In Situ Observation of Carbon Dioxide Capture on Pseudo-Liquid Eutectic Mixture-Promoted Magnesium Oxide

2018 ◽  
Vol 10 (3) ◽  
pp. 2414-2422 ◽  
Author(s):  
Hanyeong Lee ◽  
Monica Louise T. Triviño ◽  
Soonha Hwang ◽  
Sung Hyun Kwon ◽  
Seung Geol Lee ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Magnesium Oxide ◽  
Carbon Dioxide Capture ◽  
Eutectic Mixture ◽  
In Situ Observation

scholarly journals In situ observation of atmospheric oxygen and carbon dioxide in the North Pacific using a cargo ship

2018 ◽  
Vol 18 (13) ◽  
pp. 9283-9295 ◽  
Author(s):  
Yu Hoshina ◽  
Yasunori Tohjima ◽  
Keiichi Katsumata ◽  
Toshinobu Machida ◽  
Shin-ichiro Nakaoka
Keyword(s):  
Carbon Dioxide ◽  
Mole Fraction ◽  
North Pacific ◽  
Atmospheric Oxygen ◽  
The United States ◽  
In Situ Observation ◽  
Airflow Rate ◽  
The North ◽  
The North Pacific

Abstract. Atmospheric oxygen (O2) and carbon dioxide (CO2) variations in the North Pacific were measured aboard a cargo ship, the New Century 2 (NC2), while it cruised between Japan and the United States between December 2015 and November 2016. A fuel cell analyzer and a nondispersive infrared analyzer were used for the measurement of O2 and CO2, respectively. To achieve parts-per-million precision for the O2 measurements, we precisely controlled the flow rates of the sample and reference air introduced into the analyzers and the outlet pressure. A relatively low airflow rate (10 cm3 min−1) was adopted to reduce the consumption rate of the reference gases. In the laboratory, the system achieved measurement precisions of 3.8 per meg for δ(O2 ∕ N2), which is commonly used to express atmospheric O2 variation, and 0.1 ppm for the CO2 mole fraction. After the in situ observation started aboard NC2, we found that the ship's motion caused false wavy variations in the O2 signal with an amplitude of more than several tens of ppm and a period of about 20 s. Although we have not resolved the problem at this stage, hourly averaging considerably suppressed the variation associated with ship motion. Comparison between the in situ observation and flask sampling of air samples aboard NC2 showed that the averaged differences (in situ–flask) and the standard deviations (±1σ) are −2.8 ± 9.4 per meg for δ(O2 ∕ N2) and −0.02 ± 0.33 ppm for the CO2 mole fraction. We compared 1 year of in situ data for atmospheric potential oxygen (APO; O2 +1.1×CO2) obtained from the broad middle-latitude region (140∘ E–130∘ W, 29∘ N–45∘ N) with previous flask sampling data from the North Pacific. This comparison showed that longitudinal differences in the seasonal amplitude of APO, ranging from 51 to 73 per meg, were smaller than the latitudinal differences.

Evaluation of the formation and carbon dioxide capture by Li4SiO4 using in situ synchrotron powder X-ray diffraction studies

2018 ◽  
Vol 20 (41) ◽  
pp. 26570-26579 ◽  
Author(s):  
M. L. Grasso ◽  
M. V. Blanco ◽  
F. Cova ◽  
J. A. González ◽  
P. Arneodo Larochette ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Capture ◽  
Shell Formation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Formation Pathway ◽  
Capture Capacity

The formation pathway of Li4SiO4 involves Li2SiO3 as an intermediate. Carbonation of Li4SiO4 under dynamical conditions retards the double shell formation, improving CO2 capture capacity.

In situ nitrogen enriched carbon for carbon dioxide capture

Carbon ◽  
2010 ◽  
Vol 48 (2) ◽  
pp. 396-402 ◽  
Author(s):  
Jayshri A. Thote ◽  
Kartik S. Iyer ◽  
Ravikrishna Chatti ◽  
Nitin K. Labhsetwar ◽  
Rajesh B. Biniwale ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Capture

scholarly journals In situ observation of atmospheric oxygen and carbon dioxide in the North Pacific using a cargo ship

2018 ◽  
Author(s):  
Yu Hoshina ◽  
Yasunori Tohjima ◽  
Keiichi Katsumata ◽  
Toshinobu Machida ◽  
Shin-ichiro Nakaoka
Keyword(s):  
Carbon Dioxide ◽  
North Pacific ◽  
Atmospheric Oxygen ◽  
The United States ◽  
In Situ Observation ◽  
Airflow Rate ◽  
Mixing Ratio ◽  
The North ◽  
The North Pacific

Abstract. Atmospheric oxygen (O2) and carbon dioxide (CO2) mixing ratios in the North Pacific were observed onboard a cargo ship, the New Century 2 (NC2), while it cruised between Japan and the United States between December 2015 and November 2016. A fuel cell analyzer and a non-dispersive infrared analyzer were used for measurement of O2 and CO2, respectively. To achieve parts-per-million precision for the O2 measurements, we precisely controlled the flow rates of the sample and reference air introduced into the analyzers and the outlet pressure. A relatively low airflow rate (10 cm3 min−1) was adopted to reduce the consumption rate of the reference gases. In the laboratory, the system achieved measurement precisions of 3.8 per meg for the O2 / N2 ratio, which is commonly used to express atmospheric O2 variation, and 0.1 ppm for the CO2 mixing ratio. After the in situ observation started onboard NC2, we found that the ship's motion caused false wavy variations of the O2 signal with an amplitude of more than several tens of ppm and a period of about 20 s. Although we have not resolved the problem at this stage, hourly averaging considerably suppressed the variation associated with ship motion. Comparison between the in situ observation and flask sampling of air samples onboard NC2 showed that the averaged differences (in situ – flask) and the standard deviations (±1σ) are −2.1 ± 9.2 per meg for the O2 / N2 ratio and −0.02 ± 0.33 ppm for the CO2 mixing ratio. We compared the 1 yr of in situ data for atmospheric potential oxygen (APO) (= O2 + 1.1 × CO2) obtained from the broad middle-latitudes region (140° E–130° W, 29° N–45° N) with previous flask sampling data from the North Pacific. This comparison showed that longitudinal differences in the seasonal amplitude of APO, ranging from 51 to 73 per meg, were smaller than the latitudinal differences.

Zirconia incorporated calcium looping absorbents with superior sintering resistance for carbon dioxide capture from in situ or ex situ processes

2018 ◽  
Vol 2 (12) ◽  
pp. 2733-2741 ◽  
Author(s):  
Ming Zhao ◽  
Xu He ◽  
Guozhao Ji ◽  
Yinqiang Song ◽  
Xiao Zhao
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Capture ◽  
Ex Situ ◽  
Calcium Looping ◽  
Sintering Resistance

Zirconia incorporation greatly enhances the sintering resistance of CaO.

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