Amine is one of candidate solvents that can be used for CO2 recovery from the flue gas by conventional chemical absorption/desorption process. In this work, we analyzed the impact of different amine absorbents and their concentrations, the absorber and stripper column heights and the operating conditions on the cost of CO2 recovery plant for post-combustion CO2 removal. For each amine solvent, ...

An optical absorption sensor for gas chromatography (GC) is presented. It consists of a quantum cascade laser along with a long piece of Hollow Waveguide for Infrared (HWIR) transmission inserted into the GC line. It measures the infrared absorption in each individual gas peak after separation by the GC column, and maintains the shapes of gas peaks after the HWIR sensor, making the gas samples ...

9-Hydrazinoacridine irreversibly labeled pig plasma amine oxidase by covalent attachment to the active carbonyl cofactor. The visible absorption spectrum of the modified protein displays new absorption bands at 495 and 525 nm. Its emission spectrum exhibited maxima at 415 and 440 nm. In addition, both absorption and emission spectra were insensitive to pH changes between 6 and 10. Phase modulat...

BACKGROUND Adequate operation interspace is the premise of laparoscopy, and carbon dioxide (CO2) was an ideal gas for forming lacuna. A retroperitoneal space is used to form operation interspace in retroperitoneal laparoscopic radical nephrectomy by making ballooning, and the retroperitoneal space has no relative complete and airtight serous membrane, therefore CO2 absorption may be greater in ...

In this work, CO2 capture by post-combustion using MEA is considered. The mechanistic model for the absorption process is elaborated and includes specie and energy balances for the liquid and gas phases. Model predictive control is implemented as a control strategy for the absorption column.

Accurate global measurements of tropospheric CO2 mixing ratios are needed to better understand the global carbon cycle and the CO2 exchange between land, oceans and atmosphere. NASA Goddard Space Flight Center (GSFC) is developing a pulsed lidar approach for an integrated path differential absorption (IPDA) lidar as a candidate for the NASA’s planned ASCENDS mission to allow global measurements...

Mo2O5 2+-ZSM-5 (Mo/Alf = 0.4, Si/Alf = 20) samples prepared by sublimation of MoO3 were carburized in CH4 to form MoCx clusters active in CH4 pyrolysis and then exposed to different CO2/CH4 mixtures. CO2/CH4 reactant ratios between 0 and 0.1 increased catalyst stability but decreased pyrolysis rates, and ratios above 0.1 led to a sudden loss of activity that was reversed after removal of CO2. B...

Basing on results of previous studies, the efficiency of a Brayton/Hirn combined cycle, fuelled with a clean syngas produced by means of biomass gasification and equipped with CO2 removal by chemical absorption, resulted 33.94%, considering also the separated CO2 compression process. The specific CO2 emission of the power plant was 178 kg/MWh. In comparison with values previously found for an I...

Highly efficient CO2 absorption was realized through formation of zwitterionic adducts, combining synthetic strategies to ionic liquids (ILs) and coordination. The essence of our strategy is to make use of multidentate cation coordination between Li(+) and an organic base. Also PEG-functionalized organic bases were employed to enhance the CO2-philicity. The ILs were reacted with CO2 to form the...

In the Nuon/Vattenfall CO2 Catch-up project, a pre-combustion CO2 capture pilot plant was built and operated at the Buggenum IGCC power plant, the Netherlands. The pilot consist of sweet water-gas shift, physical CO2 absorption and CO2 compression. The technology performance was verified and validated models were obtained. This paper describes the validation of a WGS reactor model and the excel...