CAPTURING GREENHOUSE GAS CARBON DIOXIDE TO FORM CARBONATE COMPOUNDS

2015 ◽  
Vol 77 (33) ◽  
Author(s):  
Wan Nor Roslam Wan Isahak ◽  
Zatil Amali Che Ramli ◽  
Wan Zurina Samad ◽  
Mohd Ambar Yarmo
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Co2 Capture ◽  
Cuo Nanoparticles ◽  
Mgo Nanoparticles ◽  
Efficient Transformation ◽  
Oxide Hydroxide ◽  
Co2 Chemisorption ◽  
Xrd And Tem ◽  
Hydroxide Phase

The application of CuO and MgO nanoparticles in CO2 capture was evaluated experimentally using 5% CO2 in nitrogen via physisorption and chemisorption instrumentation. The structural and surface micrograph of the CuO and MgO nanoparticles were characterized by XRD and TEM, respectively. After CO2 capture by the CuO nanoparticles, the amounts of oxide, hydroxide, and carbonate phases in the adsorbents were determined by XPS measurements. No hydroxide phase was detected in the MgO nanoparticles because of the efficient transformation of MgO into MgCO3. Monolayer adsorptions of CO2 were shown to occur in the MgO nanoparticles with a total chemisorption of 5.0 mmol/g. After the fifth cycle, only 3% reduction of the CO2 chemisorption was reported because of some agglomeration by sintering during desorption.

scholarly journals Process Simulations and Experimental Studies of CO2 Capture

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 544
Author(s):  
José Ramón Fernández
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Co2 Capture ◽  
Experimental Studies ◽  
Process Simulations ◽  
Global Emissions

Carbon dioxide, whose global emissions into the atmosphere have reached a maximum of about 36 billion tons per year (compared to the 6 billion tons emitted in 1950), is considered by far the main greenhouse gas (GHG) [...]

scholarly journals Ionic Liquids for CO2 Capture and Reduction

2021 ◽  
Vol 7 (1) ◽  
pp. 6
Author(s):  
Małgorzata E. Zakrzewska
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Greenhouse Gas ◽  
Co2 Capture ◽  
Thematic Issue ◽  
Valuable Compounds

As pointed out in the description of this thematic issue of C, with the current atmospheric levels of carbon dioxide being above 400 ppm, there is a growing interest in recycling this greenhouse gas in the form of valuable compounds [...]

scholarly journals Developing Eco-Friendly and Cost-Effective Porous Adsorbent for Carbon Dioxide Capture

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1962
Author(s):  
Mahboubeh Nabavinia ◽  
Baishali Kanjilal ◽  
Noahiro Fujinuma ◽  
Amos Mugweru ◽  
Iman Noshadi
Keyword(s):  
Carbon Dioxide ◽  
Surface Area ◽  
Co2 Capture ◽  
High Surface ◽  
Scale Up ◽  
Polymer Networks ◽  
High Surface Area ◽  
Excellent Thermal Stability ◽  
Doped Polymers ◽  
Metal Doped

To address the issue of global warming and climate change issues, recent research efforts have highlighted opportunities for capturing and electrochemically converting carbon dioxide (CO2). Despite metal doped polymers receiving widespread attention in this respect, the structures hitherto reported lack in ease of synthesis with scale up feasibility. In this study, a series of mesoporous metal-doped polymers (MRFs) with tunable metal functionality and hierarchical porosity were successfully synthesized using a one-step copolymerization of resorcinol and formaldehyde with Polyethyleneimine (PEI) under solvothermal conditions. The effect of PEI and metal doping concentrations were observed on physical properties and adsorption results. The results confirmed the role of PEI on the mesoporosity of the polymer networks and high surface area in addition to enhanced CO2 capture capacity. The resulting Cobalt doped material shows excellent thermal stability and promising CO2 capture performance, with equilibrium adsorption of 2.3 mmol CO2/g at 0 °C and 1 bar for at a surface area 675.62 m2/g. This mesoporous polymer, with its ease of synthesis is a promising candidate for promising for CO2 capture and possible subsequent electrochemical conversion.

scholarly journals Greenhouse gas emissions from the water–air interface of a grassland river: a case study of the Xilin River

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xue Hao ◽  
Yu Ruihong ◽  
Zhang Zhuangzhuang ◽  
Qi Zhen ◽  
Lu Xixi ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Land Use ◽  
Nitrous Oxide ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Ghg Emissions ◽  
Nitrous Oxide Emissions ◽  
Gas Emissions ◽  
Sand Land ◽  
Very High

AbstractGreenhouse gas (GHG) emissions from rivers and lakes have been shown to significantly contribute to global carbon and nitrogen cycling. In spatiotemporal-variable and human-impacted rivers in the grassland region, simultaneous carbon dioxide, methane and nitrous oxide emissions and their relationships under the different land use types are poorly documented. This research estimated greenhouse gas (CO2, CH4, N2O) emissions in the Xilin River of Inner Mongolia of China using direct measurements from 18 field campaigns under seven land use type (such as swamp, sand land, grassland, pond, reservoir, lake, waste water) conducted in 2018. The results showed that CO2 emissions were higher in June and August, mainly affected by pH and DO. Emissions of CH4 and N2O were higher in October, which were influenced by TN and TP. According to global warming potential, CO2 emissions accounted for 63.35% of the three GHG emissions, and CH4 and N2O emissions accounted for 35.98% and 0.66% in the Xilin river, respectively. Under the influence of different degrees of human-impact, the amount of CO2 emissions in the sand land type was very high, however, CH4 emissions and N2O emissions were very high in the artificial pond and the wastewater, respectively. For natural river, the greenhouse gas emissions from the reservoir and sand land were both low. The Xilin river was observed to be a source of carbon dioxide and methane, and the lake was a sink for nitrous oxide.

Energy and Exergy Analyses of a Power Plant With Carbon Dioxide Capture Using Multistage Chemical Looping Combustion

2016 ◽  
Vol 139 (3) ◽  
Author(s):  
Bilal Hassan ◽  
Oghare Victor Ogidiama ◽  
Mohammed N. Khan ◽  
Tariq Shamim
Keyword(s):  
Carbon Dioxide ◽  
Power Plant ◽  
Natural Gas ◽  
Co2 Capture ◽  
Power Plants ◽  
Waste Heat ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Operating Pressure ◽  
Efficiency Gain

A thermodynamic model and parametric analysis of a natural gas-fired power plant with carbon dioxide (CO2) capture using multistage chemical looping combustion (CLC) are presented. CLC is an innovative concept and an attractive option to capture CO2 with a significantly lower energy penalty than other carbon-capture technologies. The principal idea behind CLC is to split the combustion process into two separate steps (redox reactions) carried out in two separate reactors: an oxidation reaction and a reduction reaction, by introducing a suitable metal oxide which acts as an oxygen carrier (OC) that circulates between the two reactors. In this study, an Aspen Plus model was developed by employing the conservation of mass and energy for all components of the CLC system. In the analysis, equilibrium-based thermodynamic reactions with no OC deactivation were considered. The model was employed to investigate the effect of various key operating parameters such as air, fuel, and OC mass flow rates, operating pressure, and waste heat recovery on the performance of a natural gas-fired power plant with multistage CLC. The results of these parameters on the plant's thermal and exergetic efficiencies are presented. Based on the lower heating value, the analysis shows a thermal efficiency gain of more than 6 percentage points for CLC-integrated natural gas power plants compared to similar power plants with pre- or post-combustion CO2 capture technologies.

scholarly journals The growing season greenhouse gas balance of a continental tundra site in the Indigirka lowlands, NE Siberia

2007 ◽  
Vol 4 (6) ◽  
pp. 985-1003 ◽  
Author(s):  
M. K. van der Molen ◽  
J. van Huissteden ◽  
F. J. W. Parmentier ◽  
A. M. R. Petrescu ◽  
A. J. Dolman ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Soil Temperature ◽  
Greenhouse Gas ◽  
Growing Season ◽  
Light Limitation ◽  
Greenhouse Gas Balance ◽  
Area Index ◽  
North East ◽  
Methane Fluxes ◽  
Gas Balance

Abstract. Carbon dioxide and methane fluxes were measured at a tundra site near Chokurdakh, in the lowlands of the Indigirka river in north-east Siberia. This site is one of the few stations on Russian tundra and it is different from most other tundra flux stations in its continentality. A suite of methods was applied to determine the fluxes of NEE, GPP, Reco and methane, including eddy covariance, chambers and leaf cuvettes. Net carbon dioxide fluxes were high compared with other tundra sites, with NEE=−92 g C m−2 yr−1, which is composed of an Reco=+141 g C m−2 yr−1 and GPP=−232 g C m−2 yr−1. This large carbon dioxide sink may be explained by the continental climate, that is reflected in low winter soil temperatures (−14°C), reducing the respiration rates, and short, relatively warm summers, stimulating high photosynthesis rates. Interannual variability in GPP was dominated by the frequency of light limitation (Rg<200 W m−2), whereas Reco depends most directly on soil temperature and time in the growing season, which serves as a proxy of the combined effects of active layer depth, leaf area index, soil moisture and substrate availability. The methane flux, in units of global warming potential, was +28 g C-CO2e m−2 yr−1, so that the greenhouse gas balance was −64 g C-CO2e m−2 yr−1. Methane fluxes depended only slightly on soil temperature and were highly sensitive to hydrological conditions and vegetation composition.

The role of carbon dioxide in climate forcing from 1979 to 2004: introduction of the Annual Greenhouse Gas Index

Tellus B ◽  
2006 ◽  
Vol 58 (5) ◽  
pp. 614-619 ◽  
Author(s):  
D. J. Hofmann ◽  
J. H. Butler ◽  
E. J. Dlugokencky ◽  
J. W. Elkins ◽  
K. Masarie ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas ◽  
Climate Forcing

Design of a Synthetic Enzyme Cascade for the in vitro Fixation of a C1 Carbon Source to a Functional C4 Sugar

2021 ◽  
Author(s):  
Samed Güner ◽  
Vanessa Wegat ◽  
André Pick ◽  
Volker Sieber
Keyword(s):  
Carbon Dioxide ◽  
Carbon Source ◽  
Greenhouse Gas ◽  
Value Added ◽  
Waste Stream ◽  
Enzyme Cascade ◽  
Sustainable Future ◽  
Value Added Products

Realizing a sustainable future requires intensifying the waste stream conversion, such as converting the greenhouse gas carbon dioxide into value-added products. In this paper, we focus on utilizing formaldehyde as...

Cross-linked, Porous Imidazolium-based Poly(Ionic Liquid)s for CO2 Capture and Utilisation

2021 ◽  
Author(s):  
Alaa F. Eftaiha ◽  
Abdussalam K. Qaroush ◽  
Areej K. Hasan ◽  
Khaleel I. Assaf ◽  
Feda'a Al-Qaisi ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Global Warming ◽  
Greenhouse Gas ◽  
Co2 Capture ◽  
The World ◽  
Poly Ionic Liquid

CO2 is the most influential greenhouse gas with its drastic effects all over the world. Meanwhile, global warming is considered as a hot topic to different slices of scientists dealing...

Nitrogen-rich hierarchically porous polyaniline-based adsorbents for carbon dioxide (CO2) capture

2019 ◽  
Vol 360 ◽  
pp. 1199-1212 ◽  
Author(s):  
Edith Mawunya Kutorglo ◽  
Fatima Hassouna ◽  
Anna Beltzung ◽  
Dušan Kopecký ◽  
Ivona Sedlářová ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Co2 Capture ◽  
Hierarchically Porous ◽  
Carbon Dioxide Co2
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