cement plant is considered one of the largest sources of greenhouse gas , especially carbon dioxide . Cement plants most often use wet process , which leaves the largest carbon footprint. Scientists used large cement plants in the Ural area as an example to evaluate carbon dioxide emissions and proposed a method to reduce greenhouse gas emissions.
Ecologists demonstrated their work results in the collection of materials for the "Chemistry" of the All-Russian Science and Practice Conference, which participated in the international participation of the All-Russian Science and Practice Conference. Ecology. Urban Research and the 5th International Science Conference “From Waste Management to Resource Management”. The research was conducted within the framework of the world-class Perm REC’s priority technology project “Distributed and Climate-Neutral Energy Technology”, the priority technology project for “Rational Utilization of Underground Resources”.
” Cement production is one of the main sources of greenhouse gas emissions. This is a complex multi-stage process that directly affects the environment. Especially during the charging, grinding and drying stages of the material, a large amount of dust will be generated. During the firing of the raw material mixture, dust and gas emissions will be released, accompanied by a large amount of carbon dioxide. According to 2019 data, cement plants generate about 8% of the global CO2 emissions,” said Ksenia Khusainova, a graduate of the Department of Environmental Protection at Perm Polytechnic University and one of the developers. In Russia, decarbonization trends in industrial and technical processes are just beginning, so reducing CO2 emissions in various industries is relevant. To calculate greenhouse gas emissions, methods used by organizations engaged in economic and other activities in Russia are used to quantify these emissions, as well as the Intergovernmental Panel on Climate Change (IPCC) Guide to greenhouse gas inventories.
Scientists at Perm Polytechnic University used these methods to compare the amount of carbon dioxide in emissions from two cement plants, Gornozavodskcement LLC and Sukholozhskcement OJSC. “To reduce emissions, it is necessary to switch to dry or combined production methods, as well as the use of alternative fuels to burn raw materials.
In addition, industrial waste can be used as a "substitute" for the clay or carbonate part in the raw material. For example, waste with high content of alumina is a high-quality technical mineral raw material with recycling potential.
They improve the strength, heat resistance and frost resistance of cement and reduce the carbon footprint of production. Equipment used to capture greenhouse gases and dust in production will also reduce emissions,” explained Galina Batrakova, PhD, PhD, director of the project, professor of environmental protection at Perm Polytechnic University and PhD in Technical Sciences.
Scientists used a scenario modeling method of OpenLCA software products and environmental footprint databases to calculate carbon dioxide emissions. They evaluated the cement industry’s carbon footprint, their impact on climate change, their impact on ecosystems and their harm to human health.
According to them, the use of mineral additives in wet cement production will reduce mineral resources and fuel consumption, reduce carbon dioxide emissions by 30% by 22% by reducing carbonate in raw materials and reduce carbon consumption. Fuel-containing more than 50. The results of this study can also be used to calculate greenhouse gases in other industries, environmentalists say.
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