Search results

1

High Pressure Vapour-Liquid Equilibrium of Volatiles in Supercritical Carbon Dioxide

100%

Gurgenova K., Bogeł-Łukasik R., Wawrzyniak P.

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vol. 34

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issue 3

387-392

EN

Binary vapour-liquid equilibrium of thymoquinone and carbon dioxide at the isothermal conditions was carried out at temperature 323.15 K and pressures from 6 to 10 MPa. The experimental data were fitted to the Soave-Redlich-Kwong equation of state. Results could be used for selection of process parameters in separation of volatiles from raw oil or for evaluation of existing separation technologies.

2

Influence of humidity on carbon dioxide adsorption on zeolite 13X

88%

Zabielska K., Aleksandrzak T., Gabruś E., Zabielska K., Aleksandrzak T., Gabruś E.

Chemical and Process Engineering

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2020

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vol. 41

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issue 3

3

High Pressure Vapour-Liquid Equilibrium of Volatiles in Supercritical Carbon Dioxide

88%

Gurgenova K., Bogeł-Łukasik R., Wawrzyniak P.

Chemical and Process Engineering

|

2013

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issue 3

4

The Analysis of Pipeline Transportation Process for CO2Captured From Reference Coal-Fired 900 MW Power Plant to Sequestration Region

88%

Witkowski A., Rusin A., Majkut M., Stolecka K.

Chemical and Process Engineering

|

2014

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vol. 35

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issue 4

497-514

EN

Three commercially available intercooled compression strategies for compressing CO2 were studied. All of the compression concepts required a final delivery pressure of 153 bar at the inlet to the pipeline. Then, simulations were used to determine the maximum safe pipeline distance to subsequent booster stations as a function of inlet pressure, environmental temperature, thickness of the thermal insulation and ground level heat flux conditions. The results show that subcooled liquid transport increases energy efficiency and minimises the cost of CO2 transport over long distances under heat transfer conditions. The study also found that the thermal insulation layer should not be laid on the external surface of the pipe in atmospheric conditions in Poland. The most important problems from the environmental protection point of view are rigorous and robust hazard identification which indirectly affects CO2 transportation. This paper analyses ways of reducing transport risk by means of safety valves.

5

Carbon Dioxide Absorption into Aqueous Blends of N-Methyldiethanolamine and 2-Ethylaminoethanol

88%

Moniuk W., Pohorecki R., Machniewski P.

Chemical and Process Engineering

|

2012

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vol. 33

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issue 4

547-561

EN

Measurements of the absorption rate of carbon dioxide into aqueous solutions of N-methyldiethanoloamine (MDEA) and 2-ethylaminoethanol (EAE) have been carried out. On this basis a mathematical model of the performance of an absorption column operated with aqueous solution of a blend of the above amines at elevated temperatures and pressures have been proposed. The results of simulations obtained by means of this model are described. The work is a part of a wider program, aimed at the development of a new process.

6

Adsorption equilibrium of carbon dioxide on zeolite 13X at high pressures

88%

Zabielska K., Aleksandrzak T., Gabruś E.

Chemical and Process Engineering

|

2018

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vol. 39

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issue 3

7

Amine activators of CO2 absorption in industrial conditions

88%

Bińczak G., Pohorecki R., Moniuk W., Możeński C., Bińczak G., Pohorecki R., Moniuk W., Możeński C.

Chemical and Process Engineering

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2019

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vol. 40

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issue 2

8

Carbon dioxide removal from MEA - water solution on PDMS tubular membrane

88%

Krupiczka R., Rotkegel A., Ziobrowski Z.

Chemical and Process Engineering

|

2011

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vol. 32

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issue 4

281-290

EN

The process of carbon dioxide removal from monoethanolamine (MEA) - water solution was investigated on Poly Di Methyl Siloxane (PDMS) hydrophobic tubular membrane with a ceramic support. The effects of feed temperature, liquid flow rate and MEA concentration on CO2 mass transfer and selectivity were examined and found to be with a reasonable deviation (±25%) with predictions based on the multilayer film model. The membrane resistance was evaluated in separate experiments. The measured CO2 mass fluxes (0.17-0.45 kg/(m2h)) were found to be independent of the MEA concentration in the feed.

9

CFD Modelling of CO2 Capture in a Packed Bed by Chemical Absorption

88%

Asendrych D., Niegodajew P., Drobniak S.

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vol. 34

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issue 2

269-282

EN

The paper deals with numerical modelling of carbon dioxide capture by amine solvent from flue gases in post-combustion technology. A complex flow system including a countercurrent two-phase flow in a porous region, chemical reaction and heat transfer is considered to resolve CO2 absorption. In order to approach the hydrodynamics of the process a two-fluid Eulerian model was applied. At the present stage of model development only the first part of the cycle, i.e. CO2 absorption was included. A series of parametric simulations has shown that carbon dioxide capture efficiency is mostly influenced by the ratio of liquid (aqueous amine solution) to gas (flue gases) mass fluxes. Good consistency of numerical results with experimental data acquired at a small-scale laboratory CO2 capture installation (at the Institute for Chemical Processing of Coal, Zabrze, Poland) has proved the reliability of the model.

10

Direct synthesis of dimethyl carbonate and propylene glycol using potassium bicarbonate as catalyst in supercritical CO2

88%

Wen Y., Zhang R., Cang Y., Zhang J., Liu L., Guo X., Fan B.

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EN

The improved one-pot synthesis of dimethyl carbonate and propylene glycol from propylene oxide, supercritical carbon dioxide, and methanol with potassium bicarbonate as the catalyst has been reported in this paper. As far as we know, it is the first time to use potassium bicarbonate only as the catalyst in the production process which is simple and cheap. Satisfactory conversion rate of propylene oxide and yield of the products could be achieved at the optimized conditions with quite a small amount of by-products. Our new method offers an attractive choice for the production of dimethyl carbonate in large-scale industry efficiently and environmental friendly.

11

A Study on the Synthesis of Lithium Carbonate (Li2CO3) from Waste Acidic Sludge

88%

Choi D. H., Wang J. P., Choi D. H., Wang J. P.

|

12

Effect Of Urban Traffic On The Immission Of Carbon Dioxide In The University Campus

75%

Cichowicz R., Wielgosiński G.

Ecological Chemistry and Engineering S

|

2015

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vol. 22

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issue 2

189-200

EN

The condition and quality of atmospheric air plays a very important role in the life of every living organism, including man. Every day we breathe atmospheric air containing CO2 whose level changes depending both on many external factors and physicochemical processes. The concentration of carbon dioxide in the air changes, among other things, due to the influence of communication routes which may adversely affect the environment. For this reason it is necessary to analyze changes in CO2 concentrations and try to determine their impact on the functioning of users of the area (so, one can observe and analyze seasonal impact of communication routes on separate sub-areas of research).

13

The Influence of a Ventilation on the Level of Carbon Dioxide in a Classroom at a Higher University / Wpływ Wentylacji Na Poziom Ditlenku Węgla W Pomieszczeniu Uczelni Wyższej

75%

Cichowicz R., Sabiniak H., Wielgosińsk G.

Ecological Chemistry and Engineering S

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2015

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vol. 22

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issue 1

61-71

EN

Carbon dioxide can affect on human mood and working conditions in closed area. Knowledge about the level of air pollutants concentration in the room, should be a guideline to design a properly working ventilation system. For years carbon dioxide, appearing during human breathing, was not taken into consideration as a factor determining the process of ventilation systems design. At present the assessment of air quality in closed rooms is performed on the basis of measurement of concentration of carbon dioxide metabolically produced by humans that can be referred to the so-called hygienic minimum, eg the upper limit of CO2 concentration equal to 1000 ppm (0.1%).

PL

Ditlenek węgla może znacząco wpływać na samopoczucie oraz jakość pracy osób przebywających w pomieszczeniach zamkniętych. Znajomość poziomu koncentracji zanieczyszczeń powietrza w danym pomieszczeniu powinna być wytyczną do projektowania właściwie funkcjonującego systemu wentylacyjnego. Przez wiele lat ditlenek węgla, powstający w trakcie oddychania człowieka, nie był uwzględniany jako czynnik determinujący proces projektowania systemów wentylacyjnych. Obecnie ocenę jakości powietrza w pomieszczeniach zamkniętych wykonuje się w oparciu o pomiar stężenia ditlenku węgla wytwarzanego metabolicznie przez człowieka, który można odnieść do tzw. minimum higienicznego, czyli górnej granicy stężenia CO2 równej 1000 ppm (0,1%).

14

Analysis of pipeline transportation systems for carbon dioxide sequestration

75%

Witkowski A., Majkut M., Rulik S.

Archives of Thermodynamics

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2014

|

issue 1

15

The Analysis of Pipeline Transportation Process for CO2 Captured From Reference Coal-Fired 900 MW Power Plant to Sequestration Region

75%

Majkut M., Witkowski A., Rusin A., Stolecka K.

Chemical and Process Engineering

|

2014

|

issue 4

16

Impact on Greenhouse Effect of the Heat Flow of the Earth Surface

75%

Uda C. N., Philips A. I., Clement H. N., Orede O. M., Aliegu H. F.

World News of Natural Sciences

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2024

|

vol. 53

32-48

EN

Climate change due to enhanced greenhouse effect arising as a result of human activities is considered a major global environmental threat to mankind. This study experimentally investigates and determines the heat flow in and out of the earth surface, and the impact of greenhouse effect on the heat transfer. A high voltage electric bulb was placed between two bottles; an empty bottle containing only air and the other bottle containing a mixture of baking soda and vinegar, evolving CO2. We observed that the vinegar and baking soda in the filled bottle reacted and produced carbon dioxide (CO2). This CO2 absorbs and retains more heat from the high voltage bulb than the empty bottle of normal air. We also observed that visible light passes through the glass and is absorbed by darker surfaces inside. The demonstration of this study proves that greenhouse gases like CO2 is one of major greenhouse gases that are responsible for global warming by trapping heat thereby giving a rapid rise in temperature over time because of the concomitant lower heat loss to its environment.

17

Carbon Dioxide Absorption into Aqueous Blends of N-Methyldiethanolamine and 2-Ethylaminoethanol

75%

Pohorecki R., Moniuk W., Machniewski P.

Chemical and Process Engineering

|

2012

|

issue 4

18

Carbon dioxide removal from MEA - water solution on PDMS tubular membrane

75%

Krupiczka R., Rotkegel A., Ziobrowski Z.

Chemical and Process Engineering

|

2011

|

issue 4

19

CFD Modelling of CO2 Capture in a Packed Bed by Chemical Absorption

75%

Dariusz Asendrych D., Niegodajew P., Drobniak S.

Chemical and Process Engineering

|

2013

|

issue 2

20

Prediction of flow boiling heat transfer coefficient for carbon dioxide in minichannels and conventional channels

75%

Mikielewicz D., Jakubowska B.

Archives of Thermodynamics

|

2016

|

issue 2

Refine search results

High Pressure Vapour-Liquid Equilibrium of Volatiles in Supercritical Carbon Dioxide

Influence of humidity on carbon dioxide adsorption on zeolite 13X

High Pressure Vapour-Liquid Equilibrium of Volatiles in Supercritical Carbon Dioxide

The Analysis of Pipeline Transportation Process for CO2Captured From Reference Coal-Fired 900 MW Power Plant to Sequestration Region

Carbon Dioxide Absorption into Aqueous Blends of N-Methyldiethanolamine and 2-Ethylaminoethanol

Adsorption equilibrium of carbon dioxide on zeolite 13X at high pressures

Amine activators of CO2 absorption in industrial conditions

Carbon dioxide removal from MEA - water solution on PDMS tubular membrane

CFD Modelling of CO2 Capture in a Packed Bed by Chemical Absorption

Direct synthesis of dimethyl carbonate and propylene glycol using potassium bicarbonate as catalyst in supercritical CO2

A Study on the Synthesis of Lithium Carbonate (Li2CO3) from Waste Acidic Sludge

Effect Of Urban Traffic On The Immission Of Carbon Dioxide In The University Campus

The Influence of a Ventilation on the Level of Carbon Dioxide in a Classroom at a Higher University / Wpływ Wentylacji Na Poziom Ditlenku Węgla W Pomieszczeniu Uczelni Wyższej

Analysis of pipeline transportation systems for carbon dioxide sequestration

The Analysis of Pipeline Transportation Process for CO2 Captured From Reference Coal-Fired 900 MW Power Plant to Sequestration Region

Impact on Greenhouse Effect of the Heat Flow of the Earth Surface

Carbon Dioxide Absorption into Aqueous Blends of N-Methyldiethanolamine and 2-Ethylaminoethanol

Carbon dioxide removal from MEA - water solution on PDMS tubular membrane

CFD Modelling of CO2 Capture in a Packed Bed by Chemical Absorption

Prediction of flow boiling heat transfer coefficient for carbon dioxide in minichannels and conventional channels