scholarly journals Methane gas concentration in soils and ground water, Carbon and Emery Counties, Utah, 1995-2003

2006 ◽  
Author(s):  
B.J. Stolp ◽  
A.L. Burr ◽  
K.K. Johnson
Keyword(s):  
Ground Water ◽  
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.

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

scholarly journals Network of Radon Gas Concentration Monitoring of Research and Development Centre – BMKG for Earthquake Precursor Research in Indonesia

2021 ◽  
Vol 873 (1) ◽  
pp. 012006
Author(s):  
Agustya Adi Martha ◽  
Angga Setiyo Prayogo ◽  
Jimmi Nugraha ◽  
Suliyanti Pakpahan ◽  
Nelly Florida Riama
Keyword(s):  
Research And Development ◽  
Ground Water ◽  
Earthquake Precursors ◽  
Research Centre ◽  
Gas Concentration ◽  
Radon Gas ◽  
Development Centre ◽  
Conducting Research ◽  
The Impact ◽  
Radon Monitoring

Abstract The geographical position of Indonesia, which is flanked by several subduction zones and the presence of active faults in the sea and land make Indonesian territory prone to earthquakes and tsunamis which can result in many deaths and damaged. There are several efforts we can do to minimize the occurrence of earthquakes, including developing earthquake resistant buildings, increasing the ability/capacity of the community, and predicting earthquakes or better known as earthquake precursors. The BMKG Research Centre began conducting research on earthquake prediction using several methods, including the Radon monitoring method. Monitoring of Radon gas concentrations for earthquake precursors has several advantages, including the presence of radioactive gas which is abundant in ground water that has a half-life of 3.2 days. Radon is the result of decay of uranium 278U which is abundant in the earth’s crust rock so that when rock friction occurs, the Radon gas can be detached. Based on the results of Radon monitoring at Tadulako and Palolo stations - Southeast Sulawesi province, there was a change in the pattern of radon gas concentration and water level rising up and down drastically and a gradual decrease in ground water temperature before the earthquake on 28 September 2018. In addition to Central Sulawesi, since 2012 the Centre for Research and Development of BMKG has been conducting research to monitor radon gas concentrations in the DI Yogyakarta region precisely in Piyungan and Pundong districts with the aim of monitoring radon gas concentrations in the Opak fault. In 2021, the BMKG Research and Development Centre added a new radon gas monitoring network in the active fault areas of Cimandiri and Lembang in the West Java province. There are 1 station in the Cimandiri fault segment and 2 stations in the Lembang fault section. It is hoped that in the future the results of monitoring can reduce the impact caused by the earthquake disaster in Indonesia.

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

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
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