ABSTRACT
Boron-hydrogen (B-H) materials are used as hydrogen and heat sources, due to their reducing potential. It has been shown again with the COVID-19 pandemic that greenhouse gas activities are anthropogenic in origin. In particular, the conversion of carbon dioxide (CO2) into valuable chemicals has an important place in the fight against the climate crisis. The conversion of anthropogenic CO2 into valuable chemicals has important implications for a habitable world. In many studies in the literature, boron hydrides have been used to produce, hydrogen and convert carbon dioxide into valuable chemicals. Formic acid and methanol obtained by hydrogenation can be seen as the clean energy movement of the future with its value in hydrogen storage. The type of valuable chemicals that will be formed by the hydrogenation of CO2 is directly related to the method to be followed. The type of catalyst used, or how much hydrogen molecule interacts with CO2, determines the valuable chemical that will form. Disturbances in the thermodynamics of the hydrogenation of CO2 have been tried to be eliminated by various types of catalysts and necessary condition optimizations. Many catalysts and methods developed for the hydrogenation of CO2 were examined. This study discusses the use of B-H materials via catalytic conversion of CO2 into valuable chemicals in terms of critical factors such as reaction conditions, selection of catalyst, and solvent. © 2022 Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2. All rights reserved.
ABSTRACT
The anthropogenic CO2 emission is contributed to the rapid increase in CO2 concentration. In the current study the anthropogenic CO2 emission in the Middle East (ME) is investigated using 6 years column-averaged CO2 dry air mole fraction (XCO2) observation from Orbiting Carbon Observatory-2 (OCO-2) satellite. In this way, the XCO2 anomaly ((Formula presented.) XCO2) as the detrended and deseasonalized term of OCO-2XCO2 product, was computed and compared to provide the direct space-based anthropogenic CO2 emission monitoring. As a result, the high positive and negative (Formula presented.) XCO2 values have corresponded to the major sources such as oil and gas industries, and growing seasons over ME, respectively. Consequently, the Open-source Data Inventory for Anthropogenic CO2 (ODIAC) emission and the gross primary productivity (GPP) were utilized in exploring the (Formula presented.) XCO2 relation with human and natural driving factors. The results showed the capability of (Formula presented.) XCO2 maps in detecting CO2 emission fluctuations in defined periods were detectible in daily to annual periods. The simplicity and accuracy of the method in detecting the man-made and natural driving factors including the main industrial areas, megacities, or local changes due to COVID-19 pandemic or geopolitical situations as well as the vegetation absorption and biomass burning is the key point that provides the environmental managers and policymakers with valuable and accessible information to control and ultimately reduce the CO2 emission over critical regions. © 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
ABSTRACT
COVID-19 pandemic is accelerating the transition to decarbonized energy systems. In this context, major Operators and Contractors are bound to promote innovation and technological development. The paper describes how this is being applied to the design of offshore pipelines that are now required to transport not only Hydrocarbons but also anthropogenic CO2 and low-carbon Hydrogen. In order to evaluate all the new technical challenges presented in designing CO2 and H2 pipelines, a state of art has been carried out and is here presented focusing on all the new technical aspects associated to the main disciplines involved in the pipeline network design. Different technical aspects (such as performances evaluation of Equation of State in CCS, Design Standards application to both CO2 and hydrogen pipelines, energy capacity of hydrogen pipelines and others) have been also analytically or numerically addressed simulating credible pipeline operating scenarios. To achieve that, an intensive engineering effort is being dedicated to the development of knowledge, engineering tools, methods and procedures that will be the basis for the execution of future projects concerning H2 and CO2 transportation and storage. A particular focus has been dedicated to offshore pipeline design both for new installation and repurposing of existing ones. In parallel, the cooperation started between Operators, Contractors, Manufacturers, Institutions and Universities, as described in the present paper, acts as a "booster" for the consolidation of knowledge and for the advancing of technology to put in place to overcome those new challenges. Recommendations are made in relation to the gaps found in experimental evidence present in literature and gaps in Standards coverage for the proper pipeline design in those new scenarios. © Copyright 2021, Society of Petroleum Engineers