Browsing by Author "Vamsi Krishna Kudapa"

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A Critical Review of Fabrication Strategies, Separation Techniques, Challenges, and Future Prospects for the Hydrogen Separation Membrane
(Taylor and Francis Ltd., 2024) Vamsi Krishna Kudapa; Paramjeet Singh Paliyal; Arnab Mondal; Surajit Mondal
Fossil fuels provide over 80% of the world’s current energy demand, which results in the release of large amounts of greenhouse gases (GHGs). In contrast to the emissions of GHGs caused by the combustion of fossil fuels, hydrogen combustion produces only water as a waste product. Hydrogen is a more environmentally friendly alternative fuel. The production of hydrogen energy has the potential to address energy security issues such as climate change and air pollution. There is an increasing global interest in hydrogen, particularly green hydrogen, which is produced by electrolyzing water using power derived from renewable resources. Because of falling hydrogen prices and the growing urgency of decarbonization, global demand for hydrogen, headed by the transportation and industrial sectors, might increase by about 400% by 2050. Furthermore, using environmentally friendly hydrogen will result in a reduction of 3.6 gigatonnes of total carbon dioxide emissions between 2020 and 2050. Hydrogen has the highest energy density of any known fuel, and it is widely available in enormous quantities all over the planet. It is possible that by 2050, India’s need for hydrogen will have increased by a factor of 4, accounting for more than 10% of global consumption. Steel and heavy-duty transportation are expected to account for more than 52% of overall demand growth between now and 2050. The overall market value for environmentally friendly hydrogen in India might reach $8 billion by 2030 and $340 billion by 2050. Because India’s capacity to create power from renewable sources is growing all the time, the country now can produce hydrogen from ecologically beneficial sources such as solar and wind when demand is low. Physical adsorption and polymer membranes can be employed to extract hydrogen from crude hydrogen polluted with hydrocarbons. This can be done to clean the crude hydrogen. The purity of hydrogen is an important aspect in determining whether it can be used in the energy production process. Unlike other types of separation technologies, membrane processes can be used in both mobile and small-scale applications. The membrane may function properly under a wide range of pressure and temperature extremes. The fundamental objective and goal of the separation membrane is to be used in membrane reactors for synchronous hydrogen production and purification. Other competing methods, such as pressure swing adsorption and cryogenic distillation, do not compare favorably to the membrane separation approach at lower operating temperatures. This is because membrane separation takes fewer resources than other competing technologies, particularly ones that have been around for a longer time. This article discusses the various membranes that can be used for substance separation, how hydrogen separation membranes can be made using a variety of technologies, the challenges that are inherent in doing so, and the prospects for the future, particularly in terms of increasing the efficiency of hydrogen separation. © 2024 American Nuclear Society.
Impact and potential of carbon sequestration and utilization: fundamentals and recent developments
(Taylor and Francis Ltd., 2024) Arnab Mondal; Soumitra K Gupta; Shaurya Yaduvanshi; Muhammad Khan; Samar Layek; Vamsi Krishna Kudapa; Surajit Mondal
Carbon dioxide is a primary greenhouse gas that plays a vital role in shaping life on Earth. However, the continuous anthropogenic emissions of CO2 at prominent levels have caused severe damage to the earth as they increase the global average temperature of the earth, causing global warming. To restrict the further rise in global temperature, it is necessary to capture anthropogenic CO2 emissions efficiently by various means. Technological carbon sequestration would benefit the manufacturing industry by minimizing carbon emissions and saving on carbon taxes. This review article would explore various methods to capture carbon efficiently by improving carbon storage technology, using captured carbon economically in industries, and making fuel from captured carbon. Cooling towers can be used to capture carbon through the direct air capture (DAC) method and can be integrated with Natural Draft Dry Cooling Tower systems (NDDCTs) to lower the power consumption requirements and thus the operational costs. The captured carbon is used to make fuel by employing solid carbon directly as both an anode and fuel, with 80% higher efficiency than solid oxide fuel cells. It also emits fewer pollutants than typical coal-burning power plants. © 2024 Taylor & Francis Group, LLC.