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Carbon Dioxide - Springer Nature

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Last Updated: 10 September 2022

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Determination of the Air Volume Flow in a Classroom Based on Measurements of Carbon Dioxide Concentration

To ensure the quality of indoor air, it is important to specify a ventilation unit. To ensure the quality of indoor air, it is important to determine the correct air volume flow. Experimental investigation of carbon dioxide concentration and air temperature in a selected room carried out was part of Lviv Polytechnic's indoor air quality study. The rate of increase of the CO_2 concentration in the room's weight is directly related to the room's weight, according to the study of measured and estimated values of air parameters. The subjective report's findings revealed that indoor air quality also influences subjective measurement's accuracy, according to the report's findings. An average deviation of 2. 1 percent was found when comparing the method of calculating the required air volume in the room based on the measured CO_2 concentration and the method of estimation based on the weight of individuals.

Source link: https://doi.org/10.1007/978-3-031-14141-6_11


Development of Carbon Dioxide Absorbing Concrete for Urban Pavements—An Experimental Study

Global climate change has been traced primarily to carbon dioxide pollution. In this context, carbon pollution monitoring has been established by reference to carbon mitigation policies and policies at various levels. Accordingly, researchers have started estimating global carbon dioxide pollution as a result of this growing interest. It has been found that avoiding large amounts of CO2 emissions from building would possibly reduce the overall CO2 emission reductions. We've investigated the usage of zeolite as a substitute for cement that would later absorb CO_2.

Source link: https://doi.org/10.1007/978-981-19-1862-9_60


Incorporating Carbon Dioxide into Portland Cement Concrete

This research, published in this context, investigates the possibility of sealing carbon dioxide into concrete in a permanent manner. The conversion of trapping carbon dioxide into concrete requires a chemical reaction between hydrated cement and carbon dioxide. Carbon dioxide is converted into calcium carbonate nano in-situ particles by this reaction. Trapping carbon dioxide in concrete can be beneficial to both the climate and the construction industry as long as the concrete's strength properties are preserved, if not enhanced. The concrete was evaluated for its fresh concrete properties by a variety of tests, including slump, storage, temperature, unit weight, and air content, as well as hardened concrete materials such as compressive strength and flexural strength. This work provides a better understanding of the behavior of concrete that contain carbon dioxide as well as the possibility of finding innovative ways to utilize carbon dioxide waste in the building industry.

Source link: https://doi.org/10.1007/978-981-19-1004-3_3


Modeling of the effect of hydrogen injection on blast furnace operation and carbon dioxide emissions

Using a 1D steady-state zonal model, the effect of hydrogen injection on blast furnace operation and carbon dioxide emissions was reproduced. With a focus on the thermal reserve zone, the maximum hydrogen injection rate was determined on the basis of the simulation of the vertical temperature pattern in the blast furnace. Also investigated were coke replacement ratio, manufacturing rate, hydrogen utilization rate, and carbon dioxide pollution reduction by using blast temperature and oxygen enrichment. The maximum hydrogen injection rate for 1200 u00b0C was 19. 0 and 28. 3 kg of hot metal for oxygen enrichment of 2vol% and 12vol%, respectively, for blast temperature 1200 degrees. In the range from 9. 4 t of CO_2/t of H_2 to 9. 7 t of CO_2/t of H_2, hydrogen injection's decarbonization potential of hydrogen injection was estimated.

Source link: https://doi.org/10.1007/s12613-022-2474-8


Dynamic and thermodynamic analysis of a novel aircraft energy management system based on carbon dioxide energy storage

With the growth of aircraft electrification, the issue of thermal management has become more prevalent. To fulfill the requirements of aircraft thermal control while also retaining high efficiency, it is necessary to develop a new aircraft energy management strategy. This paper discusses an improved carbon dioxide energy storage system used in aircraft energy conservation. Especially because this is the first time carbon dioxide has been used for aircraft energy storage. Carbon dioxide can be used as a cold source to dissipate heat for the machine in this method. In addition, the energy storage unit increases the system's flexibility.

Source link: https://doi.org/10.1007/s10973-022-11270-2


The effect of transport services and ICTs on carbon dioxide emissions in South Africa

Attaining lower carbon dioxide pollution levels is therefore crucial to success of the sustainable development targets. South Africa is one of the leading countries in ICT and transport infrastructure in the sub-Saharan African region. Opposing claims regarding how ICT and tranport services influence carbon dioxide pollution exist. The report explores the role that ICTs and the transportation industry play in South Africa's carbon dioxide pollution. According to regression analysis of results from the 1989-19-to-2013 period, smartphone adoption, internet use, and smartphone use raises carbon dioxide emissions, although transportation services in the region help minimize carbon dioxide pollution.

Source link: https://doi.org/10.1007/s11356-022-22863-7


Electrochemical methods for carbon dioxide separations

CO_2 separation electrochemical techniques of CO_2 separation may be used to produce potentially cheap, low-energy, scalable carbon capture systems. An overview of the experimentation and analysis that is required for the study of electrochemical techniques for CO_2 separation gives an overview of the experiments and results that are required. One of the greatest challenges facing humanity is the build-up of carbon dioxide in the atmosphere. Addressing this issue by removing CO_2 from the atmosphere or minimizing point source emissions by the separation and concentration of CO_2 from these dilute sources requires cost savings in terms of traditional thermal and pressure swing methods. In recent years, electrochemical separation methods of CO_2 separation have drew increasing attention as potentially cost-effective, low-energy, scalable carbon capture technologies have gained increasing importance. This Primer focuses on ambient temperature methods such as pH swing and direct redox reactions, which use similar experimental setups.

Source link: https://doi.org/10.1038/s43586-022-00148-0


Symmetric and asymmetric impacts of the palm oil industry on carbon dioxide emissions in Malaysia based on linear and nonlinear autoregressive distributed lag models

The palm oil sustainability contribution is inconsistent and incompatible with the three pillars of growth, production, and the climate, which have sparked concerns about the palm oil status quo. Some findings are based on increased environmental Kuznets curve -based studies on the linear effect of agriculture on carbon dioxide are not well investigated; however, nonlinear interactions between the palm oil industry and CO_2 are not investigated, and the postulating literature is incomplete. Based on time series data for Malaysia from 1978 to 2018, this research seeks to investigate palm oil production's symmetric and asymmetric impacts on CO_2 emissions. The novelty of this study lies in the asymmetric nonlinear autoregressive distributed lag model, which shows that increasing palm oil production reduces CO_2 in the long run, although reducing palm oil production raises emissions.

Source link: https://doi.org/10.1007/s10098-022-02395-x


Analysis and optimization of energy flow in the full chain of carbon dioxide capture and oil recovery

The energy use for the CCUS system is optimized by optimization. From an energy budget standpoint, the benefits of the WAG method are outlined. The procedure of injecting CO_2 into existing oil fields is a well-known enhanced oil recovery method. While achieving carbon sequestration, using CO_2 as a working fluid to recover oil will account for the energy consumption of the capture and transport processes, increasing the possibility of CO_2 capture while still achieving carbon sequestration. A full-chain energy consumption estimation software is developed, and an energy consumption analysis is carried out. From an energy budget standpoint, the oil displacement reuse's energy budget is deconstructed, and the benefits of the water alternating gas method are clarified. The benefits of CO_2-EOR are much greater than those of other CCUS processes, according to the report, and CCUS-EOR is a CO_2 utilization tool with positive energy savings.

Source link: https://doi.org/10.1007/s43979-022-00031-7

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions