scholarly journals Experimental Research on Carbon Dioxide Inhibiting the Process of Coal-oxygen Adsorption

2012 ◽  
Vol 43 ◽  
pp. 221-225 ◽  
Author(s):  
Gao Yu-kun ◽  
Zhang Ying-hua ◽  
Huang Zhi-an ◽  
Hu Chun-li ◽  
Huang Men-yu
Keyword(s):  
Carbon Dioxide ◽  
Experimental Research ◽  
Oxygen Adsorption

scholarly journals Climate Change and Refrigerants: Thermodynamic Properties of Low-GWP Fluids for Domestic Applications and Binary Systems for Low-Temperature Options

2020 ◽  
Vol 10 (6) ◽  
pp. 2014 ◽  
Author(s):  
Mariano Pierantozzi ◽  
Sebastiano Tomassetti ◽  
Giovanni Di Nicola
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Global Warming ◽  
Low Temperature ◽  
Thermodynamic Properties ◽  
Experimental Research ◽  
Binary Systems ◽  
Research Activity ◽  
Greenhouse Gasses ◽  
Low Global Warming Potential

The most commonly used refrigerants are potent greenhouse gasses that can contribute to climate change. Hydro-Fluoro-Olefins are low Global Warming Potential fluids. A summary of our experimental research activity on the thermodynamic properties of two environmentally friendly Hydro-Fluoro-Olefins, namely R1234yf and R1234ze(E), is reported. In particular, the measurements were performed with an isochoric apparatus and the apparatus specifically built to reach temperatures down to about 100 K. The data elaboration confirms the validity of the choice and that R1234yf and R1234ze(E) can be adopted in many domestic applications. Moreover, considering the reduction of the flammability issues of R1234yf and R1234ze(E), the properties of binary systems containing these fluids and carbon dioxide were analyzed. The presented mixtures could be very interesting for low-temperature applications such as cascade cycles.

Experimental research on inerting characteristics of carbon dioxide used for fire extinguishment in a large sealed space

2020 ◽  
Vol 142 ◽  
pp. 174-190 ◽  
Author(s):  
Liang Ge ◽  
Yimin Shao ◽  
Yinjun Wang ◽  
Guangxun Zhang ◽  
Zujing Zhang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Experimental Research ◽  
Fire Extinguishment

scholarly journals Efektivitas Ekstraksi Tanaman Lidah Mertua dan Sereh Dalam Mereduksi Kadar Co Dalam Ruangan

2021 ◽  
Vol 20 (2) ◽  
pp. 128-136
Author(s):  
Rizky Rahadian Wicaksono ◽  
Eko Sulistiono
Keyword(s):  
Carbon Dioxide ◽  
Air Pollution ◽  
Urban Environment ◽  
Experimental Research ◽  
Ornamental Plant ◽  
The Other ◽  
Toxic Substances ◽  
Pollution Levels ◽  
Lemon Grass ◽  
Post Test

Pendahuluan: Lidah mertua (Sansevieria trifasciata) dan sereh (Cymbopogon citrates)  merupakan tanaman yang memiliki banyak manfaat. Banyak orang telah memanfaatkan tanaman ini sebagai tanaman hias di rumah. Disisi lain, tanaman ini memberikan manfaat yang luar biasa dalam mengurangi kadar polusi udara. Zat beracun karbondioksida, benzene, formaldehyde, trichloroethylene, mampu di serap oleh tanaman ini. Lingkungan perkotaan kaya sekali akan zat pencemar, sehingga penelitian ini dilakuan. Adapun tujuan dari penelitian ini adalah untuk mengetahui kemampuan tanaman lidah mertua dan sereh dalam menyerap kadar CO asap rokok ruangan.Metode: Metode yang digunakan dalam penelitian ini merupakan true eksperimental dengan desain pretest dan postest. Penelitian ini dilakukan dengan prosedur pengeringan tanaman mengunakan oven pengering selama 24 jam dan 48 jam dengan suhu 60 oC. Dilakukan dengan dua kali pengulangan 2,5 dan 5 gram. Data dianalisis secara deskriptif kuantitatif.Hasil: Ekstrak tanaman lidah mertua (Sansevieria trifasciata) dan sereh (Cymbopogon citrates) dengan pengovenan 48 jam lebih baik dalam penyerapan CO ruangan yang disebabkan oleh asap rokok dibandingkan dengan pengovenan selama 24 jamSimpulan: Penelitian ini menghasilkan bahwa ekstraksi lidah mertua dan sereh dapat menyerap kadar CO ruangan secara maksimal pada pengeringan 48 jam. ABSTRACT Tittle: The efectifity extraction of Sansevieria trifasciata and Cymbopogon citrates to reduce in door CO levelIntroduction: Snake plant (Sansevieria trifasciata) and lemon grass (Cymbopogon citrates have many benefits. Many people have used this plant as an ornamental plant inside home. On the other hand, this plant provides tremendous benefits in reducing air pollution levels. Toxic substances carbon dioxide, benzene, formaldehyde, trichlorethylene, can be absorbed by this plant. The urban environment is very rich in pollutants, so this research was carried out. The purpose of this study was to determine the ability of the in-laws and lemongrass tongue plants to absorb CO levels in indoor cigarette smoke.Methods: The method used in this research was the experimental research with pre-test and post-test designs. This research was conducted by drying the plants using a drying oven for 24 hours and 48 hours with a temperature of 60 oC. Performed in two repetitions of 2.5 and 5 grams.Results: The results of the extraction were exposed in a room treated with cigarette smoke with repetitions of 5, 10, 15, 20, 25 and 30 minutes. Room CO levels were measured using a CO meter.Conclusion: This study shows that the snake plants and lemon grass extract can absorb room CO levels maximally at 48 hours of drying.

scholarly journals Experimental research of reagent capsulation process at various methods of carbon dioxide supply

2021 ◽  
Vol 1791 (1) ◽  
pp. 012120
Author(s):  
L O Shtripling ◽  
E G Kholkin ◽  
Yu V Kalinin ◽  
V V Merkulov
Keyword(s):  
Carbon Dioxide ◽  
Experimental Research

scholarly journals Researches on plant respiration. II.―Variations in the respiratory quotient during germination of seeds with different food reserves

1933 ◽  
Vol 113 (784) ◽  
pp. 405-428 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Respiratory Quotient ◽  
Respiratory Activity ◽  
Oxygen Adsorption ◽  
Carbon Dioxide Evolution ◽  
Food Reserves ◽  
Plant Respiration ◽  
Germinating Seeds ◽  
True Measure

Determinations of respiratory activity in plants have nearly always been made by measuring the rate of carbon dioxide evolution by the tissues. Much less frequently the rate of oxygen adsorption has been used as a measure of the process. In comparatively few researches have determinations been made of both carbon dioxide evolution and oxygen adsorption. Yet it is clear that a true measure of respiratory activity can only be given by one or other of these quantities alone, it they bear a fixed numerical relation to one another; where this is not so, it is obvious that at least one of these quantities cannot be taken as a measure of respiration, and it may not always easy in such cases to decide which of them is to be regarded as giving the truer value of this process. Indeed, a determination of both carbon dioxide output and oxygen adsorption by respiring tissues seems eminently desirable as providing data allied should assist in the elucidation of the mechanism of the respiratory process. In the work described in this paper, which deals with the course of respiratory activity of plants of a number of species during germination of the seeds and the early development of the seedling, we have accordingly determined not only the rate of carbon dioxide evolution, but the rate of oxygen adsorption. Such determinations appear to be the more desirable as the existing information on the respiratory quotient of germinating seeds is scanty, and such data as have been recorded are highly contradictory.

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