scholarly journals Tissue Preservation Index (TPI) and Gelification Index (GI) with the Quality of Coal as well as the Connection to the Acid Water Mining

2020 ◽  
Vol 202 ◽  
pp. 04005
Author(s):  
Muhammad Ilham Fatkhurrahman ◽  
Dian Agus Widiarso ◽  
Devina Trisnawati ◽  
Ahmad Zaki Romi ◽  
dan Arya Gustifram
Keyword(s):  
Research Area ◽  
Volatile Matter ◽  
Ash Content ◽  
Acid Water ◽  
Polynomial Method ◽  
Tissue Preservation ◽  
Fixed Carbon ◽  
Pressing Method ◽  
Hydrological System

Tissue Preservation Index (TPI) and Gelification Index (GI) are products in coal related to the quality of coal and acid water mining. Research is conducted to know the relationship between the two by means of correlation using polynomial method and pressing method on the environmental diagram of the depositional environtment/facies. The correlation result is obtained that the higher the value of TPI, the value of Inherent Moisture and Volatile Matter is lower and the value of ash content and Fixed Carbon is higher. The higher the value of the GI, then the value of ash content and Fixed Carbon is higher and the value of Volatile Matter is getting lower. The lymnic deposition facies are areas that are located far from the sea and covered by a barrier and composed of land sediment with an active hydrological system. This is what causes minimal acidic water to occur because the sea sulfide does not intervene in the surrounding rocks. In addition, high GI value levels in the research area cause the oxidation process to be low and result in low rock acidity conditions.

scholarly journals Study of Some Wood-charcoal Characters Produced from Some Tree Species of Duhok Province

2020 ◽  
Vol 23 (2) ◽  
pp. 146-152
Author(s):  
Dilgash Fayeq Yaseen ◽  
Mohammed Amin Yasin Taha ◽  
Hasan Saleem Nabi ◽  
Abdulaziz Jameel Younis
Keyword(s):  
Moisture Content ◽  
Wood Species ◽  
Volatile Matter ◽  
Ash Content ◽  
Wood Charcoal ◽  
Populus Alba ◽  
Kurdistan Region ◽  
Fixed Carbon ◽  
Salix Alba

This investigation was done in the laboratory of college of agricultural engineering sciences – University of Duhok to study some wood-charcoal quality produced from some local wood species in Kurdistan region Iraq. In market, the quality of wood charcoal produced from tree species is varied due to divers’ anatomical structure and carbonizing temperature process. As a consequence, understanding the factors controlling the quality of wood charcoal is an important issue for both producers (sellers) and consumers (buyers). In most charcoal factories, wood charcoal are produced without determining of their quality whereas each quality of wood charcoal has its own properties, price and uses. The quality of charcoal made from some selected local wood species (Quercus aegilops, Salix alba, Malus domestica, and Populus alba) were evaluated. The woods species were collected from Zaxo district of Duhok province and were transformed into wood-charcoal using a steel kiln for pyrolysis. The analysis of physical and chemicals such moisture content percentage [MCP] , volatile matter percentage [VMP] , ash content percentage [ACP] and fixed carbon percentage [FCP], of the produced wood-charcoal were proximately resolved using the (ASTM D3176 – 15) method. The results showed, for the first time on all around the Kurdistan region of Iraq, the quality of wood charcoal produced from these wood species. The highest value off moisture content (2.375%) was with Malus domisteca as compared with Populus alba which was (1.000%), highest volatile matter (21.125%) was with Quercus aegilpops compared with Populus alba (4.125%), high ash content recorded (4.875%) with Quercus aegilpops compared with Salix alba (2.250%) and the fixed carbon was greater value in Populus alba which was (92.125%) compared with Quercus aegilpops (72.875%). In addition, these species present significant divergence in term of good quality of wood charcoal and the (populous alba) gave the superior quality of wood charcoal from the rest wood species. Therefore, the results of this study have a high assessment for managers of Kurdistan governmental and private charcoal factories as a suggestion which wood species is suitable in order to achieve better quality of wood charcoal.

scholarly journals Effect of Pyrolysis Temperature and Residence Time on Bio-char Obtained from Pyrolysis of Shredded Cotton Stalk

2020 ◽  
pp. 10-28
Author(s):  
J. M. Makavana ◽  
P. N. Sarsavadia ◽  
P. M. Chauhan
Keyword(s):  
Residence Time ◽  
Pyrolysis Temperature ◽  
Calorific Value ◽  
Volatile Matter ◽  
Quality Parameters ◽  
Ash Content ◽  
Cotton Stalk ◽  
Fixed Carbon ◽  
Heating Value

Bio-char is carbon-rich product generated from biomass through batch type slow pyrolysis. In this study, the effects of pyrolysis temperature and residence time on the yield and properties of bio-chars obtained from shredded cotton stalks were investigated. Safely said that the quality of bio-char of shredded cotton stalk obtained at 500°C temperature and 240 min is best out of the all experimental levels of variables of temperature and residence time. At this temperature and residence time, the quality of bio-char in terms higher heating value (8101.3cal /g or 33.89 MJ/kg), nitrogen (1.56%), Carbon (79.30%), and C/N ratio (50.83) respectively. The quality of bio-char for various applications is discussed along with different quality parameters. The bio-char could be used for the production of activated carbon, in fuel applications, and water purification processes. Average bulk density of whole cotton stalk and shredded cotton stalk was found as 29.90 kg/m3 and 147.02 kg/m3 respectively. Thus density was increased by 3.91 times. The value of pH, EC and CEC of shredded cotton stalk biomass was found as 5.59, 0.03 dS/m and 38.84 cmol/kg respectively. Minimum and maximum values pH, EC and CEC of its bio-char was found as 5.85 to9.86, 0.04 to 0.10 dS/m and 38.02 to 24.39 cmol/kg at 200°C and 60 min and; 500°C and 240 min temperature and residence time respectively. Moisture content, ash content, volatile matter and fixed carbon of shredded cotton stalk biomass were found as, 12.5, 5.27, 80.22, and 14.51 (%, d.b) respectively. The minimum and maximum value of bio-char in terms of ash content, volatile matter and fixed carbon of bio-char were found as 5.5 to 15.56, 48.02 to 79.48 and 15.02 to 36.40 (%, d.b) respectively. Calorific value of cotton stalk biomass was found as 3685.3 cal /g. The minimum and maximum higher heating value of its bio-char was found as 4622.0 cal/ g and 8101.3 cal/g at 200°C and 60 min and; 500˚C and 240 min temperature and residence time.

scholarly journals Quality Improvement on Briquettes Made of Oil Palm Empty Fruit Bunches (EFB) Using of Brown Algae Adhesive

2020 ◽  
Vol 15 (1) ◽  
pp. 38-44
Author(s):  
Ana Dewita ◽  
M. Faisal ◽  
Asri Gani
Keyword(s):  
Oil Palm ◽  
Brown Algae ◽  
Thermal Characteristics ◽  
Calorific Value ◽  
Volatile Matter ◽  
Proximate Analysis ◽  
Ash Content ◽  
Fixed Carbon ◽  
Empty Fruit Bunches

The charcoal produced from oil palm empty fruit bunches pyrolysis can be utilized as environmentally friendly alternative fuel briquettes. This research aimed at improving the quality of these EFB briquettes using brown algae adhesive (alginate). The adhesive was added at 2.5%, 5%, 7.5%, and 10%. Proximate analysis was then performed on EFB and the brown algae. The best quality briquettes were obtained by adding brown algae adhesive at 2.5% concentrate, which resulted in a calorific value of 21,405 J/g. Other characteristics such as moisture content, ash content, volatile matter, and fixed carbon were found to be 7.4%, 4.9%, 79%, and 8.7%, respectively. In addition, the thermal characteristics such as density, flash point, and burning time were found at 0.96 g/cm3, 5.1 second, and 300 minutes, respectively.

scholarly journals MUTU BRIKET ARANG KULIT BUAH KAKAO DENGAN MENGGUNAKAN KANJI SEBAGAI PEREKAT

PERENNIAL ◽  
2007 ◽  
Vol 3 (2) ◽  
pp. 55
Author(s):  
M. Natsir Usman
Keyword(s):  
Energy Source ◽  
Particle Size ◽  
Alternative Energy ◽  
Calorific Value ◽  
Volatile Matter ◽  
Ash Content ◽  
Fixed Carbon ◽  
Natural Energy ◽  
Charcoal Particle

The development of an alternative energy is now becoming important due to the decrease of natural energy source, The current research was conducted to observe the quality of making charcoal briquette from cocoa pod shell with the particle size of 30 mesh, 50 mesh, 70 mesh and 7 % starch as adhesive. The result showed that charcoal particle size of 70 mesh gave the best charcoal briquette quality having characteristics: moisture 10.67 %, density of 1.15 g/cm3, 18.98% ash content, 49.93 % fixed carbon, 24.99% volatile matter and the calorific value of 4372.54 cal/g. Charcoal briquette from cocoa pod shell was utilized as alternative energy. Key words: Cocoa pod shell, charcoal briquette, starch as adhesive. References

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 PEMBUATAN BIOPELET DARI KAYU PUTIH DENGAN PENAMBAHAN GONDORUKEM SEBAGAI BAHAN BAKAR ALTERNATIF

2018 ◽  
Vol 2 (1) ◽  
pp. 91-100
Author(s):  
Sofia Mustamu ◽  
Gysberth Pattiruhu
Keyword(s):  
Renewable Energy ◽  
Moisture Content ◽  
Energy Content ◽  
Raw Materials ◽  
Calorific Value ◽  
Volatile Matter ◽  
Ash Content ◽  
Fixed Carbon

Biopelet is one of the renewable energy alternatives that have uniformity of size, shape, density, and energy content. The purpose of this study was to examine the characteristics of biopelet consisting of a mixture of cajeput and gondorukem, and to determine the composition of the raw materials that can produce a biopelet with the best quality. The compositions of a mixture in this research are as follow 95%:5%, 90%:10%, 80%:20%, 70%:30%, 60%:40%, 50%:50%, cajeput 100% and gondorukem 100%. The manufacture of biopelet used a 20 mesh of dust with the pressure of 526.4 kg/cm2  at a temperature of 200 ◦C for 15 minutes. Types of tests performed on biopelet include density, moisture content, volatile matter, ash content, carbon bonded, and calorific value. The results of the best quality of biopelet was in the percentage of cajeput and gondorukem was 70%:30%,  tests showed densities of biopelet 0,84 g/cm3, moisture content5,89%, ash content 2,42%, volatile matter 73,99%, fixed carbon 18,96%, and calorific value 5152 kkal/kg.

Evaluation of the higher heating value, volatile matter, fixed carbon and ash content of ground bamboo using near infrared spectroscopy

2017 ◽  
Vol 25 (5) ◽  
pp. 301-310 ◽  
Author(s):  
Jetsada Posom ◽  
Panmanas Sirisomboon
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Model Development ◽  
Volatile Matter ◽  
Ash Content ◽  
Least Squares Regression ◽  
Fixed Carbon ◽  
Bomb Calorimetry ◽  
Heating Value

This research aimed to determine the higher heating value, volatile matter, fixed carbon and ash content of ground bamboo using Fourier transform near infrared spectroscopy as an alternative to bomb calorimetry and thermogravimetry. Bamboo culms used in this study had circumferences ranging from 16 to 40 cm. Model development was performed using partial least squares regression. The higher heating value, volatile matter, fixed carbon and ash content were predicted with coefficients of determination (r2) of 0.92, 0.82, 0.85 and 0.51; root mean square error of prediction (RMSEP) of 122 J g−1, 1.15%, 1.00% and 0.77%; ratio of the standard deviation to standard error of validation (RPD) of 3.66, 2.55, 2.62 and 1.44; and bias of 14.4 J g−1, −0.43%, 0.03% and −0.11%, respectively. This report shows that near infrared spectroscopy is quite successful in predicting the higher heating value, and is usable with screening for the determination of fixed carbon and volatile matter. For ash content, the method is not recommended. The models should be able to predict the properties of bamboo samples which are suitable for achieving higher efficiency for the biomass conversion process.

scholarly journals Valorization of briquettes fuel using Pinus spp. sawdust from five regions of Mexico

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 2249-2263
Author(s):  
María Alejandra Ramírez-Ramírez ◽  
Artemio Carrillo-Parra ◽  
Faustino Ruíz-Aquino ◽  
Luis Fernando Pintor-Ibarra ◽  
Nicolás González-Ortega ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Impact Resistance ◽  
Resistance Index ◽  
Calorific Value ◽  
Volatile Matter ◽  
Ash Content ◽  
Fixed Carbon ◽  
Volumetric Expansion ◽  
Pinus Spp ◽  
The Impact

This research characterized briquettes made with Pinus spp. sawdust without the use of additives. For this purpose, 19 samples of sawdust from different wood industries located in five states of the Mexican Republic were used. The densification process was carried out in a vertical hydraulic piston laboratory briquette machine. The briquettes were made with 40 g of sawdust, at 50 °C, 20 kPa and pressing for 5 min. The results obtained varied as follows: moisture content (4.1% to 7.2%), density (813.9 to 1,014.4 kg/m3), volumetric expansion (7.4% to 37.3%), compressive strength (4.9 to 40.8 N/mm), impact resistance index (46.7% to 200%), ash (0.1% to 1.1%), volatile matter (82.9% to 90.7%), fixed carbon (8.9% to 16.4%), and calorific value (20.5 to 22.8 MJ/kg). The density of the briquettes was within the “acceptable” classification (800 to 1,200 kg/m3). It was observed that, the higher the density, the lower the volumetric expansion, the higher the compressive strength, and the higher the impact resistance index. According to the ash content, the briquettes could achieve international quality. Due to high volatile matter values, rapid combustion of the briquettes with little generation of toxic smoke would be expected. Fixed carbon and calorific value results were acceptable.

scholarly journals AVALIAÇÃO DE TRÊS MADEIRAS NATIVAS DO CERRADO GOIANO VISANDO À UTILIZAÇÃO ENERGÉTICA

Nativa ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 615-624
Author(s):  
Humberto Fauller De Siqueira ◽  
Evelym Poliana Santos Patrício ◽  
Michael Douglas Roque Lima ◽  
José Benedito Guimarães Junior ◽  
Angélica de Cássia Oliveira Carneiro ◽  
...  
Keyword(s):  
Native Species ◽  
Basic Density ◽  
Ash Content ◽  
Muffle Furnace ◽  
Fixed Carbon ◽  
Energy Potential ◽  
Final Temperature ◽  
Wood Basic Density ◽  
Longitudinal Position

Estudos que visem ampliar o conhecimento das madeiras oriundas do cerrado podem contribuir com o correto manejo das espécies. O objetivo deste estudo foi avaliar a qualidade da madeira e do carvão vegetal de três espécies do cerrado (Tachigali vulgaris, Myracrodruon urundeuva e Amburana cearensis) para fins energéticos. Foram amostradas duas árvores por espécie e, destas, foram retirados discos da base, a 25, 50, 75 e 100% da altura total. Para a madeira, determinou-se longitudinalmente a densidade básica, composição química, estoque de carbono, poderes caloríficos superior (PCS) e inferior (PCI) e densidade energética. As carbonizações da madeira foram realizadas em forno elétrico, com temperatura final de 450 ºC e taxa de aquecimento de 1,67 ºC.min-1. A posição longitudinal de amostragem não influenciou a densidade da madeira. A madeira de M. urundeuva apresentou maior densidade básica e PCS, bem como menor teor de materiais voláteis. O carvão da espécie T. vulgaris apresentou a menor densidade aparente (298 kg.m-3) e baixo teor de cinzas (1,14%), porém elevado teor de carbono fixo e PCS. O carvão vegetal da espécie M. urundeuva se destacou com elevada densidade relativa aparente (475 kg.m-3). A ordem das melhores espécies é: M. urundeuva, A. cearensis e T. vulgaris. Palavras-chave: energia renovável; espécies nativas; potencial energético; qualidade do carvão.   ASSESSMENT OF THREE NATIVE WOODS FROM CERRADO OF GOIÁS FOR THE ENERGY PURPOSES   ABSTRACT: Studies aimed at expanding the knowledge of woods from cerrado can contribute to the correct management of the species. The aim of this study was to evaluate the quality of wood and charcoal of three species from cerrado (Tachigali vulgaris, Myracrodruon urundeuva, and Amburana cearensis) for energy purposes. Two trees per species were sampled and, from these, disks were removed from the base, at 25, 50, 75, and 100% of the total height. For wood, the properties basic density, chemical analysis, carbon stock, higher (HHV) and lower (LHV) heating values were determined longitudinally. Carbonizations were carried out in a muffle furnace with a final temperature of 450 ºC and heating rate of 1.67 ºC.min-1. There was no effect of longitudinal position under the wood basic density. Myracrodruon urundeuva wood had the highest basic density and HHV, as well as the lowest content of volatile matters. The Tachigali vulgaris charcoal had the lowest bulk density (298 kg.m-3) and low ash content (1.14%), but a high content of fixed carbon and HHV. Charcoal of the species M. urundeuva stood out with high apparent relative density (475 kg.m-3). The order of the best species is M. urundeuva, A. cearensis, and T. vulgaris. Keywords: renewable energy; native species; energy potential; charcoal quality.

scholarly journals Analysis of the Quality of Mixed Coconut Shell Waste Briquettes with Various Biomass Additives as Alternative Fuels

2021 ◽  
Vol 4 (2) ◽  
Author(s):  
Yusraida Khairani Dalimunthe ◽  
Sugiatmo Kasmungin ◽  
Listiana Satiawati ◽  
Thariq Madani ◽  
Teuku Ananda Rizky
Keyword(s):  
Moisture Content ◽  
Calorific Value ◽  
Volatile Matter ◽  
Matter Content ◽  
Ash Content ◽  
Coconut Shell ◽  
Bamboo Charcoal ◽  
A Value ◽  
Shell Waste

The purpose of this study was to see the best quality of briquettes from the main ingredient of coconut shell waste<br />with various biomass additives to see the calorific value, moisture content, ash content, and volatile matter<br />content of the biomass mixture. Furthermore, further research will be carried out specifically to see the quality of<br />briquettes from a mixture of coconut shell waste and sawdust. The method used in this research is to conduct a<br />literature study of various literature related to briquettes from coconut shell waste mixed with various additives<br />specifically and then look at the best quality briquettes produced from these various pieces of literature. As for<br />what is determined as the control variable of this study is coconut shell waste and as an independent variable,<br />namely coffee skin waste, rice husks, water hyacinth, Bintaro fruit, segon wood sawdust, coconut husk, durian<br />skin, bamboo charcoal, areca nut skin, and leather waste. sago with a certain composition. Furthermore, this<br />paper also describes the stages of making briquettes from coconut shell waste and sawdust for further testing of<br />the calorific value, moisture content, ash content, volatile matter content on a laboratory scale for further<br />research. From various literatures, it was found that the highest calorific value was obtained from a mixture of<br />coconut shell waste and bamboo charcoal with a value of 7110.7288 cal / gr and the lowest calorific value was<br />obtained from a mixture of coconut shell waste and sago shell waste with a value of 114 cal / gr, then for the value<br />The highest water content was obtained from a mixture of coconut shell waste and rice husk with a value of<br />37.70% and the lowest water content value was obtained from a mixture of coconut shell waste 3.80%, then for the<br />highest ash content value was obtained from a mixture of coconut shell waste and coffee skin with a value of<br />20.862% and for the lowest ash content value obtained from a mixture of coconut shell and Bintaro fruit waste,<br />namely 2%, and for the highest volatile matter content value obtained from a mixture of coconut shell and coconut<br />husk waste with a value of 33.45% and for the value of volatile matter levels The lowest was obtained from a<br />mixture of coconut shell waste and sago skin waste with a value of 33 , 45%.

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