scholarly journals БАГАНУУРЫН ОРДЫН НҮҮРСНИЙ ШИНГЭРҮҮЛЭЛТИЙН БОЛОН ШИНЖ ЧАНАРЫН СУДАЛГАА

2016 ◽  
pp. 5-14
Author(s):  
А Ариунаа ◽  
Г Цацрал ◽  
Р Эрдэнэчимэг ◽  
Б Пүрэвсүрэн ◽  
Ж Дугаржав
Keyword(s):  
Maximum Yield ◽  
Liquid Product ◽  
Low Rank ◽  
Mass Ratio ◽  
Economic Region ◽  
Thermal Dissolution ◽  
Coal Analysis ◽  
Lignite Coal ◽  
Ir Analysis ◽  
Central Economic

The chemical characteristics, pyrolysis and thermal dissolution of Bagnuur lignite coal,  which is located in the Central economic region of Mongolia were studied. The proximate, ultimate, petrographic and IR analysis results have been confirmed that the Baganuur coal is a low-rank B2 mark lignite coal. Analysis of ash composition of the sample shows Baganuur sample has lower contents of silicium, calcium, aluminum, ferric and zincium oxides. The results of pyrolysis of Baganuur coal at different heating temperatures show that a maximum yield 7.0% of liquid product can be obtained at 600°C. The results of thermal dissolution of Baganuur coal in tetralin with constant mass ratio between coal and tetralin (1:8) at 450°C show that 40% of liquid product can be obtained after thermal decomposition of the coal organic mass.

scholarly journals Investigation on characterization and liquefaction of coals from Tavan tolgoi deposit

2014 ◽  
Vol 14 ◽  
pp. 12-19
Author(s):  
B Purevsuren ◽  
S Jargalmaa ◽  
B Bat-Ulzil ◽  
B Avid ◽  
T Gerelmaa
Keyword(s):  
Maximum Yield ◽  
Liquid Product ◽  
Coal Ash ◽  
Fluorescence Analysis ◽  
Constant Mass ◽  
Mass Ratio ◽  
X Ray ◽  
Thermal Dissolution ◽  
Ir Analysis ◽  
Coal Organic Matter

On the basis of proximate, ultimate, petrographic and IR analysis results have been confirmed that the Tavan tolgoi coal is a high-rank G mark stone coal. The results of X-ray fluorescence analysis of coal ash show that the Tavan tolgoi coal is a subbituminous coal. The ash of Tavan tolgoi coal has an acidic character. The results of pyrolysis of Tavan tolgoi coal at different heating temperatures show that a maximum yield - 5.0% of liquid product can be obtained at 700°C. The results of thermal dissolution of Tavan tolgoi coal in tetralin with constant mass ratio between coal and tetralin (1:1.8) at 450°C show that 50.0% of liquid product can be obtained after thermal decomposition of the COM (coal organic matter). DOI: http://dx.doi.org/10.5564/mjc.v14i0.191 Mongolian Journal of Chemistry 14 (40), 2013, p12-19

scholarly journals Property of upgraded solid and liquid products from Baganuur lignite by thermal reaction with solvent

2018 ◽  
pp. 39-47
Author(s):  
Ariunaa A ◽  
Otgonchuluun D ◽  
Purevsuren B ◽  
Davaajav Ya
Keyword(s):  
Thermal Decomposition ◽  
Liquid Product ◽  
Thermal Reaction ◽  
Low Rank ◽  
Spectrometric Analysis ◽  
Ftir Analysis ◽  
Constant Mass ◽  
Mass Ratio ◽  
Organic Mass ◽  
Liquid Products

The coal of Baganuur deposit have been investigated to determine its technical characteristics, elemental and petrographical maceral compositions. On the basis of proximate, ultimate, petrographic and FTIR analysis, the obtained results have confirmed that the Baganuur coal is a low rank lignite B2 mark. The liquid tar, produced through thermolysis of Baganuur coal, was investigated by FTIR, 13C and 1H NMR spectrometric analysis. The results of thermolysis of Baganuur coal in tetralin has a constant mass ratio between coal and tetralin (1:1.8) at 450°C, which shows that 40.0% of liquid product can be obtained after thermal decomposition of the coal organic mass.

scholarly journals Investigation on characterization of Ereen coal deposit

2016 ◽  
Vol 16 ◽  
pp. 18-21
Author(s):  
S. Jargalmaa ◽  
B. Purevsuren ◽  
Ya. Davaajav ◽  
B. Avid ◽  
B. Bat-Ulzii ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Liquid Product ◽  
Weight Ratio ◽  
Low Rank ◽  
Hard Coal ◽  
Hard Material ◽  
Coal Deposit ◽  
Sem Images ◽  
Constant Weight ◽  
Thermal Dissolution

The Ereen coal deposit is located 360 km west from Ulaanbaatar and 95 km from Bulgan town. The coal reserve of this deposit is approximately 345.2 million tons. The Ereen coal is used directly for the Erdenet power plant for producing of electricity and heat. The utilization of this coal for gas and liquid product using gasification and pyrolysis is now being considered. The proximate and ultimate analysis show that the Ereen coal is low rank D mark hard coal, which corresponds to subbituminous coal. The SEM images of initial coal sample have compact solid pieces. The SEM image of carbonized and activated carbon samples are hard material with high developed macro porosity structure. The SEM images of hard residue after thermal dissolution in autoclave characterizes hard pieces with micro porous structure in comparison with activated carbon sample. The results of the thermal dissolution of Ereen coal in tetralin with constant weight ratio between coal and tetralin (1:1.8) at the 450ºC show that 38% of liquid product can be obtained by thermal decomposition of the COM (coal organic matter).Mongolian Journal of Chemistry 16 (42), 2015, 18-21

scholarly journals Thermal processing of Khoot coal and characterization of obtained solid and liquid products

2014 ◽  
Vol 15 ◽  
pp. 66-72
Author(s):  
S Batbileg ◽  
B Purevsuren ◽  
Ya Davaajav ◽  
J Namkhainorov
Keyword(s):  
Activated Carbon ◽  
Liquid Product ◽  
Sem Analysis ◽  
Spectrometric Analysis ◽  
Water Steam ◽  
Initial Coal ◽  
Thermal Dissolution ◽  
Liquid Products ◽  
Ir Analysis

On 21st January 2015, the abstract of this paper was replaced with the correct abstract.The coal of Khoot deposit have been investigated and determined the technical characteristics, elemental and petrographical maceral compositions. On the basis of proximate, ultimate, petrographic and IR analysis results have been confirmed that the Khoot coal is a sub-bituminous coal. The hard residue after pyrolysis have been activated by heated water steam and determined the iodine and methylene blue adsorption of initial coal and activated carbon samples from pyrolysis hard residue. The porosity structure of initial coal, activated carbon of pyrolysis hard residue and hard residue after thermolysis (thermal dissolution) have been determined by SEM analysis. The liquid tar product of thermolysis of Khoot coal was investigated by FTIR, 13C and 1H NMR spectrometric analysis. The results of thermolysis of Khoot coal in tetralin with constant mass ratio between coal and tetralin (1:1.8) at 450°C show that 60.8% of liquid product can be obtained after thermolysis of the coal organic mass.DOI: http://doi.dx.org/10.5564/mjc.v15i0.326 Mongolian Journal of Chemistry 15 (41), 2014, p66-72

Synthesis and Evaluation of Levulinic Ester as Biodiesel Additives

2020 ◽  
Vol 71 (8) ◽  
pp. 21-26
Author(s):  
Elena-Emilia Oprescu ◽  
Cristina-Emanuela Enascuta ◽  
Elena Radu ◽  
Vasile Lavric
Keyword(s):  
Maximum Yield ◽  
Strength Distribution ◽  
Point Of View ◽  
Reaction Parameters ◽  
X Ray ◽  
Ethyl Levulinate ◽  
Ft Ir ◽  
Ir Analysis ◽  
Biodiesel Blend ◽  
Acid Strength Distribution

In this study, the SO42-/TiO2-La2O3-Fe2O3 catalyst was prepared and tested in the conversion of fructose to ethyl levulinate . The catalyst was characterized from the point of view of the textural analysis, FT-IR analysis, acid strength distribution, X-ray powder diffraction and pyridine adsorption IR spectra. The influence of the reaction parameters on the ethyl levulinate yield was study. The maximum yield of 37.95% in levulinate esters was obtained at 180 �C, 2 g catalyst and 4 h reaction time. The effect of ethyl levulinate addition to diesel-biodiesel blend in different rates, i.e, 0.5, 1, 2.5, 5 (w.t %) on density, kinematic viscosity and flash point was evaluated and compared with the European specification.

Analysis and Characterization of Solid and Liquid Organic Fertilizer from Hydrothermal Carbonization (HTC) of Chicken Feather and Blood Waste

2021 ◽  
Vol 21 (3) ◽  
pp. 651
Author(s):  
Agus Kuncaka ◽  
Rizky Ibnufaatih Arvianto ◽  
Almas Shafira Ramadhanty Bunga Latifa ◽  
Munawir Ramadhan Rambe ◽  
Adhitasari Suratman ◽  
...  
Keyword(s):  
Iron Content ◽  
Solid Phase ◽  
Organic Fertilizer ◽  
Liquid Product ◽  
Hydrothermal Carbonization ◽  
Mass Ratio ◽  
Solid Product ◽  
Chicken Waste ◽  
20 Nm

Conversion of feather and blood from chicken slaughterhouse waste for producing solid and liquid organic fertilizer excluding composting process with a variation of the mass ratio of feather and blood of a chicken has been conducted. The nitrogen, sulfur, and iron content in the solid and liquid product of the hydrothermal carbonization process were analyzed to identify and characterize the possibility of hydrolysate as a source of nitrogen, sulfur, and iron in soil fertilizer. Feather and blood of chicken waste were introduced to a hydrothermal carbonization reactor with the addition of limestone at a temperature range of 160–170 °C for the preparation of solid and liquid organic fertilizer. According to the FTIR interpretation, the solid product had functional groups such as NH, OH, CH sp3, SH, C=O, C=C, C–O–C, and C–H aromatic. The nitrogen, sulfur, and iron content of the optimal ratio in the solid phase were 4.67%, 1.63%, and 3694.56 ppm, while their contents in the liquid fertilizer were 3.76%, 1.80%, and 221.56 ppm, respectively. The vibration of 478 cm–1 is attributed to Fe–O paramagnetic (Fe2O3) confirmed by TEM images showed the diameter size less than 20 nm indicating the presence of superparamagnetic material.

VARIABILITY OF THE CHARACTERISTICS OF WEATHER AND CLIMATE OF THE CENTRAL ECONOMIC REGION

1989 ◽  
Vol 30 (1) ◽  
pp. 65-71
Author(s):  
A. A. Isayev ◽  
L. V. Klimenko ◽  
N. A. Myachkova ◽  
Ye. I. Nesmelova ◽  
V. N. Sorokina
Keyword(s):  
Economic Region ◽  
Weather And Climate ◽  
Central Economic

The Study on Anaerobic Fermentative Biological Hydrogen Production with Organic Wastes

2010 ◽  
Vol 113-116 ◽  
pp. 1476-1480
Author(s):  
Xiao Ye Liu ◽  
Yi Sun ◽  
Jian Yu Yang ◽  
Yong Feng Li
Keyword(s):  
Ph Value ◽  
Biogas Production ◽  
Removal Rate ◽  
Maximum Yield ◽  
Liquid Product ◽  
Oxygen Demand ◽  
H2 Production ◽  
Hydrogen Yield ◽  
Continuous Stirred Tank Reactor ◽  
Brown Sugar

This papre discussed the ability of H2-production and wastewater treatment, a continuous stirred tank reactor (CSTR)using a synthesized substrate with brown sugar wastewater was conducted to investigate the hydrogen yield, fermentation type of biohydrogen production, and the chemical oxygen demand (COD) removal rate, respectively. The results show that when the pH value was 4.0～4.5, OLR was 24.5kg/(m3•d), oxidation-reduction potential was -350～-450mv, temperature was 34.0°C～36.0°C, hydraulic retention time was 6h～8h, the maximum yield of biogas production reached 20L/d and the maximum content of hydrogen is 70%. Detection of the end liquid product, ethanol and acetic acid are main, they are 70% ~90% of the total liquid product, so that is called ethanol-type fermentation.

Synthesis of Biodiesel from Castor Oil Catalyzed by Cesium Phosphotungstate with the Assistance of Microwave

2013 ◽  
Vol 291-294 ◽  
pp. 300-306 ◽  
Author(s):  
Hong Yuan ◽  
Qing Shu
Keyword(s):  
Microwave Radiation ◽  
Castor Oil ◽  
Solid Acid ◽  
Maximum Yield ◽  
Conventional Heating ◽  
Molar Ratio ◽  
Mass Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Temperature Programmed

Two cesium phosphotungstate-derived solid acid catalysts (Cs2.5H0.5PW12 and Cs0.5H2.5PW12) were prepared. The resulting catalysts were characterized by powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 adsorption and desorption isotherm and temperature programmed desorption of ammonia(NH3-TPD). The Cs2.5H0.5PW12 and Cs0.5H2.5PW12 were respectively used to catalyze the tranesterification of castor oil and methanol for the synthesis of biodiesel with the assistance of microwave. Results shown microwave radiation can greatly enhance the transesterification process when compared with conventional heating method. Cs2.5H0.5PW12 showed better catalyst performance than Cs0.5H2.5PW12. A maximum yield of 90% was obtained from the using of 30:1 molar ratio of methanol to castor oil and 15 wt % mass ratio of catalyst to castor oil at 343 K under microwave radiation after 4h.

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