Distributed-fibre-optic methane gas concentration detection

1991 ◽  
Author(s):  
Yi-Wei Shi ◽  
Yao-Cai Wang ◽  
Hong-Tao Jiang ◽  
Cheng-Shan Yao ◽  
Zhen-Chun Wu
Keyword(s):  
Fibre Optic ◽  
Gas Concentration ◽  
Methane Gas

Raman lidar system for methane gas concentration measurements

1986 ◽  
Vol 25 (13) ◽  
pp. 2115 ◽  
Author(s):  
J. Douglas Houston ◽  
Sebastian Sizgoric ◽  
Arkady Ulitsky ◽  
John Banic
Keyword(s):  
Raman Lidar ◽  
Lidar System ◽  
Gas Concentration ◽  
Methane Gas ◽  
Concentration Measurements

Numerical Analysis of Water Mist Flow Field for Gas Explosion Suppression in Upper Corner

2011 ◽  
Vol 71-78 ◽  
pp. 4848-4851
Author(s):  
Fan Mao Meng ◽  
Zhi Chao Liu ◽  
Zhi Zhong Liu
Keyword(s):  
Numerical Analysis ◽  
Flow Field ◽  
Coal Mine ◽  
Water Mist ◽  
Gas Explosion ◽  
Gas Concentration ◽  
Methane Gas ◽  
Gas Accumulation ◽  
Explosion Suppression ◽  
Mist Flow

The water mist is an economical and environmental agent for gas explosion suppression. It can be applied in the commonly gas concentration zones and the gas accumulation zones which is difficult to reduce the concentration of methane gas. By numerical analysis, this paper studies the effect of the direction and the number of the nozzles, and the distance form the nozzles to the wall at X direction in upper corner in coal mine. For gas explosion suppression in upper corner, it can use one nozzle which direction is same as the wind and the distance is 2m.

A microfabricated fibre optic sensor for methane gas measurement in underground coal mines

2012 ◽  
Author(s):  
Mohammad Amanzadeh ◽  
Saiied M. Aminossadati ◽  
Mehmet S. Kizil ◽  
Eoin Sheridan ◽  
Warwick P. Bowen
Keyword(s):  
Coal Mines ◽  
Fibre Optic ◽  
Fibre Optic Sensor ◽  
Methane Gas ◽  
Optic Sensor ◽  
Underground Coal Mines ◽  
Gas Measurement

scholarly journals Analysis of Reduce Potential Methane Gas Emission by Methanotrofic Bacteria from Rice Field in Gowa

2016 ◽  
Vol 10 (7) ◽  
pp. 183
Author(s):  
Maymuna Nontji ◽  
Baharuddin Patenjengi ◽  
Burhanuddin Rasyid ◽  
Pirman Pirman
Keyword(s):  
Energy Source ◽  
Incubation Period ◽  
Rice Field ◽  
Rice Fields ◽  
Gas Emission ◽  
Gas Emissions ◽  
Gas Concentration ◽  
Methane Gas ◽  
Rice Plants ◽  
Needed Information

<p>The Increase of temperature in atmosphere caused by increasing concentrations of methane in rice field affects to metabolism of rice plants, it can reduce productivity of rice. <em>Methanotrofic</em> bacteria are one of the organisms that can reduce methane gas emissions, because the bacteria use methane as an energy source. Based on the fact, needed information about the reduce potential of methane gas by the bacteria. The aim of this study was to analyze reduce potential of <em>methanotrofic</em> bacteria have been previously isolated that from rice fields in Gowa. The Analysis was done by measuring concentration of methane gas using chromatography gas techniques. Observations of remaining gas concentration were done four times during 13-days incubation period. All isolates were able to reduce methane with varies potential. The highest reduction shown by isolates GMP 2 with the reduction about 88%. The Lowest reduction shown by GMV 3 with the reduction about 51.9%.</p><p><strong>Keywords</strong>: emission, methane, <em>methanotrofic</em></p>

Measurement of methane gas concentration using an infrared LED

2006 ◽  
Author(s):  
H. Okajima ◽  
S. Kakuma ◽  
K. Uchida ◽  
Y. Wakimoto ◽  
K. Noda
Keyword(s):  
Gas Concentration ◽  
Methane Gas

FEASIBILITY ANALYSIS OF USING BIOGAS RECOVERY FROM PALM OIL MILL EFFLUENT

2018 ◽  
Vol 7 (3) ◽  
Author(s):  
Subiyanto Dkk
Keyword(s):  
Palm Oil ◽  
Feasibility Analysis ◽  
Effluent Treatment ◽  
Palm Oil Mill Effluent ◽  
Gas Concentration ◽  
Methane Gas ◽  
Gas Recovery ◽  
Palm Oil Mill ◽  
North Sumatra ◽  
Additional Income

The increasing of crude palm oil (CPO) production in Indonesia is followed by the increasing of palm oil mill effluent. Unfortunately, the open system effluent treatment carried out by most of the palm oil mills potentially generates methane gas emission and increases greenhouse gas concentration in the atmosphere. This study proposes of using methane gas recovery for alternatively flaring and generating electricity, and analyze it in the framework of Clean Development Mechanism. Samples of effluent were taken from the three size of palm oil mills (60, 40, and 30 tonnes per hour of empty fresh bunch) in north Sumatra. The results indicate that capturing methane gasfrom the palm oil mill effluent and using the biogas for generating electricity mainly and flaring the rest will reduce carbon emissions as well as generate the additional income for the palm oil mill business.keywords : POME, methane, carbon emission, generating electricity, feasibility analysis of business

Gas response of tin oxide film sensor to varying methane gas concentration

2018 ◽  
Vol 5 (5) ◽  
pp. 11140-11143 ◽  
Author(s):  
Emmanuel A. Florido ◽  
Brainerd D. Cruz ◽  
Yc A. Pasion
Keyword(s):  
Oxide Film ◽  
Tin Oxide ◽  
Film Sensor ◽  
Gas Concentration ◽  
Methane Gas ◽  
Gas Response

scholarly journals In vitro fermentation of conventional diets commonly fed to dairy cows in Central Myanmar

2016 ◽  
Vol 1 (3) ◽  
pp. 8
Author(s):  
Min Aung ◽  
Yin Yin Kyawt ◽  
Moe Thidar Htun ◽  
Khin San Mu ◽  
Aung Aung
Keyword(s):  
Dairy Cows ◽  
Metabolizable Energy ◽  
Gas Concentration ◽  
Methane Gas ◽  
Fermentation Kinetics ◽  
Natural Grass ◽  
Dry Matter Digestibility ◽  
Gas Fermentation ◽  
Nutritional Qualities

This study consisted of two experiments conducted to evaluate the effective net gas, fermentation kinetics (experiment 1), methane gas concentration, partitioning factor (PF) for microbial protein synthesis and in vitro dry matter digestibility (IVDMD) (experiment 2) of conventional diets commonly fed to dairy cows in Central Myanmar. The conventional diets from four areas [diet from Sin Tel area (Diet-ST), diet from Myay Ngu area (Diet-MN), diet from Ta Pel area (Diet-TP) and diet from Amarapura area (Diet-AM)] were used as experimental diets in this study. In most of conventional diets, rice straw, sorghum stover and natural grass were used as roughage source and cotton seed cake and broken rice were used as concentrate. However in some diets, sesame residue and butter bean residue were used as roughage source instead of sorghum stover and natural grass. The roughage to concentrate ratio and crude protein (CP) content of conventional diets ranged from 53:47 to 72:28 and 11.46 to 17.96%, respectively. In experiment 1, the effective net gas volume of Diet-TP was lower (p<0.05) than Diet-ST and Diet-AM and generally, the fermentation kinetics (a, b, c and a+b) of Diet-TP were also lower than those of other diets. In the experiment 2, the lower value (p<0.05) of short chain fatty acid (SCFA) was found in Diet-MN and Diet-TP while the higher values (p<0.05) of metabolizable energy (ME) and organic matter digestibility (OMD) were observed Diet-AM and Diet-TP. Although methane gas concentration of Diet-TP was higher (p<0.05) than those of other diets, the greater values of IVDMD and PF were observed in Diet-TP. According to these findings, it was perceived that all conventional diets have different nutritional qualities which are useful for production and health of dairy cows; however the Diet-TP possessed the highest nutritional qualities among the conventional diets.

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