the main objective of this paper is to examine the effect of nanomaterials on mass transfer coefficient in bubble type absorption of carbon dioxide by experiment. the absorption process is carried out in a bubble column and in room temperature. mass transfer coefficient, saturated concentration of co2, and gas holdup are determined in this system. the kinds of nanomaterials, the concentrations ...

Reducing CO2 emission and lowering the concentration of greenhouse gases in the atmosphere has quickly become one of the most urgent environmental issues. While a variety of technologies and methods have been developed, the separation of CO2 from gas streams is still a critical issue. Apart from establishing new techniques, the exploration of membrane materials with high separation performance ...

The Cryogenic Carbon CaptureTM (CCC) process is a retrofit, post-combustion technology that desublimates CO2 in the flue gas, separates the resulting solid from the remaining light gases, pressurizes the solid CO2, melts the CO2 and warms the light gas, and completes the CO2 pressurization with liquid CO2. This skid-scale CCC system has demonstrated successful carbon capture of 90–99% from simu...

Three infrared CO2 analyzers were tested for the effect of background gases: the Ametek CD-3A (Ametek, Thermox Instruments Division, Pittsburgh, PA), the Dräger Multiwarn P CO2 (Dräger, L ubeck, Germany), and the Servomex 1440 (Servomex, Crowborough, East Sussex, UK). Various CO2 concentrations were prepared with Wösthoff precision pumps (H. Wösthoff, Bochum, Germany). Calibration with a differ...

The removal of CO2 through chemical absorption in a bench-scale spray dryer absorber was investigated experimentally using the lime slurry as absorbent. The effect of important operating parameters on CO2 removal efficiency has been investigated; in selected ranges of operating parameters, increasing gas inlet temperature and absorbent concentration lead to permanent efficiency decline, increas...

We present an advanced new sensor, the Greenhouse Gas Monitor (GGM), which will revolutionize the global measurement of greenhouse gas levels. The GGM is an ideal compact, passive instrument for deployment on future-generation small LEO satellites. The Kyoto summit on greenhouse gas and carbon emissions has demonstrated the urgent need for accurate, global monitoring of a range of greenhouse ga...

Abstract. A possible way to reduce the size and complexity of common gas chromatography (GC) systems is economization column temperature regulation system. To this end, a compensation method was developed validated on benchtop GC-PDD (pulsed discharge detector) with ethene. An in-house-developed algorithm correlates retention index test previously selected reference gas. investigate further met...

This study tested the growth of three algal species (Chlorella sp., Synechocystis sp. PCC 6803, and Tetraselmis suecica) using flue gas (generated by natural gas combustion). All the cultures showed poor biomass growth if they were exposed to continuous flue gas. To optimize the flue gas utilization in algal photo-bioreactors, we performed both model simulations and experimental analysis. First...

The gas sensing properties of resistive gas sensors of BaFe0.7Ta0.3O3−δ (BFT30) prepared by the socalled aerosol deposition method, a method to manufacture dense ceramic films at room temperature, were investigated. The electrical response of the films was investigated first under various oxygen concentrations and in a wide temperature range between 350 and 900 C. Between 700 and 900 C, the con...