جستجوی مقالات مرتبط با کلیدواژه "گاز متان" در نشریات گروه "شیمی"

Methane gas is one of the main greenhouse gases that is released during the exploitation and production of coal from coal mines. In recent decades, the issue of methane emissions from coal mines has emerged as a major environmental challenge. This gas plays an important role in increasing global warming as a potent greenhouse gas, and uncontrolled emissions lead to serious environmental and economic problems. Also, the potential for methane self-ignition in coal mines, as a dangerous phenomenon, requires further environmental investigation and study. Given the importance of environmental protection and reducing greenhouse gases, a precise understanding of these effects and taking appropriate measures to reduce them is essential. Therefore, this article examines the environmental effects of methane emissions in coal mines and discusses strategies to reduce these effects. The results indicate that upgrading processes and using clean and sustainable technologies can be effective in reducing methane emissions from coal mines. For instance, the use of renewable technologies such as solar and wind energy instead of fossil fuels, and the promotion of clean and environmentally friendly technologies in the processes of coal exploitation and production, will be highly effective.

Sanitary disposal is one of the waste disposal methods, which contains a lot of harmful effects especially air pollution. As a result of the biodegradation process, pollutant gas contains Biogas, Methane, Carbon Dioxide, produced from landfills within which, Methane gas has a huge effect on air pollution in comparison to other gases. In this paper, seven cities of Iran, including Tabriz, Tehran, Shiraz, Bandar Abbas, Khoy, Astara, and Mashhad have been studied for the simulation of pollutant gas emissions according to various climatic conditions in them. After collecting population growth rate, type of landfill area, and the average lifetime of the displacement site pollutant Emissions from Landfills were simulated by using LandGEM software. The findings of this study demonstrate that the highest methane production rate among the studied cities, due to the humid and normal weather for Astara and the dry weather for other cities will occur in 1415 (2036) in Tehran. Using the results obtained from this study, it is possible to design methane gas collection systems for each site. therefore, in addition to the use of pollutant gases, its accumulation in the landfill site and the explosion probabilities are also prevented.