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Analysis of downdraft low rank coal performance gasification by variations coal to syngas product Erwin Erwin; Aida Syarif; Muhammad Yerizam
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 1 (2022): February 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i1.01

Coal resources are inclusive (reserves are part of the resource), of which 48% is located in South Sumatra, with 70% of the deposits being brown or low-quality coal. With the high amount available, the direct use of coal has several shortcomings, one of which is that coal releases gases (CO2, N2O, NOx, SOx and Hg) which cause global warming. Coal gasification is a process for converting solid coal into a gas mixture that has a fuel value. Coal gasification will produce producer gas in the form of synthetic gas (syngas) with the main components consisting of carbon monoxide (CO), hydrogen (H2), and methane gas (CH4). By converting coal using gasification as a clean energy producer, a blower as a regulator of air flow, a cyclone as a tar separator and a gas cooler. Based on the results of testing the variation of coal used, the variation of 5515 Kcal / Kg coal has a rapid rise in temperature and is able to produce a flame for 115 minutes. with the composition of Syngas CO and CH4 of 12.4% an 1.2%, while the coal variation of 4640 kcal/kg produces the highest H2 of 6.9%. Coal 5515 kcal/kg produces the largest percentage of syngas conversion, carbon conversion, Low Heating Value, power output and stove efficiency, namely 13.46%, 70.397%, 2.427 MJ/kg, 18.403 KW and 31.23%

Characterization of Fly Ash Catalyst Using XRD Method for Biofuel Production from Used Cooking Oil Dina Eka Pranata; Aida Syarif; Muhammad Yerizam
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 6, No 3 (2021): October 2021
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v6.i3.90

Fly ash catalyst that has been activated using NaoH 2M was analyzed using XRD at an angle of 2θ = 15 ° - 80 ° with a wavelength (λ) of X rays of 0.15406 nm. From the results of the analysis, the NaO26Si6Y9 compound is obtained with a hexagonal structure. Furthermore, the XRD analysis results obtained in the form of wavelength, intensity, 2θ and FWHM values will be substituted into the Debye Scherrer equation to calculate the size of the crystal structure of the Fly Ash catalyst. From this equation, a graph of the relationship between ln(b) dan ln(1/cos(q )) will be drawn so that the intercept value is - 4.0688 and the value of K = 0.9 and λ = 0.15406 nm. The value of K and λ can be calculated using the modified Debye Scherrer equation, so that the crystal size (D) is 8,10942 nm.

Effect of Oxygen Flow Rate on Combustion Time and Temperature of Underground Coal Gasification Apriansyah Zulatama; Aida Syarif; Muhammad Yerizam
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 2 (2021): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Underground Coal Gasification (UCG) is a process of converting coal in the ground into synthetic gas that has economic value. In the UCG process which will be carried out in the UCG prototype assisted by the presence of oxygen as a gasification agent, which this gasification agent will help the process of burning coal in the ground. The flow rate of oxygen in the process of UCG affecting the coal combustion temperature and effective flame from burning coal. The highest temperature at a flow rate of 5 l/min is 240oC, at an oxygen flow rate of 3 l/min the highest temperature is 143oC and at an oxygen flow rate of 2 l/min the highest temperature is 135oC and time effective flame at a flow rate of 5 l / min ie 80 minutes, effective burning time on the speed of the flow rate of 3 l / min ie for 120 minutes and time effective flame at a flow rate of 2 l / min ie for 165 minutes. This study proves that the greater the oxygen flow rate is used as the gasification agent at UCG process the lignite coal combustion temperatures will be high and effective flame coal combustion process will be more brief.

Syngas Characteristics from UCG Gasification Process with Lignite and Subbituminous Coal Types Sarmidi; Muhammad Yerizam; Aida Syarif
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 2 (2021): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Underground Coal Gasification (UCG) is the process of converting the materials used to make synthetic gas in a feasible and economically attractive manner as a method for harnessing energy from underground coal sources. Coal gasification will produce a gas producer in the form of synthetic gas (syngas) with the main components consisting of carbon monoxide (CO), hydrogen (H2), carbon dioxide (CO2) and nitrogen (N2) and low pollutants. The highest temperature produced with MT 47 lignite coal using an oxygen velocity of 5 liters/minute was 2400 C at the 35th minute, while the lowest temperature was 950 C at the 95th minute. For Subbituminous AL 51 coal using an oxygen velocity of 5 liters/minute, the highest temperature is 3540 C at 75 minutes, while the lowest temperature is 1060 C at 130 minutes. At an oxygen velocity of 5 liters/minute the flash point / burn test is on the MT 47 lignite coal type in the 10th minute and at a temperature of 1700 C. Meanwhile, the AL 51 subbituminous coal type is in the 30th minute and at a temperature of 3130 C. Based on the discussion and analysis of data from the gasification test of lignite and subbituminous coal with variations in oxygen velocity of 5 liters/minute, the results obtained are that lignite coal burns faster (burn test) in the 10th minute at a temperature of 1700 C, in the subbituminous type it has higher temperature 3130 C and longer burn test at 30 minutes.

Karakterisasi Minyak Jelantah Hasil Produksi Keripik Nenas Dengan Metode Vacuum Frying Rusdianasari Rusdianasari; Leila kalsum; Aida Syarif; Yohandri Bow
Aptekmas Jurnal Pengabdian pada Masyarakat Vol 2, No.2 (2019) : APTEKMAS Volume 2 Nomor 2 2019
Publisher : Politeknik Negeri Sriwijaya

Small and medium businesses (SMEs) have developed rapidly in Indonesia, especially for the food sector. One of the most productive UKM in Prabumulih city is UKM Melati which produces pineapple chips from pineapple which is a regional superior product from Prabumulih city. To get dried and tasty pineapple chips, frying is done by using a vacuum frying method that requires a lot of cooking oil. The results of vacuum drying frying will produce used browning frying oil or used cooking oil and cannot be reused if the characteristics of used cooking oil exceed the standard. For this reason, an analysis is needed to determine the characteristics of used cooking oil from the results of the production of pineapple chip vacuum vacuum frying methods. From the results of the analysis that has been carried out on filtered used cooking oil, the value of free fatty acid (FFA) is 4.9% (maximum requirement 0.3%) and peroxide value 1.8 Meq/kg. Thus, used cooking oil cannot be used anymore for frying.

Biocoal Characterization as an Environmentally Friendly Alternative Energy Innovation Composite Variations of Gasified Char with Coconut Shell Charcoal Aria Yopianita; Aida Syarif; Muhammad Yerizam; Rusdianasari Rusdianasari
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 2 (2022): June 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i2.68

In accordance with the mandate of the Regulation of the Indonesian Minister of Energy and Mineral Resources for the use of cleaner coal through coal gasification projects, in the future the coal gasification industry will produce char as a by-product. This study aims to characterize coal gasification char using a prototype underground coal gasification (UCG) and the addition of coconut shell charcoal biomass as a raw material for making biobriquettes. By using coal as raw material from the Muara Tiga Besar Mine of PT Bukit Asam, five kinds of coal samples from different layers were obtained, which from the characterization results, both coal and char, did not have too significant deviations so that the research variables could be ignored. The results of the characterization of char from coal gasification results compared to the initial sample of coal showed an increase in calorific value, a decrease in sulfur content and a significant decrease in water content, so it can be concluded that char from coal gasification has good potential as a raw material for biobriquettes. By using char and coconut shell charcoal with the ratio of variations in the composition of char and coconut shell compositions is 100%:0%; 75%:25%; 50%:50%; 25%:75% and 0%:100% carried out the briquetting process. The results of the biobriquette characterization met the criteria of the Indonesian National Standard (SNI) 01-6235-2000 and Minister of Energy and Mineral Resources regulation No. 047 of 2006

Analisa Konsentrasi NaOH dan Temperatur Pemanasan Terhadap Kadar Selulosa dan Kadar Lignin dari Batang Pisang Klutuk Menggunakan Alat Delignifikasi sebagai Bahan Baku Pembuatan Bioetanol. Rafit Arjeni; Abu Hasan; Aida Syarif
Jurnal Inovator Vol 5 No 1 (2022): Teknologi proses Manufaktur
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/ji.v5i1.219

Indonesia is a country with the largest energy consumption in southeast asia and fifth in asia pacific in primary energy consumption, after a chinese, india, japan, and south korea. If considered sectorally, so having the greatest share of the transportation sector, is as much as 42%, higher than the industrial sector with of 36. Hence the need of the use of environmentally friendly alternative energy and new and renewable energy ( ebt bioetanol ) as. Bioetanol can come from organic waste as klutuk stems of a banana tree. To research it will study and to making delignifikasi adsorbsi klutuk bioetanol of a banana stem. To research will be done study delignifikasi and adsorbsi to making bioetanol of a banana stem klutuk. First, perform the process pratreatmen and delignifikasi in a banana stem klutuk with variations konsetrasi naoh 10%, 20%, 30% and temperature warming namely 100oC, 125oC, 150oC, 175oC, and 100oC. At the delignifikasi this can be said that on the concentration naoh 10% in 150oC, warming temperatures produce levels of cellulose and lignin best, to the cellulose and lignin 81,3% levels 10,1%. A banana stem fiber that has been in delignifikasi, next will be done and also hydrolysis fermentation to produce bioetanol. Bioetanol produced the application will be done distillation to separate bioetanol and water. Bioetanol next analysis used a gcms and obtained bioetanol 80,34%.

Delignification and Adsorption Research of Bioethanol Process using Pseudostem of Musa Balbisiana (Pisang Klutuk) as the Blending Raw Material to Gasohol Rafit Arjeni; Abu Hasan; Aida Syarif
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 1 (2023): February 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i1.1

Indonesia is a country that has the most energy sources in the Southeast of Asia and the fifth in Asia-Pacific subsequent to China, India, Japan and South Korea. Energy usage in Indonesia in 2016 was still dominated by 47% fuel oil. If the energy usage increases continuously, energy sustenance and resilience in Indonesia will be plagued. Therefore, there is a necessary to utilize the alternative energy sources that would be earth-friendly as well New and Renewable Energy (EBT) like bioethanol. Bioethanol can be produced by organic wastes, pseudostem of Musa Balbisiana (Pisang Klutuk) as the example. This research is focused on the study of delignification and adsorption of the process of bioethanol using pseudostem of Musa Balbisiana as the blending raw material to gasohol. The process started with the pre-treatment and delignification of the pseudostem of Musa Balbisiana with the sorts of NaOH concentration including the following of 10%, 20%, 30% and 100oC, 125oC, 150oC, 175oC, dan 200oC for the heating temperatures. In delignification, it can be stated that the concentration of 10% NaOH on 150oC temperature produced the finest cellulose and lignin content with the amount of 81,3% cellulose and 10,1% lignin. The pseudostem fibers that have passed the process of delignification, was done to the process of hydrolysis and fermentation for producing bioethanol. The result of Bioethanol was carried out to the process of distillation for separating bioethanol and water. Continuing the process, bioethanol was purified in adsorption and distillation process. In adsorption, the 5gr, 10gr, 15gr, 20gr, and 25gr adsorbent alloyed to the purified bioethanol, and it can be claimed that the highest rate of purified bioethanol is 20gr with the 99,11% bioethanol content. The 99,11% bioethanol content was blending with Pertalite with the ratios of 5:95, 10:90, 15:85, 20:80, and 25:75, thereafter it was analyzed the RON content which obtained the highest point that is 97,48 on 25:75 ratio.

Analisa Konsentrasi NaOH dan Temperatur Pemanasan Terhadap Kadar Selulosa dan Kadar Lignin dari Batang Pisang Klutuk Menggunakan Alat Delignifikasi sebagai Bahan Baku Pembuatan Bioetanol. Rafit Arjeni; Abu Hasan; Aida Syarif
Jurnal INOVATOR Vol. 5 No. 1 (2022): Teknologi Proses Manufaktur
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v5i1.151

Indonesia is a country with the largest energy consumption in southeast asia and fifth in asia pacific in primary energy consumption, after a chinese, india, japan, and south korea. If considered sectorally, so having the greatest share of the transportation sector, is as much as 42%, higher than the industrial sector with of 36. Hence the need of the use of environmentally friendly alternative energy and new and renewable energy ( ebt bioetanol ) as. Bioetanol can come from organic waste as klutuk stems of a banana tree. To research it will study and to making delignifikasi adsorbsi klutuk bioetanol of a banana stem. To research will be done study delignifikasi and adsorbsi to making bioetanol of a banana stem klutuk. First, perform the process pratreatmen and delignifikasi in a banana stem klutuk with variations konsetrasi naoh 10%, 20%, 30% and temperature warming namely 100oC, 125oC, 150oC, 175oC, and 100oC. At the delignifikasi this can be said that on the concentration naoh 10% in 150oC, warming temperatures produce levels of cellulose and lignin best, to the cellulose and lignin 81,3% levels 10,1%. A banana stem fiber that has been in delignifikasi, next will be done and also hydrolysis fermentation to produce bioetanol. Bioetanol produced the application will be done distillation to separate bioetanol and water. Bioetanol next analysis used a gcms and obtained bioetanol 80,34%.

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