Cracking of Waste Cooking Oil to Produce Biofuel Rosmawati, Rosmawati; Arita, Susila; Komariah, Leily Nurul; Nazarudin, Nazarudin; Alfernando, Oki
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 4, No 2 (2019): June 2019
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v4.i2.67

Abstract

The crisis in petroleum is caused by the diminishing supply of petroleum resources from nature. This phenomenon encourages researchers to continue to look for processes and methods to produce energy from other resources. One of these ways is to produce energy that can be utilized from waste, including converting waste cooking oil into biofuel. This method not only could provide a source of renewable energy, but also help resolve the issue of household waste. The process used to produce biofuel from waste cooking oil is by catalytic cracking, where waste cooking oil after pretreatment is converted into biofuel in the flow reactor with H-USY catalyst. In this research, the reaction temperatures used are 400 °C, 450 °C, 500 °C and 550 °C and reaction times are 30, 45 and 60 minutes with the mass ratio of the amount of waste cooking oil to the amount of catalyst used is 40:1 (w/w). The highest yield of liquid biofuel product was obtained at 60.98%. The use of H-USY catalyst shows that the distribution of components contained in biofuel are 28.02% of diesel products (C17 -C20), 23.96% of gasoline (C6 –C12) and 7.78% of Heavy oil (C20 >) in catalytic cracking of waste cooking oil with a reaction time of 45 minutes at a temperature of 450 °C.
Pelatihan dan pendampingan pengolahan sampah organik menjadi pupuk kompos di desa burai Cundari, Lia; Arita, Susila; Komariah, Leily Nurul; Agustina, Tuty Emilia; Bahrin, David
Jurnal Teknik Kimia Vol 25 No 1 (2019): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

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

Abstract

Sampah merupakan material sisa dari suatu proses yang memiliki dampak bahaya untuk lingkungan dan kesehatan. Solusi dari dampak tersebut adalah penanggulangan sampah dengan perancangan dan pembuatan alat, serta pelatihan dan pendampingan yang berhubungan dengan pengolahan sampah. Kegiatan ini merupakan pengabdian kepada masyarakat bagi warga Desa Burai, Kecamatan Tanjung Batu, Kabupaten Ogan Ilir, Sumatera Selatan dimana sampah organik diubah menjadi pupuk kompos. Proses pembuatan pupuk kompos dilakukan dengan 3 tipe yaitu, kompos celup, kompos padat-cair, dan kompos padat. Kapasitas sampah organik yang diolah sebanyak 8 kg dan proses berlangsung selama 20-40 hari. Kompos cair yang dihasilkan dari proses celup sebanyak 4,5 Liter. Untuk komposter padat-cair telah dihasilkan kompos cair sebanyak 1,8 liter, kompos padatnya sebanyak 2,1 kg. Untuk komposter padat, dihasilkan kompos padat sebanyak 2,6 kg. Tingkat pengetahuan warga terhadap pengelolaan sampah secara umum masih relatif kecil, secara rata-rata hanya 48%. Hal ini dipengaruhi oleh pendidikan warga yang tingkat dasar (SD) mencapai 48%. Untuk pengalaman warga dalam mengelola sampah sudah cukup baik, yaitu sebanyak 53%. Persepsi masyarakat terhadap pengelolaan sampah rumah tangga sudah baik, yaitu sebanyak 71% menyatakan setuju atas upaya pengelolaan sampah. Dengan tingkat persepsi yang tinggi tersebut tidak mendorong tingginya tingkat partisipasi warga terhadap pengelolaan sampah. Sebanyak 41-57% warga tidak pernah berpartisipasi baik secara langsung maupun tidak langsung terhadap pengelolaan sampah rumah tangga.