scholarly journals CHARACTERIZATION OF COAL SEAMS IN THE ARANTIGA AND SELUANG MINE BENGKULU USING PROXIMATE ANALYSIS DATA

2020 ◽  
Vol 6 (3) ◽  
pp. 197-204
Author(s):  
Rafi Maulana ◽  
Ordas Dewanto ◽  
A Raka Abriyansyah
Keyword(s):  
Bituminous Coal ◽  
Analysis Data ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Total Sulfur ◽  
Coal Seams ◽  
Fixed Carbon ◽  
Caloric Value ◽  
Average Value ◽  
Coal Type

Indonesia as a country that has ample large coal reserves spread across the Sumatera and Kalimantan islands. The huge potential in the region needs further research to be able to find out the quality and excellence of coal resources in order to know the characteristics in detail, then the research was carried out in the Bengkulu Province area by testing coal sample based on Proximate analysis to obtain accurate coal quality results and analysis of coal characteristics in the area can be carried out. The results show that the coal seams in the Arantiga mine have an average value Inherent Moisture is worth 7.49 %, ASH is worth 9.82 %, Volatile Matter is worth 40.99 %, Fixed Carbon is worth 41.70 %, Total Sulfur is worth 0.34 %, Gross Caloric Value is worth 6305 kcal/kg and including of High Volatile A Bituminous coal type, while the Seluang mine has an average value Inherent Moisture is worth 2.07 %, ASH is worth 22.92 %, Volatile Matter is worth 20.26 %, Fixed Carbon is worth 54.78 %, Total Sulfur is worth 0.55 %, Gross Caloric Value is worth 6365 kcal/kg dan and including of Medium Volatile Bituminous coal type.

scholarly journals Proximate and Ultimate Charaterization of Coal Samples from Southwestern Part of Ethiopia.

2019 ◽  
Vol 9 (2) ◽  
pp. 1643-1648
Keyword(s):  
Depositional Environment ◽  
Bituminous Coal ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Ash Content ◽  
Chemical Parameters ◽  
Fixed Carbon ◽  
Soft Coal ◽  
Analytical Assessment

This study aimed to characterize the coal in terms of proximate and ultimate analyses. The analytical assessment of properties such as volatile matter, moisture, fixed carbon, and ash content are very important to know the quality of the coal. The proximate analysis results shows that the moisture content varies from 13.4 to 22.6 wt%, the fixed carbon varies from 26.7 and 38 wt%, the ash content varies from 11.9 to 25.7 wt%, the volatile matter varies from 23.8 to 36.5iwt%. The analytical results show that the Carbon content varies from 48.60 to 70.68 wt%, Oxygen content varies from 42.29 to 57.38 wt%, the hydrogen content ranges from 4.43 to 5.28 wt%, the sulphur varies from 1.35 toi3.04 wt%, the Nitrogen content varies from 1.86 to 2.34 wt%. Proximate analysis and calorific data show that Ethiopian coal is in the soft coal series (lignite to bituminous coal) and is genetically classified as humic, sapropelic and mixed coal. The present study helps to characterize the coal type and also highlights the importance of chemical parameters in characterizing the coal besides, tracing the depositional environment and also helps to the economical evolutions of the deposit

scholarly journals PERBANDINGAN NILAI BAKAR BRIKET BATUBARA DAN BRIKET ARANG (CAMPURAN CANGKANG BINTARO (Cerbera Manghas) DAN BAMBU BETUNG (Dendrocalamus Asper)

2019 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Ida Febriana ◽  
Zurohaina Zurohaina ◽  
Sahrul Effendy
Keyword(s):  
Alternative Energy ◽  
Bituminous Coal ◽  
Raw Materials ◽  
Calorific Value ◽  
Volatile Matter ◽  
Carbonization Temperature ◽  
Fixed Carbon ◽  
Alternative Energy Source ◽  
Tapioca Flour ◽  
Cerbera Manghas

Charcoal briquettes are smokeless fuels which are a type of solid fuel whose fly substance is made low enough so that the smoke generated on its utilization will not interfere with health. In this study charcoal briquettes were made from bintaro shell waste and betung bamboo using tapioca flour adhesives. This study aims to obtain the best quality sub-bituminous coal briquettes and coal briquettes. In this study the carbonization temperature used was 400ᵒC and the composition of raw materials for bintaro shells and betung bamboo was 50:50, the composition of raw materials for sub-bituminous coal and straw 90:10. The method used in this research is experiment or experimental method, with fuel value collection using ASTM D5865-03 standard. The results obtained from this study are for charcoal briquettes with 4000C carbonization temperature Inherent Moisture value of 1.91%, ash 2.29%, volatile matter 23.79%, fixed carbon 72.01% and calorific value 5878.7 kal / gr, and for coal briquettes obtained value Inherent Moisture 0.52%, ash 4.42%, volatile matter 17.98%, fixed carbon 77.08% and calorific value 7152.6 kal / gr. The fuel value of coal briquettes is greater than that of charcoal briquettes, but the combustion value of charcoal briquettes includes a good calorific value as an alternative energy source, and is in accordance with the SNI standard of 5000 kal / gr, even close to the Japanese standard 6000 cal / gr. Keywords: Bintaro, briquette, calorific value

scholarly journals Physiochemical Properties of Cotton Stalk Biomass from Aricultural Residues

2015 ◽  
Vol 10 (1) ◽  
pp. 343-349 ◽  
Author(s):  
Dobariya Umesh ◽  
P Sarsavadiya ◽  
Krishna Vaja ◽  
Khardiwar Mahadeo
Keyword(s):  
Calorific Value ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Agricultural Residues ◽  
Ash Content ◽  
Cotton Stalk ◽  
Fixed Carbon ◽  
Physiochemical Properties ◽  
Feed Stock ◽  
Energy Conversion Process

The study was undertaken to investigate the properties of cotton stalk fuel from the agricultural residues. The whole cotton stalk plant is converted into shredded material with the help of cotton stalk shredder. The capacity of cotton stalk shredder machine is 218 kg/h. The proximate analysis of the shredded cotton stalk in terms of bulk density 34.92 kg / m3 moisture content 13.63 %, volatile matter 74.52 %, ash content (4.95 %, fixed carbon 20.53 % and calorific value of cotton stalk biomass (3827 cal/g) respectively. were showed that agricultural residues are the most potential and their quantitative availability, Since the aim by using shredded cotton stalk as feed stock for energy conversion process of the developed gasifier.

scholarly journals Preliminary Study of Microwave Irradiation Towards Oil Palm Empty Fruit Bunches Biomass

2021 ◽  
Vol 4 (2) ◽  
pp. 133-137
Author(s):  
Muhammad Iqbal Ahmad ◽  
Mohd Sukhairi Mat Rasat ◽  
Shahril Nizam Mohamed Soid ◽  
Mazlan Mohamed ◽  
Zairi Ismael Rizman ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Oil Palm ◽  
Power Input ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Fixed Carbon ◽  
Empty Fruit Bunches ◽  
Preliminary Study ◽  
Oxidative Atmosphere

In this study, torrefaction via microwave irradiation was introduced towards oil palm empty fruit bunches (EFB) samples. The samples of 10 g was fed into the quartz type crucible inside the microwave with the power input limit to 385 W. Continous nitrogen up to 50 ml/min were induced and promoted the non oxidative atmosphere in the closed crucible. This proved the increased of energy properties as high 23.6 MJ/kg for torrefied samples comparable to raw 14.8 MJ/kg. On the result of proximate analysis, fixed carbon shows the increase trends whereby the volatile matter decreased. Torrefaction has been found to improve the energy properties of oil palm EFB biomass as a fuel.

scholarly journals The Investigation of Mercury Contents in Polish Coal Samples

2013 ◽  
Vol 39 (2) ◽  
pp. 141-150 ◽  
Author(s):  
Michał Wichliński ◽  
Rafał Kobyłecki ◽  
Zbigniew Bis
Keyword(s):  
Electricity Generation ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Mercury Content ◽  
Hard Coal ◽  
Fixed Carbon ◽  
Heating Value ◽  
High Heating Value ◽  
Enrichment Process

Abstract This paper presents the results of the investigation associated with the determination of mercury content in Polish hard coal and lignite samples. Those coals are major fuels used for electricity generation in Poland. The results indicated that the average content of mercury in the coal samples was roughly about 100 ng/g. Apart from the determination of the mercury contents a detailed ultimate and proximate analysis of the coal samples was also carried out. The relationships between the mercury content and ash, as well as fixed carbon, volatile matter, sulfur, and high heating value of the coal samples were also established. Furthermore, the effect of coal enrichment was also investigated, and it was found that the enrichment process enabled the removal of up to 75% of the coal mercury from the samples.

Compositional and experimental investigation of the effect of reactor temperature on softwood and hardwood pyrolysis

2018 ◽  
Vol 15 (1) ◽  
pp. 21-26
Author(s):  
Joseph Adewumi Oyebanji ◽  
Sunday Olayinka Oyedepo
Keyword(s):  
Design Methodology ◽  
Pyrolysis Temperature ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Initial Weight ◽  
Fixed Carbon ◽  
Heating Value ◽  
Content Type ◽  
Reactor Temperature ◽  
Temperature Levels

Purpose This study aims to investigate the effect of reactor temperature on softwood and hardwood pyrolysis. Experiments are performed at six temperature levels ranging from 300 to 800°C under N2 atmosphere. The weights of char, tar and gas yields produced were measured and recorded in percentage of initial weight of the pyrolyzed samples. Results of the study showed that hardwood produces maximum char, tar and gas yields of 41.02 per cent at 300°C,44.10 per cent at 300°C and 56.86 per cent at 800°C, respectively, whereas softwood produces maximum yields of 30.10 per cent at 300°C, 28.25 per cent at 300°C and 68.73 per cent at 800°C, respectively. Proximate analysis shows that volatile matter, fixed carbon, ash content and moisture content of hardwood are 74.83, 14.28, 2.81 and 8.08 per cent, respectively, and that of softwood are 79.76, 12.65, 0.98 and 6.61 per cent, respectively. Result of the elemental analysis results shows that the carbon, hydrogen, nitrogen, oxygen and sulphur contents for hardwood are 52.20, 6.45, 0.68, 39.64 and 1.03 per cent, respectively, and that of softwood are 45.95, 4.57, 0.56, 48.13 and 0.79 per cent, respectively. The higher heating value of hardwood and softwood are 21.76 and 16.50 kJ/g respectively. This study shows that char and tar yields decrease with increase pyrolysis temperature, whereas gas yield increases as pyrolysis temperature increases for the wood samples considered. At all temperatures considered in this study, gas yields are higher than tar and char yields for softwood, whereas for hardwood, tar yield decreases with increase in temperature with accompanying increase in gas yield. Design/methodology/approach Experiments are performed at six temperature levels ranging from 300 to 800°C under N2 atmosphere. Findings At all temperatures considered in this study, gas yields are higher than tar and char yields for softwood, whereas for hardwood, tar yield decreases with increase in temperature with accompanying increase in gas yield. Originality/value Results of the study showed that hardwood produces maximum char, tar and gas yields of 41.02 per cent at 300°C,44.10 per cent at 300°C and 56.86 per cent at 800°C, respectively, whereas softwood produces maximum yields of 30.10 per cent at 300°C, 28.25 per cent at 300°C and 68.73 per cent at 800°C, respectively.

STUDI PENGARUH PENGGUNAAN CAIRAN SURFAKTAN WETTING AGENT PADA PROSES BARGING BATUBARA

2018 ◽  
Vol 4 (01) ◽  
Author(s):  
I Wayan Murdiana ◽  
Agus Triantoro ◽  
Adip Mustofa
Keyword(s):  
Calorific Value ◽  
Volatile Matter ◽  
Ash Content ◽  
Wetting Agent ◽  
Total Sulfur ◽  
Fixed Carbon

Di Indonesia, kususnya di wilayah Kalimantan selatan merupakan salah satu wilayah yang memiliki banyak sumberdaya batubara. Batubara adalah salah satu energy alternative di Indonesia yang cukup besar cadangannya. Dalam pemanfaatannya, batubara harus diketahui terlebih dahulu kualitasnya, kualitas batubara merupakan faktor dalam pengambilan keputusan oleh pihak konsumen untuk memilih produk yang dihasilkan oleh produsen. Untuk dapat mengetahui serta memperoleh data kualitas batubara yang dihasilkan selama proses produksi perlu dilakukan kegiatan pengukuran kualitas batubara antara lain total sulfur (TS), ash content (AC), volatile matter (VM), inherent moisture (IM), fixed carbon (FC), calorific value (CV), dan total moisture (TM).Metode analisa yang digunakan untuk kualitas batubara adalah America Society for Testing (ASTM) meliputi pengujian, menghitung Total Moisture (TM) batubara yang sebelum dan setelah disemprot dengan cairan surfaktan wetting agent dan menghitung ash Sampel batubara sebelum dan setelah disemprot dengan cairan surfaktan wetting agent.Berdasarkan hasil pengujian yang telah dilakukan bahwa rata-rata TM batubara sebelum disemprot dengan cairan surfaktan wetting agent adalah 37,762% dan TM batubara setelah disemprot engan cairan surfaktan wetting agent adalah 36,105%. Sedangkan rata-rata nilai ash batubara sebelum disemprot dengan cairan surfaktan wetting agent adalah 5,78% dan nilai ash setelah disemprot dengan cairan surfaktan wetting agent adalah 5,58%. Kata-kata kunci: Batubara, Surfaktan Wetting agent.

Fuel Characteristics Research and Regression Analysis for Blend Fuel of Biomass and Coal

2011 ◽  
Vol 71-78 ◽  
pp. 2006-2009
Author(s):  
Zhi Wei Wang ◽  
Ting Zhou Lei ◽  
Feng Yue ◽  
Xiao Feng He ◽  
Jin Ling Zhu
Keyword(s):  
Regression Analysis ◽  
Sulfur Content ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Regression Equations ◽  
Corn Stalk ◽  
Fixed Carbon ◽  
Heat Value ◽  
Blend Fuel ◽  
Blend Ratios

Blend fuel of corn stalk and coal was made in a series of blend ratios with corn stalk mass percent ranging from 10 to 90%. Several data were gotten by proximate analysis with considering indexes of volatile matter, fixed carbon, sulfur content, heat value and ash. The regression equations of the data were gotten through regression analysis for the relationship between blend ratios of corn stalk(BRCS) and proximate analysis data(PAD)．The result showed that there was linear relation between PAD of the blend fuel and BRCS, and linear equation slope absolute value of volatile matter, fixed carbon, sulfur content, heat value and ash were 8.49,7.64,5.45,4.85,3.97, respectively. Volatile matter content increased with the increase of BRCS, and other PAD was opposites. Variation rate and variation tendency of the blend fuel PAD was gotten through proximate analysis and fitted equation, and some references may be provided for utilization of blend fuel of biomass and coal.

scholarly journals Quality Assessment of the Permian Coals from Dighipara Basin, Bangladesh Based On Proximate, Ultimate and Microscopic Analyses

2015 ◽  
Vol 39 (2) ◽  
pp. 177-194
Author(s):  
Md Farhaduzzaman ◽  
Wan Hasiah Abdullah ◽  
Md Aminul Islam ◽  
Say Gee Sia
Keyword(s):  
Calorific Value ◽  
Volatile Matter ◽  
Thermal Maturity ◽  
Coal Seams ◽  
Fixed Carbon ◽  
Gross Calorific Value ◽  
Coal Quality ◽  
Coal Core ◽  
Coal Facies ◽  
Academy Of Sciences

Assessment of coal quality based on proximate (volatile matter, fixed carbon, ash, moisture), ultimate (C, H, N, S, O) and microscopic (macerals, microlithotypes, coal facies) analyses of the Permian coals from the Dighipara basin, Bangladesh was carried out. A total of 11 coal core samples collected from two bore holes of Dighipara basin were analyzed. ASTM standards were followed for proximate and ultimate analyses. ICCP systems were used for the microscopic study. Thermal maturity, physical characteristics of the coal seams, gross calorific value and atomic ratios of H/C and O/C were also considered.Journal of Bangladesh Academy of Sciences, Vol. 39, No. 2, 177-194, 2015

scholarly journals ANALISIS MINERALOGI DAN KUALITAS BATUBARA DESA KADINGEH, KECAMATAN BARAKA, KABUPATEN ENREKANG, SULAWESI SELATAN

2019 ◽  
Vol 7 (2) ◽  
pp. 114-123
Author(s):  
Muhammad Fuad Avicenna ◽  
Sufriadin Sufriadin ◽  
Agus Ardianto Budiman ◽  
Sri Widodo
Keyword(s):  
Volatile Matter ◽  
Total Sulfur ◽  
X Ray Diffraction ◽  
Fixed Carbon ◽  
X Ray

Batubara Kadingeh di Kecematan Baraka, Kabupaten Enrekang, Provinsi Sulawesi Selatan secara geografis terletak pada titik koordinat: 03o28’31” Lintang Selatan dan 119o52’41” Bujur Timur dan termasuk dalam kategori rank batubara Subbituminous. Hal tersebut dibuktikan dengan beberapa hasil analisis yang telah dilakukan. Analisis mikroskopis menunjukkan bahwa terdapat dua mineral yang dominan seperti clay dan pirit. Sedangkan hasil analisis X-ray diffraction (XRD) batubara Desa Kadingeh menunjukkan kandungan mineral-mineral seperti kuarsa, goethit, illit dan pirit. Hasil analisis kualitas batubara menunjukkan bahwa kandungan inherent moisture berkisar dari 9,75%-11,17%, kandungan abu berkisar dari 3,54%-8,42%, volatile matter berkisar dari 25,26%-27,32%, fixed carbon berkisar dari 53,09%-61,45%, total sulfur berkisar dari 0,15%-0,21%, dan nilai kalori berkisar dari 5366,06 kcal/kg-6164,59% kcal/kg. Berdasarkan klasifikasi batubara menurut ASTM (1981), batubara Desa Kadingeh yang paling ekonomis digunakan pada industri yaitu SE-IIC dan SE-IIB tergolong batubara jenis Subbituminous A, sedangkan SE-IIA tergolong batubara Subbituminous B.

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