How do fossil fuels contribute to air pollution?4 answersFossil fuels contribute to air pollution through the combustion process, which releases pollutants into the atmosphere. These pollutants include sulfur dioxide, nitrogen oxides, carbon dioxide, particulate matter, and other noxious substances. The burning of fossil fuels in power plants, industrial processes, and transportation is a major source of these emissions. Sulfur dioxide and nitrogen oxides can cause acid rain and photochemical smog, while carbon dioxide is a major contributor to global warming. The release of particulate matter and other pollutants can also have adverse effects on human health and the environment. Various technologies and pollution abatement measures have been developed to reduce these emissions, but the challenge of reducing carbon dioxide emissions remains significant.
How the electricity produce emission indonesia?5 answersElectricity production in Indonesia contributes to greenhouse gas emissions, particularly carbon dioxide (CO2) gases. The main sources of these emissions are fossil fuels such as coal, fuel oil, diesel oil, and gas. The Indonesian government has set targets to reduce GHG emissions from the energy sector, including electricity generation, by 11% by 2030. However, the consumption of fossil fuels in the power plant sector remains high. The government plans to increase the share of renewable energies, but coal, fuel oil, and diesel are still heavily relied upon. The projection of fuel consumption and emissions in the power plant sector until 2025 shows that coal, natural gas, fuel oil, and diesel oil will continue to be used extensively. The use of clean coal technology can help reduce CO2 emissions from coal-fired power plants. Overall, reducing emissions from electricity production in Indonesia requires a shift towards renewable energy sources and the adoption of cleaner technologies.
What are the possible reactions between furanol and 2 hydroxy furan carboxylic acid?3 answersThe possible reactions between furanol and 2-hydroxyfuran carboxylic acid include radical hydroxylation of the furan ring, resulting in the formation of 5-hydroxy-2(5H)-furanone and maleic acid. Additionally, the reaction of 2,5-furan dicarboxylic acid (FDCA) with an alcohol or mixture of alcohols in a CO2-predominant atmosphere can lead to the formation of a furan dicarboxylate. However, there is no specific information available regarding the direct reaction between furanol and 2-hydroxyfuran carboxylic acid in the provided abstracts.
What is oxidation of biochar?5 answersOxidation of biochar refers to the process of introducing oxygen-rich functional groups to the surface of biochar through chemical reactions. This modification enhances the physicochemical properties of biochar, making it more effective for various applications. Biochar can be oxidized using different methods, such as the Fenton reactionor air oxidation. The oxidation of biochar can lead to the development of oxygen-containing functional groups, such as hydroxyl (OH) and carboxyl (COOH) groups, which can improve its adsorption capacity and catalytic activity. The oxidized biochar has been found to have increased adsorption of ammonium (NH4+) and reduced emissions of ammonia (NH3) in various solutions, such as ammonium sulfate solution and cattle slurry. Additionally, oxidation of biochar can promote the generation and activation of hydrogen peroxide (H2O2) in electrochemical advanced oxidation processes (eAOPs), leading to the efficient removal of recalcitrant organic pollutants in wastewater. Overall, oxidation of biochar plays a crucial role in enhancing its performance and expanding its applications in environmental remediation and pollution control.
What is the mechanism of ethanol oxidation reaction?5 answersThe mechanism of ethanol oxidation reaction involves multiple steps and is influenced by various factors. The presence of oxygen and water in the liquid phase triggers the autoxidation of acetaldehyde to acetic acid, likely driven by radicals. Adsorbed OH plays a crucial role as a reactant, favoring the conversion of ethanol to adsorbed ethoxy and further evolving into adsorbed COCH3. The diffusion rate of adsorbed OH on the surface modulates the availability of this key reactant. In the supercritical water environment, dehydrogenation and pyrolysis of ethanol are the main ways to generate H2, while the water-gas shift reaction significantly impacts hydrogen production. The presence of an oxygen impurity in linear atomic chains of gold nanowires modifies the reaction pathway and reduces the activation energy barriers, enhancing the oxidation of ethanol to acetaldehyde. The selective ethanol oxidation to CO2 can be achieved at the Rh-SnO2 interface, promoting the breaking of C-C bond and oxidation of poisonous intermediates.
How is the oxidation kinetics affecting the combustion process inside the internal reactor?5 answersThe oxidation kinetics play a crucial role in the combustion process inside the internal reactor. The reaction pathways and consumption pathways of the fuel are determined by the oxidation kinetics. For example, in the oxidation of 2-methylfuran, ring cleavage and CO/CH3CO removal lead to the production of C2-C4 species. Similarly, in the oxidation of natural gas, the starting and ending temperatures for oxidation reaction are influenced by the equivalence ratio, and the amount of NO production is affected by the reaction temperatures corresponding to CO generation and consumption. In chemical looping combustion, the redox kinetics of the oxygen carrier are described by a reduced-order model, which considers gas diffusion, surface reaction, product growth, and other factors. In the oxidation of ammonia, the formation of intermediates and the decomposition reactions are controlled by the oxidation kinetics, affecting the reactivity and flame propagation. Finally, in the oxidation of ethylene and propene, the presence of CO2 and H2O can inhibit or accelerate the combustion process, depending on the fuel mixture and conditions.