فهرست مقالات gas separation

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  1 - Advance polymeric membrane to CO2 separation
  Samaneh Bandehali Abdolreza Moghadassi
  Global CO2 emissions have increased steadily due to use of fossil fuels and industrial applications. Therefore, it is necessary to decrease of energy consumption and CO2 concentration by CO2 separation from natural gas. There are different technologies to CO2 separation چکیده کامل

  Global CO2 emissions have increased steadily due to use of fossil fuels and industrial applications. Therefore, it is necessary to decrease of energy consumption and CO2 concentration by CO2 separation from natural gas. There are different technologies to CO2 separation. CO2 separation membranes prepared by green, simple, and efficient methods have faced great challenges. In recent years, Polymer based membrane materials be applied in vast variety of the membrane materials. Polymeric membrane materials show high permeability to CO2. But having excellent selectivity should be considering preparing polymeric membranes. This review summarizes advances in polymeric materials having very high CO2 permeability and excellent CO2/N2 selectivity that enhance the performance of polymeric membranes. Five important classes of polymer membrane materials are highlighted: polyimides, thermally rearranged polymers (TRs), substituted polyacetylenes, polymers with intrinsic microporosity (PIM) and poly (ethylene oxide) (PEO) that are high performance to CO2 separation. پرونده مقاله
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  2 - The Effect of Multi-Walled Carbon Nanotubes on CO2/N2 Separation Using Sulfonated Polyether Ether Ketone/Polyetherimide Nano Composite Membrane
  Habibollah Bahreini Elham Ameri Hassan Ebadi-Dehaghani
  Membrane technology has attracted significant research attention due to its many advantages in gas separation. In the present study, Blended membranes were fabricated utilizing sulfonated poly (ether ether ketone) (SPEEK) and poly (etherimide) (PEI) with varying quantit چکیده کامل

  Membrane technology has attracted significant research attention due to its many advantages in gas separation. In the present study, Blended membranes were fabricated utilizing sulfonated poly (ether ether ketone) (SPEEK) and poly (etherimide) (PEI) with varying quantities of multi-wall carbon nanotubes (MWCNTs) (up to 2 wt.%). The membranes produced were analyzed using X-ray diffraction (XRD), scanning field emission electron microscopy (FESEM), and Fourier transformed infrared spectroscopy (FTIR). The impact of the SPEEK/PEI composition on membrane selectivity was examined at various feed pressures ranging from 2 to 8 bar. The selectivity and gas permeability values varied between the individual polymers and showed systematic fluctuations with changes in the SPEEK/PEI content in the blends. The incorporation of MWCNTs into the blend resulted in an enhancement of the CO2/ N2 selectivity. The membrane containing the same amount of SPEEK and PEI, along with 1 wt.% of MWCNTs (designated as SP55M1), exhibited an approximately 22% increase in the selectivity of CO2/N2 compared to the pristine membrane. پرونده مقاله
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  3 - COUPLING MODEL FOR MULTI-COMPONENT GAS PERMEATION PROCESS
  A. Hussain A. Qayyum
  A gas permeation model (Coupling Model) has been developed which has the flexibility to be used for different membrane module configurations. The aim of this work is to predict the performance of a single stage gas separation process using membranes and provide a compre چکیده کامل

  A gas permeation model (Coupling Model) has been developed which has the flexibility to be used for different membrane module configurations. The aim of this work is to predict the performance of a single stage gas separation process using membranes and provide a comprehensive description of process parameters like flow rates, composition, stage cut and stream pressure. The significant feature of this work is the development of computational technique which combines the counter-current flow mode with co-current flow mode. In contrary to other counter-current models (reported in literature), the model reported in this work (Coupling Model) does not require initial conditions to start and also it is independent of any adjustment technique like shooting method. This model is based on real membrane operation and works by the coupling of co-current and counter-current methods. After each iteration, output values of co-current mode become the input values for counter-current mode. This model has the capability to take upto nine components, whereas model reported in literature can handle 4-5 components in a gas mixture to be separated. The results obtained are validated with the published data and will be discussed to elaborate the operation of a gas separation membrane. پرونده مقاله